chore(deps): bump kotlin from 2.4.10 to 2.4.20 in /samples/simple-streamable-server (#996)

Bumps `kotlin` from 2.4.10 to 2.4.20.
Updates `org.jetbrains.kotlin.jvm` from 2.4.10 to 2.4.20
<details>
<summary>Release notes</summary>
<p><em>Sourced from <a
href="https://github.com/JetBrains/kotlin/releases">org.jetbrains.kotlin.jvm's
releases</a>.</em></p>
<blockquote>
<h2>Kotlin 2.4.20</h2>
<h2>Changelog</h2>
<h3>Analysis API</h3>
<ul>
<li><a
href="https://youtrack.jetbrains.com/issue/KT-86546"><code>KT-86546</code></a>
Check suspicious when over ConeKotlinType in
ConeTypeCompatibilityChecker</li>
<li><a
href="https://youtrack.jetbrains.com/issue/KT-85418"><code>KT-85418</code></a>
Implement an API for accessing deserialized file annotations in Analysis
API</li>
<li><a
href="https://youtrack.jetbrains.com/issue/KT-74448"><code>KT-74448</code></a>
K2. False positive MISSING_DEPENDENCY_SUPERCLASS in LinkedListTest.kt,
kotlinx.coroutines</li>
<li><a
href="https://youtrack.jetbrains.com/issue/KT-85856"><code>KT-85856</code></a>
containingSymbol of constructor property differs for local and non-local
classes</li>
<li><a
href="https://youtrack.jetbrains.com/issue/KT-65417"><code>KT-65417</code></a>
K2 IDE: KTOR false positive expect-actual matching error on enum class
because of implicit clone() in non-JVM source sets</li>
</ul>
<h3>Analysis API. Code Compilation</h3>
<ul>
<li><a
href="https://youtrack.jetbrains.com/issue/KT-76457"><code>KT-76457</code></a>
K2 IDE / KMP Debugger: KISEWA “Cannot compile a common source without a
JVM counterpart” on evaluating inline fun from common module inside
jvm</li>
</ul>
<h3>Analysis API. FIR</h3>
<ul>
<li><a
href="https://youtrack.jetbrains.com/issue/KT-70552"><code>KT-70552</code></a>
No expects for actual</li>
<li><a
href="https://youtrack.jetbrains.com/issue/KT-69727"><code>KT-69727</code></a>
K2 IDE. Wrong error in the editor on calling <code>clone</code> function
of actual enum instance in non-jvm platform</li>
<li><a
href="https://youtrack.jetbrains.com/issue/KT-69726"><code>KT-69726</code></a>
FP errors on declaring <code>fun clone()</code> in actual enum in
not-jvm source-set</li>
<li><a
href="https://youtrack.jetbrains.com/issue/KT-86014"><code>KT-86014</code></a>
Types are broken after remove parameter through change signature</li>
<li><a
href="https://youtrack.jetbrains.com/issue/KT-86363"><code>KT-86363</code></a>
KotlinIllegalArgumentExceptionWithAttachments: No dangling modifier
found on companion blocks</li>
<li><a
href="https://youtrack.jetbrains.com/issue/KT-86147"><code>KT-86147</code></a>
Drop <code>kotlin.parallel.resolve.under.global.lock</code> registry
key</li>
<li><a
href="https://youtrack.jetbrains.com/issue/KT-85543"><code>KT-85543</code></a>
Avoid lazy resolve for the contracts phase if no constracts might be
resolved</li>
</ul>
<h3>Analysis API. Infrastructure</h3>
<ul>
<li><a
href="https://youtrack.jetbrains.com/issue/KT-84914"><code>KT-84914</code></a>
Do not publish analysis-api-test-framework</li>
<li><a
href="https://youtrack.jetbrains.com/issue/KT-86986"><code>KT-86986</code></a>
<code>kotlin-compiler-common-for-ide</code> bundles unrelated Analysis
API modules</li>
<li><a
href="https://youtrack.jetbrains.com/issue/KT-86186"><code>KT-86186</code></a>
Analysis API: Codebase tests run twice in some analysis modules — pick a
single JUnit runner and migrate</li>
<li><a
href="https://youtrack.jetbrains.com/issue/KT-85360"><code>KT-85360</code></a>
Drop kotlin-compiler-testdata-for-ide artifact</li>
<li><a
href="https://youtrack.jetbrains.com/issue/KT-85585"><code>KT-85585</code></a>
Simplify the dependencies graph for the Analysis API modules</li>
<li><a
href="https://youtrack.jetbrains.com/issue/KT-85381"><code>KT-85381</code></a>
Remove tests for the FE10 implementation</li>
</ul>
<h3>Analysis API. Light Classes</h3>
<h4>New Features</h4>
<ul>
<li><a
href="https://youtrack.jetbrains.com/issue/KT-84645"><code>KT-84645</code></a>
Support resolving to companion block members &amp; extensions from Java
(light classes)</li>
<li><a
href="https://youtrack.jetbrains.com/issue/KT-80775"><code>KT-80775</code></a>
Support PsiClass#getRecordComponents in light classes</li>
</ul>
<h4>Fixes</h4>
<ul>
<li><a
href="https://youtrack.jetbrains.com/issue/KT-57537"><code>KT-57537</code></a>
SLC: propagate default parameter value from (<code>@JvmOverloads</code>)
<code>expect</code> declarations to <code>actual</code>
declarations</li>
<li><a
href="https://youtrack.jetbrains.com/issue/KT-85040"><code>KT-85040</code></a>
[Analysis API] Improve Java / Kotlin interop in KMP projects</li>
<li><a
href="https://youtrack.jetbrains.com/issue/KT-87301"><code>KT-87301</code></a>
SymbolLightAccessorMethod#isValid returns false for delegated
properties</li>
<li><a
href="https://youtrack.jetbrains.com/issue/KT-87171"><code>KT-87171</code></a>
SLC: non-mapped Kotlin collection supertype is dropped from supertype
list</li>
<li><a
href="https://youtrack.jetbrains.com/issue/KT-87250"><code>KT-87250</code></a>
JvmExposeBoxed: light classes shouldn't be autogenerated for private
declarations</li>
<li><a
href="https://youtrack.jetbrains.com/issue/KT-70428"><code>KT-70428</code></a>
AA: good code is red when a Java class extends a Kotlin class
implementing MutableList by delegation</li>
<li><a
href="https://youtrack.jetbrains.com/issue/KT-63568"><code>KT-63568</code></a>
Symbol Light Classes:
KtAnnotationApplicationWithArgumentsInfo.normalizedArguments() may work
incorrectly when psi is not set</li>
</ul>
<!-- raw HTML omitted -->
</blockquote>
<p>... (truncated)</p>
</details>
<details>
<summary>Changelog</summary>
<p><em>Sourced from <a
href="https://github.com/JetBrains/kotlin/blob/master/ChangeLog.md">org.jetbrains.kotlin.jvm's
changelog</a>.</em></p>
<blockquote>
<h2>2.4.20</h2>
<h3>Analysis API</h3>
<ul>
<li><a
href="https://youtrack.jetbrains.com/issue/KT-86546"><code>KT-86546</code></a>
Check suspicious when over ConeKotlinType in
ConeTypeCompatibilityChecker</li>
<li><a
href="https://youtrack.jetbrains.com/issue/KT-85418"><code>KT-85418</code></a>
Implement an API for accessing deserialized file annotations in Analysis
API</li>
<li><a
href="https://youtrack.jetbrains.com/issue/KT-74448"><code>KT-74448</code></a>
K2. False positive MISSING_DEPENDENCY_SUPERCLASS in LinkedListTest.kt,
kotlinx.coroutines</li>
<li><a
href="https://youtrack.jetbrains.com/issue/KT-85856"><code>KT-85856</code></a>
containingSymbol of constructor property differs for local and non-local
classes</li>
<li><a
href="https://youtrack.jetbrains.com/issue/KT-65417"><code>KT-65417</code></a>
K2 IDE: KTOR false positive expect-actual matching error on enum class
because of implicit clone() in non-JVM source sets</li>
</ul>
<h3>Analysis API. Code Compilation</h3>
<ul>
<li><a
href="https://youtrack.jetbrains.com/issue/KT-76457"><code>KT-76457</code></a>
K2 IDE / KMP Debugger: KISEWA “Cannot compile a common source without a
JVM counterpart” on evaluating inline fun from common module inside
jvm</li>
</ul>
<h3>Analysis API. FIR</h3>
<ul>
<li><a
href="https://youtrack.jetbrains.com/issue/KT-70552"><code>KT-70552</code></a>
No expects for actual</li>
<li><a
href="https://youtrack.jetbrains.com/issue/KT-69727"><code>KT-69727</code></a>
K2 IDE. Wrong error in the editor on calling <code>clone</code> function
of actual enum instance in non-jvm platform</li>
<li><a
href="https://youtrack.jetbrains.com/issue/KT-69726"><code>KT-69726</code></a>
FP errors on declaring <code>fun clone()</code> in actual enum in
not-jvm source-set</li>
<li><a
href="https://youtrack.jetbrains.com/issue/KT-86014"><code>KT-86014</code></a>
Types are broken after remove parameter through change signature</li>
<li><a
href="https://youtrack.jetbrains.com/issue/KT-86363"><code>KT-86363</code></a>
KotlinIllegalArgumentExceptionWithAttachments: No dangling modifier
found on companion blocks</li>
<li><a
href="https://youtrack.jetbrains.com/issue/KT-86147"><code>KT-86147</code></a>
Drop <code>kotlin.parallel.resolve.under.global.lock</code> registry
key</li>
<li><a
href="https://youtrack.jetbrains.com/issue/KT-85543"><code>KT-85543</code></a>
Avoid lazy resolve for the contracts phase if no constracts might be
resolved</li>
</ul>
<h3>Analysis API. Infrastructure</h3>
<ul>
<li><a
href="https://youtrack.jetbrains.com/issue/KT-84914"><code>KT-84914</code></a>
Do not publish analysis-api-test-framework</li>
<li><a
href="https://youtrack.jetbrains.com/issue/KT-86986"><code>KT-86986</code></a>
<code>kotlin-compiler-common-for-ide</code> bundles unrelated Analysis
API modules</li>
<li><a
href="https://youtrack.jetbrains.com/issue/KT-86186"><code>KT-86186</code></a>
Analysis API: Codebase tests run twice in some analysis modules — pick a
single JUnit runner and migrate</li>
<li><a
href="https://youtrack.jetbrains.com/issue/KT-85360"><code>KT-85360</code></a>
Drop kotlin-compiler-testdata-for-ide artifact</li>
<li><a
href="https://youtrack.jetbrains.com/issue/KT-85585"><code>KT-85585</code></a>
Simplify the dependencies graph for the Analysis API modules</li>
<li><a
href="https://youtrack.jetbrains.com/issue/KT-85381"><code>KT-85381</code></a>
Remove tests for the FE10 implementation</li>
</ul>
<h3>Analysis API. Light Classes</h3>
<h4>New Features</h4>
<ul>
<li><a
href="https://youtrack.jetbrains.com/issue/KT-84645"><code>KT-84645</code></a>
Support resolving to companion block members &amp; extensions from Java
(light classes)</li>
<li><a
href="https://youtrack.jetbrains.com/issue/KT-80775"><code>KT-80775</code></a>
Support PsiClass#getRecordComponents in light classes</li>
</ul>
<h4>Fixes</h4>
<ul>
<li><a
href="https://youtrack.jetbrains.com/issue/KT-57537"><code>KT-57537</code></a>
SLC: propagate default parameter value from (<code>@JvmOverloads</code>)
<code>expect</code> declarations to <code>actual</code>
declarations</li>
<li><a
href="https://youtrack.jetbrains.com/issue/KT-85040"><code>KT-85040</code></a>
[Analysis API] Improve Java / Kotlin interop in KMP projects</li>
<li><a
href="https://youtrack.jetbrains.com/issue/KT-87301"><code>KT-87301</code></a>
SymbolLightAccessorMethod#isValid returns false for delegated
properties</li>
<li><a
href="https://youtrack.jetbrains.com/issue/KT-87171"><code>KT-87171</code></a>
SLC: non-mapped Kotlin collection supertype is dropped from supertype
list</li>
<li><a
href="https://youtrack.jetbrains.com/issue/KT-87250"><code>KT-87250</code></a>
JvmExposeBoxed: light classes shouldn't be autogenerated for private
declarations</li>
<li><a
href="https://youtrack.jetbrains.com/issue/KT-70428"><code>KT-70428</code></a>
AA: good code is red when a Java class extends a Kotlin class
implementing MutableList by delegation</li>
<li><a
href="https://youtrack.jetbrains.com/issue/KT-63568"><code>KT-63568</code></a>
Symbol Light Classes:
KtAnnotationApplicationWithArgumentsInfo.normalizedArguments() may work
incorrectly when psi is not set</li>
<li><a
href="https://youtrack.jetbrains.com/issue/KT-36740"><code>KT-36740</code></a>
MPP: False-positive incompatible types in .java when using expect-class
returned by non-expect member from common when actual is actual
typealias</li>
</ul>
<!-- raw HTML omitted -->
</blockquote>
<p>... (truncated)</p>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a
href="890ac1d94f"><code>890ac1d</code></a>
Add Changelog for 2.4.20-RC3</li>
<li><a
href="8860aed4ae"><code>8860aed</code></a>
🍒 [FIR] Fix suspend conversion when expected type is nullable (<a
href="https://redirect.github.com/JetBrains/kotlin/issues/7769">#7769</a>)</li>
<li><a
href="ab5bcd9428"><code>ab5bcd9</code></a>
Edit ChangeLog for 2.4.20-RC2</li>
<li><a
href="9464edc097"><code>9464edc</code></a>
Add ChangeLog for 2.4.20-RC2</li>
<li><a
href="0261e43b78"><code>0261e43</code></a>
Cherry-pick &quot;Fix <code>asBodyAndResultVar</code> call in
`visitInlinedLambdaInComposable...</li>
<li><a
href="0763513670"><code>0763513</code></a>
[box-tests] Workaround for klib compatibility tests (<a
href="https://redirect.github.com/JetBrains/kotlin/issues/7626">#7626</a>)</li>
<li><a
href="045aec6647"><code>045aec6</code></a>
[Wasm] Append scripts from webpack.config.d in the end of the file (<a
href="https://redirect.github.com/JetBrains/kotlin/issues/7615">#7615</a>)</li>
<li><a
href="cd7173bf0b"><code>cd7173b</code></a>
🍒 [2.4.20] [K/JS] Keep associated obj annotation only if getInstance
survives...</li>
<li><a
href="d36a2ffbcc"><code>d36a2ff</code></a>
CastsOptimizationPass: break aliases cycles (<a
href="https://redirect.github.com/JetBrains/kotlin/issues/7578">#7578</a>)</li>
<li><a
href="8664983b34"><code>8664983</code></a>
[CLI] Restore custom IC search scope creation</li>
<li>Additional commits viewable in <a
href="https://github.com/JetBrains/kotlin/compare/v2.4.10...v2.4.20">compare
view</a></li>
</ul>
</details>
<br />

Updates `org.jetbrains.kotlin.plugin.serialization` from 2.4.10 to
2.4.20
<details>
<summary>Release notes</summary>
<p><em>Sourced from <a
href="https://github.com/JetBrains/kotlin/releases">org.jetbrains.kotlin.plugin.serialization's
releases</a>.</em></p>
<blockquote>
<h2>Kotlin 2.4.20</h2>
<h2>Changelog</h2>
<h3>Analysis API</h3>
<ul>
<li><a
href="https://youtrack.jetbrains.com/issue/KT-86546"><code>KT-86546</code></a>
Check suspicious when over ConeKotlinType in
ConeTypeCompatibilityChecker</li>
<li><a
href="https://youtrack.jetbrains.com/issue/KT-85418"><code>KT-85418</code></a>
Implement an API for accessing deserialized file annotations in Analysis
API</li>
<li><a
href="https://youtrack.jetbrains.com/issue/KT-74448"><code>KT-74448</code></a>
K2. False positive MISSING_DEPENDENCY_SUPERCLASS in LinkedListTest.kt,
kotlinx.coroutines</li>
<li><a
href="https://youtrack.jetbrains.com/issue/KT-85856"><code>KT-85856</code></a>
containingSymbol of constructor property differs for local and non-local
classes</li>
<li><a
href="https://youtrack.jetbrains.com/issue/KT-65417"><code>KT-65417</code></a>
K2 IDE: KTOR false positive expect-actual matching error on enum class
because of implicit clone() in non-JVM source sets</li>
</ul>
<h3>Analysis API. Code Compilation</h3>
<ul>
<li><a
href="https://youtrack.jetbrains.com/issue/KT-76457"><code>KT-76457</code></a>
K2 IDE / KMP Debugger: KISEWA “Cannot compile a common source without a
JVM counterpart” on evaluating inline fun from common module inside
jvm</li>
</ul>
<h3>Analysis API. FIR</h3>
<ul>
<li><a
href="https://youtrack.jetbrains.com/issue/KT-70552"><code>KT-70552</code></a>
No expects for actual</li>
<li><a
href="https://youtrack.jetbrains.com/issue/KT-69727"><code>KT-69727</code></a>
K2 IDE. Wrong error in the editor on calling <code>clone</code> function
of actual enum instance in non-jvm platform</li>
<li><a
href="https://youtrack.jetbrains.com/issue/KT-69726"><code>KT-69726</code></a>
FP errors on declaring <code>fun clone()</code> in actual enum in
not-jvm source-set</li>
<li><a
href="https://youtrack.jetbrains.com/issue/KT-86014"><code>KT-86014</code></a>
Types are broken after remove parameter through change signature</li>
<li><a
href="https://youtrack.jetbrains.com/issue/KT-86363"><code>KT-86363</code></a>
KotlinIllegalArgumentExceptionWithAttachments: No dangling modifier
found on companion blocks</li>
<li><a
href="https://youtrack.jetbrains.com/issue/KT-86147"><code>KT-86147</code></a>
Drop <code>kotlin.parallel.resolve.under.global.lock</code> registry
key</li>
<li><a
href="https://youtrack.jetbrains.com/issue/KT-85543"><code>KT-85543</code></a>
Avoid lazy resolve for the contracts phase if no constracts might be
resolved</li>
</ul>
<h3>Analysis API. Infrastructure</h3>
<ul>
<li><a
href="https://youtrack.jetbrains.com/issue/KT-84914"><code>KT-84914</code></a>
Do not publish analysis-api-test-framework</li>
<li><a
href="https://youtrack.jetbrains.com/issue/KT-86986"><code>KT-86986</code></a>
<code>kotlin-compiler-common-for-ide</code> bundles unrelated Analysis
API modules</li>
<li><a
href="https://youtrack.jetbrains.com/issue/KT-86186"><code>KT-86186</code></a>
Analysis API: Codebase tests run twice in some analysis modules — pick a
single JUnit runner and migrate</li>
<li><a
href="https://youtrack.jetbrains.com/issue/KT-85360"><code>KT-85360</code></a>
Drop kotlin-compiler-testdata-for-ide artifact</li>
<li><a
href="https://youtrack.jetbrains.com/issue/KT-85585"><code>KT-85585</code></a>
Simplify the dependencies graph for the Analysis API modules</li>
<li><a
href="https://youtrack.jetbrains.com/issue/KT-85381"><code>KT-85381</code></a>
Remove tests for the FE10 implementation</li>
</ul>
<h3>Analysis API. Light Classes</h3>
<h4>New Features</h4>
<ul>
<li><a
href="https://youtrack.jetbrains.com/issue/KT-84645"><code>KT-84645</code></a>
Support resolving to companion block members &amp; extensions from Java
(light classes)</li>
<li><a
href="https://youtrack.jetbrains.com/issue/KT-80775"><code>KT-80775</code></a>
Support PsiClass#getRecordComponents in light classes</li>
</ul>
<h4>Fixes</h4>
<ul>
<li><a
href="https://youtrack.jetbrains.com/issue/KT-57537"><code>KT-57537</code></a>
SLC: propagate default parameter value from (<code>@JvmOverloads</code>)
<code>expect</code> declarations to <code>actual</code>
declarations</li>
<li><a
href="https://youtrack.jetbrains.com/issue/KT-85040"><code>KT-85040</code></a>
[Analysis API] Improve Java / Kotlin interop in KMP projects</li>
<li><a
href="https://youtrack.jetbrains.com/issue/KT-87301"><code>KT-87301</code></a>
SymbolLightAccessorMethod#isValid returns false for delegated
properties</li>
<li><a
href="https://youtrack.jetbrains.com/issue/KT-87171"><code>KT-87171</code></a>
SLC: non-mapped Kotlin collection supertype is dropped from supertype
list</li>
<li><a
href="https://youtrack.jetbrains.com/issue/KT-87250"><code>KT-87250</code></a>
JvmExposeBoxed: light classes shouldn't be autogenerated for private
declarations</li>
<li><a
href="https://youtrack.jetbrains.com/issue/KT-70428"><code>KT-70428</code></a>
AA: good code is red when a Java class extends a Kotlin class
implementing MutableList by delegation</li>
<li><a
href="https://youtrack.jetbrains.com/issue/KT-63568"><code>KT-63568</code></a>
Symbol Light Classes:
KtAnnotationApplicationWithArgumentsInfo.normalizedArguments() may work
incorrectly when psi is not set</li>
</ul>
<!-- raw HTML omitted -->
</blockquote>
<p>... (truncated)</p>
</details>
<details>
<summary>Changelog</summary>
<p><em>Sourced from <a
href="https://github.com/JetBrains/kotlin/blob/master/ChangeLog.md">org.jetbrains.kotlin.plugin.serialization's
changelog</a>.</em></p>
<blockquote>
<h2>2.4.20</h2>
<h3>Analysis API</h3>
<ul>
<li><a
href="https://youtrack.jetbrains.com/issue/KT-86546"><code>KT-86546</code></a>
Check suspicious when over ConeKotlinType in
ConeTypeCompatibilityChecker</li>
<li><a
href="https://youtrack.jetbrains.com/issue/KT-85418"><code>KT-85418</code></a>
Implement an API for accessing deserialized file annotations in Analysis
API</li>
<li><a
href="https://youtrack.jetbrains.com/issue/KT-74448"><code>KT-74448</code></a>
K2. False positive MISSING_DEPENDENCY_SUPERCLASS in LinkedListTest.kt,
kotlinx.coroutines</li>
<li><a
href="https://youtrack.jetbrains.com/issue/KT-85856"><code>KT-85856</code></a>
containingSymbol of constructor property differs for local and non-local
classes</li>
<li><a
href="https://youtrack.jetbrains.com/issue/KT-65417"><code>KT-65417</code></a>
K2 IDE: KTOR false positive expect-actual matching error on enum class
because of implicit clone() in non-JVM source sets</li>
</ul>
<h3>Analysis API. Code Compilation</h3>
<ul>
<li><a
href="https://youtrack.jetbrains.com/issue/KT-76457"><code>KT-76457</code></a>
K2 IDE / KMP Debugger: KISEWA “Cannot compile a common source without a
JVM counterpart” on evaluating inline fun from common module inside
jvm</li>
</ul>
<h3>Analysis API. FIR</h3>
<ul>
<li><a
href="https://youtrack.jetbrains.com/issue/KT-70552"><code>KT-70552</code></a>
No expects for actual</li>
<li><a
href="https://youtrack.jetbrains.com/issue/KT-69727"><code>KT-69727</code></a>
K2 IDE. Wrong error in the editor on calling <code>clone</code> function
of actual enum instance in non-jvm platform</li>
<li><a
href="https://youtrack.jetbrains.com/issue/KT-69726"><code>KT-69726</code></a>
FP errors on declaring <code>fun clone()</code> in actual enum in
not-jvm source-set</li>
<li><a
href="https://youtrack.jetbrains.com/issue/KT-86014"><code>KT-86014</code></a>
Types are broken after remove parameter through change signature</li>
<li><a
href="https://youtrack.jetbrains.com/issue/KT-86363"><code>KT-86363</code></a>
KotlinIllegalArgumentExceptionWithAttachments: No dangling modifier
found on companion blocks</li>
<li><a
href="https://youtrack.jetbrains.com/issue/KT-86147"><code>KT-86147</code></a>
Drop <code>kotlin.parallel.resolve.under.global.lock</code> registry
key</li>
<li><a
href="https://youtrack.jetbrains.com/issue/KT-85543"><code>KT-85543</code></a>
Avoid lazy resolve for the contracts phase if no constracts might be
resolved</li>
</ul>
<h3>Analysis API. Infrastructure</h3>
<ul>
<li><a
href="https://youtrack.jetbrains.com/issue/KT-84914"><code>KT-84914</code></a>
Do not publish analysis-api-test-framework</li>
<li><a
href="https://youtrack.jetbrains.com/issue/KT-86986"><code>KT-86986</code></a>
<code>kotlin-compiler-common-for-ide</code> bundles unrelated Analysis
API modules</li>
<li><a
href="https://youtrack.jetbrains.com/issue/KT-86186"><code>KT-86186</code></a>
Analysis API: Codebase tests run twice in some analysis modules — pick a
single JUnit runner and migrate</li>
<li><a
href="https://youtrack.jetbrains.com/issue/KT-85360"><code>KT-85360</code></a>
Drop kotlin-compiler-testdata-for-ide artifact</li>
<li><a
href="https://youtrack.jetbrains.com/issue/KT-85585"><code>KT-85585</code></a>
Simplify the dependencies graph for the Analysis API modules</li>
<li><a
href="https://youtrack.jetbrains.com/issue/KT-85381"><code>KT-85381</code></a>
Remove tests for the FE10 implementation</li>
</ul>
<h3>Analysis API. Light Classes</h3>
<h4>New Features</h4>
<ul>
<li><a
href="https://youtrack.jetbrains.com/issue/KT-84645"><code>KT-84645</code></a>
Support resolving to companion block members &amp; extensions from Java
(light classes)</li>
<li><a
href="https://youtrack.jetbrains.com/issue/KT-80775"><code>KT-80775</code></a>
Support PsiClass#getRecordComponents in light classes</li>
</ul>
<h4>Fixes</h4>
<ul>
<li><a
href="https://youtrack.jetbrains.com/issue/KT-57537"><code>KT-57537</code></a>
SLC: propagate default parameter value from (<code>@JvmOverloads</code>)
<code>expect</code> declarations to <code>actual</code>
declarations</li>
<li><a
href="https://youtrack.jetbrains.com/issue/KT-85040"><code>KT-85040</code></a>
[Analysis API] Improve Java / Kotlin interop in KMP projects</li>
<li><a
href="https://youtrack.jetbrains.com/issue/KT-87301"><code>KT-87301</code></a>
SymbolLightAccessorMethod#isValid returns false for delegated
properties</li>
<li><a
href="https://youtrack.jetbrains.com/issue/KT-87171"><code>KT-87171</code></a>
SLC: non-mapped Kotlin collection supertype is dropped from supertype
list</li>
<li><a
href="https://youtrack.jetbrains.com/issue/KT-87250"><code>KT-87250</code></a>
JvmExposeBoxed: light classes shouldn't be autogenerated for private
declarations</li>
<li><a
href="https://youtrack.jetbrains.com/issue/KT-70428"><code>KT-70428</code></a>
AA: good code is red when a Java class extends a Kotlin class
implementing MutableList by delegation</li>
<li><a
href="https://youtrack.jetbrains.com/issue/KT-63568"><code>KT-63568</code></a>
Symbol Light Classes:
KtAnnotationApplicationWithArgumentsInfo.normalizedArguments() may work
incorrectly when psi is not set</li>
<li><a
href="https://youtrack.jetbrains.com/issue/KT-36740"><code>KT-36740</code></a>
MPP: False-positive incompatible types in .java when using expect-class
returned by non-expect member from common when actual is actual
typealias</li>
</ul>
<!-- raw HTML omitted -->
</blockquote>
<p>... (truncated)</p>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a
href="890ac1d94f"><code>890ac1d</code></a>
Add Changelog for 2.4.20-RC3</li>
<li><a
href="8860aed4ae"><code>8860aed</code></a>
🍒 [FIR] Fix suspend conversion when expected type is nullable (<a
href="https://redirect.github.com/JetBrains/kotlin/issues/7769">#7769</a>)</li>
<li><a
href="ab5bcd9428"><code>ab5bcd9</code></a>
Edit ChangeLog for 2.4.20-RC2</li>
<li><a
href="9464edc097"><code>9464edc</code></a>
Add ChangeLog for 2.4.20-RC2</li>
<li><a
href="0261e43b78"><code>0261e43</code></a>
Cherry-pick &quot;Fix <code>asBodyAndResultVar</code> call in
`visitInlinedLambdaInComposable...</li>
<li><a
href="0763513670"><code>0763513</code></a>
[box-tests] Workaround for klib compatibility tests (<a
href="https://redirect.github.com/JetBrains/kotlin/issues/7626">#7626</a>)</li>
<li><a
href="045aec6647"><code>045aec6</code></a>
[Wasm] Append scripts from webpack.config.d in the end of the file (<a
href="https://redirect.github.com/JetBrains/kotlin/issues/7615">#7615</a>)</li>
<li><a
href="cd7173bf0b"><code>cd7173b</code></a>
🍒 [2.4.20] [K/JS] Keep associated obj annotation only if getInstance
survives...</li>
<li><a
href="d36a2ffbcc"><code>d36a2ff</code></a>
CastsOptimizationPass: break aliases cycles (<a
href="https://redirect.github.com/JetBrains/kotlin/issues/7578">#7578</a>)</li>
<li><a
href="8664983b34"><code>8664983</code></a>
[CLI] Restore custom IC search scope creation</li>
<li>Additional commits viewable in <a
href="https://github.com/JetBrains/kotlin/compare/v2.4.10...v2.4.20">compare
view</a></li>
</ul>
</details>
<br />

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

.github/workflows/apidocs.yaml

@@ -27,14 +27,14 @@ jobs:
       - uses: actions/checkout@v7
 
       - name: Set up JDK ${{ env.JAVA_VERSION }}
-        uses: actions/setup-java@v5
+        uses: actions/setup-java@v6
         with:
           java-version: ${{ env.JAVA_VERSION }}
           distribution: ${{ env.JAVA_DISTRIBUTION }}
           cache: gradle
 
       - name: Setup Gradle
-        uses: gradle/actions/setup-gradle@v6
+        uses: gradle/actions/setup-gradle@v6.3.0
 
       - name: Generate Dokka Site
         run: |-

.github/workflows/automations.yml

@@ -27,7 +27,7 @@ jobs:
     name: Mark/unmark stale PRs and issues
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/stale@v10
+    - uses: actions/stale@v11
       with:
         debug-only: ${{ env.DRY_RUN }}
         exempt-draft-pr: true
@@ -66,7 +66,7 @@ jobs:
     name: Close stale PRs and issues
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/stale@v10
+    - uses: actions/stale@v11
       with:
         debug-only: ${{ env.DRY_RUN }}
         only-labels: 'stale'

.github/workflows/build.yml

@@ -46,7 +46,7 @@ jobs:
       - uses: actions/checkout@v7
 
       - name: Set up JDK ${{ env.JAVA_VERSION }}
-        uses: actions/setup-java@v5
+        uses: actions/setup-java@v6
         with:
           java-version: ${{ env.JAVA_VERSION }}
           distribution: ${{ env.JAVA_DISTRIBUTION }}
@@ -63,7 +63,7 @@ jobs:
         run: npm ci
 
       - name: Setup Gradle
-        uses: gradle/actions/setup-gradle@v6
+        uses: gradle/actions/setup-gradle@v6.3.0
         with:
           validate-wrappers: true
           add-job-summary: 'always'
@@ -129,13 +129,13 @@ jobs:
       - uses: actions/checkout@v7
 
       - name: Set up JDK ${{ env.JAVA_VERSION }}
-        uses: actions/setup-java@v5
+        uses: actions/setup-java@v6
         with:
           java-version: ${{ env.JAVA_VERSION }}
           distribution: ${{ env.JAVA_DISTRIBUTION }}
 
       - name: Setup Gradle
-        uses: gradle/actions/setup-gradle@v6
+        uses: gradle/actions/setup-gradle@v6.3.0
         with:
           validate-wrappers: true
           add-job-summary: 'always'
@@ -171,13 +171,13 @@ jobs:
       - uses: actions/checkout@v7
 
       - name: Set up JDK ${{ env.JAVA_VERSION }}
-        uses: actions/setup-java@v5
+        uses: actions/setup-java@v6
         with:
           java-version: ${{ env.JAVA_VERSION }}
           distribution: ${{ env.JAVA_DISTRIBUTION }}
 
       - name: Setup Gradle
-        uses: gradle/actions/setup-gradle@v6
+        uses: gradle/actions/setup-gradle@v6.3.0
         with:
           add-job-summary: 'always'
           cache-read-only: true

.github/workflows/codeql.yml

@@ -28,19 +28,19 @@ jobs:
         uses: actions/checkout@v7
 
       - name: Set up JDK ${{ env.JAVA_VERSION }}
-        uses: actions/setup-java@v5
+        uses: actions/setup-java@v6
         with:
           distribution: ${{ env.JAVA_DISTRIBUTION }}
           java-version: ${{ env.JAVA_VERSION }}
 
       - name: Initialize CodeQL
-        uses: github/codeql-action/init@v4
+        uses: github/codeql-action/init@v4.38.0
         with:
           languages: java-kotlin
           build-mode: manual
 
       - name: Setup Gradle
-        uses: gradle/actions/setup-gradle@v6
+        uses: gradle/actions/setup-gradle@v6.3.0
         with:
           validate-wrappers: true
           cache-read-only: true
@@ -52,6 +52,6 @@ jobs:
             --no-daemon --rerun-tasks --stacktrace
 
       - name: Analyze
-        uses: github/codeql-action/analyze@v4
+        uses: github/codeql-action/analyze@v4.38.0
         with:
           category: '/language:java-kotlin'

.github/workflows/conformance.yml

@@ -28,13 +28,13 @@ jobs:
       - uses: actions/checkout@v7
 
       - name: Set up JDK
-        uses: actions/setup-java@v5
+        uses: actions/setup-java@v6
         with:
           java-version: ${{ env.JAVA_VERSION }}
           distribution: ${{ env.JAVA_DISTRIBUTION }}
 
       - name: Setup Gradle
-        uses: gradle/actions/setup-gradle@v6
+        uses: gradle/actions/setup-gradle@v6.3.0
         with:
           cache-read-only: ${{ github.ref != 'refs/heads/main' }}
 
@@ -79,13 +79,13 @@ jobs:
       - uses: actions/checkout@v7
 
       - name: Set up JDK
-        uses: actions/setup-java@v5
+        uses: actions/setup-java@v6
         with:
           java-version: ${{ env.JAVA_VERSION }}
           distribution: ${{ env.JAVA_DISTRIBUTION }}
 
       - name: Setup Gradle
-        uses: gradle/actions/setup-gradle@v6
+        uses: gradle/actions/setup-gradle@v6.3.0
         with:
           cache-read-only: ${{ github.ref != 'refs/heads/main' }}
 
@@ -110,13 +110,13 @@ jobs:
       - uses: actions/checkout@v7
 
       - name: Set up JDK
-        uses: actions/setup-java@v5
+        uses: actions/setup-java@v6
         with:
           java-version: ${{ env.JAVA_VERSION }}
           distribution: ${{ env.JAVA_DISTRIBUTION }}
 
       - name: Setup Gradle
-        uses: gradle/actions/setup-gradle@v6
+        uses: gradle/actions/setup-gradle@v6.3.0
         with:
           cache-read-only: ${{ github.ref != 'refs/heads/main' }}
 
@@ -149,13 +149,13 @@ jobs:
       - uses: actions/checkout@v7
 
       - name: Set up JDK
-        uses: actions/setup-java@v5
+        uses: actions/setup-java@v6
         with:
           java-version: ${{ env.JAVA_VERSION }}
           distribution: ${{ env.JAVA_DISTRIBUTION }}
 
       - name: Setup Gradle
-        uses: gradle/actions/setup-gradle@v6
+        uses: gradle/actions/setup-gradle@v6.3.0
         with:
           cache-read-only: ${{ github.ref != 'refs/heads/main' }}
 

.github/workflows/gradle-publish.yml

@@ -19,7 +19,7 @@ jobs:
     steps:
       - uses: actions/checkout@v7
       - name: Set up JDK 21
-        uses: actions/setup-java@v5
+        uses: actions/setup-java@v6
         with:
           java-version: '21'
           distribution: 'temurin'
@@ -30,7 +30,7 @@ jobs:
           node-version: '22' # increase only after https://github.com/nodejs/node/issues/56645 will be fixed
 
       - name: Setup Gradle
-        uses: gradle/actions/setup-gradle@v6
+        uses: gradle/actions/setup-gradle@v6.3.0
 
       - name: Check
         run: ./gradlew check --no-configuration-cache

.github/workflows/samples.yml

@@ -39,13 +39,13 @@ jobs:
       - uses: actions/checkout@v7
 
       - name: Set up JDK ${{ env.JAVA_VERSION }}
-        uses: actions/setup-java@v5
+        uses: actions/setup-java@v6
         with:
           java-version: ${{ env.JAVA_VERSION }}
           distribution: ${{ env.JAVA_DISTRIBUTION }}
 
       - name: Setup Gradle
-        uses: gradle/actions/setup-gradle@v6
+        uses: gradle/actions/setup-gradle@v6.3.0
         with:
           validate-wrappers: true
           add-job-summary: 'always'

gradle/libs.versions.toml

@@ -1,28 +1,28 @@
 [versions]
 # plugins version
 atomicfu = "0.33.0"
-binaryCompatibilityValidatorPlugin = "0.18.1"
-detekt = "2.0.0-alpha.5"
+binaryCompatibilityValidatorPlugin = "0.18.2"
+detekt = "2.0.0-alpha.6"
 dokka = "2.2.0"
-kotlin = "2.4.0"
+kotlin = "2.4.10"
 kover = "0.9.9"
 ktlint = "14.2.0"
 knit = "0.5.1"
 mavenPublish = "0.37.0"
-netty = "4.2.16.Final"
+netty = "4.2.18.Final"
 
 # libraries version
 awaitility = "4.3.0"
-collections-immutable = "0.5.1"
+collections-immutable = "0.5.2"
 coroutines = "1.11.0"
-kotest = "6.2.3"
+kotest = "6.2.5"
 kotlinx-io = "0.9.1"
-ktor = "3.5.1"
+ktor = "3.5.2"
 logging = "8.0.4"
 mockk = "1.14.11"
 serialization = "1.11.0"
-slf4j = "2.0.18"
-logback = "1.5.38"
+slf4j = "2.0.19"
+logback = "1.6.3"
 junit = "5.14.4"
 
 [libraries]

gradle/wrapper/gradle-wrapper.properties

@@ -1,6 +1,6 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-9.6.1-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-9.7.1-bin.zip
 networkTimeout=10000
 retries=0
 retryBackOffMs=500

integration-test/src/jvmTest/kotlin/io/modelcontextprotocol/kotlin/sdk/integration/kotlin/AbstractPromptIntegrationTest.kt

@@ -698,8 +698,8 @@ abstract class AbstractPromptIntegrationTest : KotlinTestBase() {
 
         val expectedMessage = "Prompt not found: non-existent-prompt"
 
-        withClue("Exception code should be INTERNAL_ERROR: -32603") {
-            exception.code shouldBe -32603
+        withClue("Exception code should be INVALID_PARAMS: ${RPCError.ErrorCode.INVALID_PARAMS}") {
+            exception.code shouldBe RPCError.ErrorCode.INVALID_PARAMS
         }
         withClue("Unexpected error message for non-existent prompt") {
             exception.message shouldBe expectedMessage

integration-test/src/jvmTest/typescript/package-lock.json

@@ -8,16 +8,16 @@
       "name": "mcp-typescript-test-sdk",
       "version": "1.0.0",
       "dependencies": {
-        "@modelcontextprotocol/sdk": "^1.29.0",
+        "@modelcontextprotocol/sdk": "^1.30.0",
         "express": "^5.2.1",
-        "zod": "^4.4.3"
+        "zod": "^4.6.2"
       },
       "devDependencies": {
         "@types/cors": "^2.8.19",
         "@types/express": "^5.0.6",
-        "@types/node": "^26.1.1",
+        "@types/node": "^26.5.1",
         "cors": "^2.8.6",
-        "tsx": "^4.23.1",
+        "tsx": "^4.23.13",
         "typescript": "^7.0.2"
       }
     },
@@ -464,24 +464,24 @@
       }
     },
     "node_modules/@hono/node-server": {
-      "version": "1.19.13",
-      "resolved": "https://registry.npmjs.org/@hono/node-server/-/node-server-1.19.13.tgz",
-      "integrity": "sha512-TsQLe4i2gvoTtrHje625ngThGBySOgSK3Xo2XRYOdqGN1teR8+I7vchQC46uLJi8OF62YTYA3AhSpumtkhsaKQ==",
+      "version": "2.1.0",
+      "resolved": "https://registry.npmjs.org/@hono/node-server/-/node-server-2.1.0.tgz",
+      "integrity": "sha512-XovyyCCnBzW+zKu+z/zq8hwNs4KOR5rEMAOxo2f40Q5xoOI37IMm6MIg2COOUtUApo0i6850MTBKH2u4QLGIqg==",
       "license": "MIT",
       "engines": {
-        "node": ">=18.14.1"
+        "node": ">=20"
       },
       "peerDependencies": {
         "hono": "^4"
       }
     },
     "node_modules/@modelcontextprotocol/sdk": {
-      "version": "1.29.0",
-      "resolved": "https://registry.npmjs.org/@modelcontextprotocol/sdk/-/sdk-1.29.0.tgz",
-      "integrity": "sha512-zo37mZA9hJWpULgkRpowewez1y6ML5GsXJPY8FI0tBBCd77HEvza4jDqRKOXgHNn867PVGCyTdzqpz0izu5ZjQ==",
+      "version": "1.30.0",
+      "resolved": "https://registry.npmjs.org/@modelcontextprotocol/sdk/-/sdk-1.30.0.tgz",
+      "integrity": "sha512-xKd8OIzlqNzcqcNumGAa6g+PW2kjD5vrpcKOnfldAUPP3j7lnqMPwlTXQm8gF+UwH72z0lqaRbjr9hqGz0eITA==",
       "license": "MIT",
       "dependencies": {
-        "@hono/node-server": "^1.19.9",
+        "@hono/node-server": "^1.19.9 || ^2.0.5",
         "ajv": "^8.17.1",
         "ajv-formats": "^3.0.1",
         "content-type": "^1.0.5",
@@ -579,13 +579,13 @@
       "license": "MIT"
     },
     "node_modules/@types/node": {
-      "version": "26.1.1",
-      "resolved": "https://registry.npmjs.org/@types/node/-/node-26.1.1.tgz",
-      "integrity": "sha512-nxAkRSVkN1Y0JC1W8ky/fTfkGsMmcrRsbx+3XoZE+rMOX71kLYTV7fLXpqud1GpbpP5TuffXFqfX7fH2GgZREw==",
+      "version": "26.5.1",
+      "resolved": "https://registry.npmjs.org/@types/node/-/node-26.5.1.tgz",
+      "integrity": "sha512-CzNm2FezW4VR/LjG6yUdiEgLE/rAQ9Slj5gCu/C2VrdcW7I0ahNZ8DRbHT7zOZ6r3ONgd/bsQIeSaoDGrd1C6g==",
       "dev": true,
       "license": "MIT",
       "dependencies": {
-        "undici-types": "~8.3.0"
+        "undici-types": "~8.9.0"
       }
     },
     "node_modules/@types/qs": {
@@ -1229,9 +1229,9 @@
       }
     },
     "node_modules/es-object-atoms": {
-      "version": "1.1.1",
-      "resolved": "https://registry.npmjs.org/es-object-atoms/-/es-object-atoms-1.1.1.tgz",
-      "integrity": "sha512-FGgH2h8zKNim9ljj7dankFPcICIK9Cp5bm+c2gQSYePhpaG5+esrLODihIorn+Pe6FGJzWhXQotPv73jTaldXA==",
+      "version": "1.1.2",
+      "resolved": "https://registry.npmjs.org/es-object-atoms/-/es-object-atoms-1.1.2.tgz",
+      "integrity": "sha512-HWcBoN6NileqtSydK2FqHbS/LoDd2pqrnQHLyJzBj4kOp/ky2MWMN694xOfkK8/SnUsW2DH7EfyVlydKCsm1Zw==",
       "license": "MIT",
       "dependencies": {
         "es-errors": "^1.3.0"
@@ -1387,9 +1387,9 @@
       "license": "MIT"
     },
     "node_modules/fast-uri": {
-      "version": "3.1.4",
-      "resolved": "https://registry.npmjs.org/fast-uri/-/fast-uri-3.1.4.tgz",
-      "integrity": "sha512-8JnbkQ4juDyvYs4mgFGQqg4yCYtFDtUtmp2QIQq11ZZe5CFQ5wcqm1rqDgAh/QdMySuBnPzMUiJUNZG5N/AiQw==",
+      "version": "3.1.7",
+      "resolved": "https://registry.npmjs.org/fast-uri/-/fast-uri-3.1.7.tgz",
+      "integrity": "sha512-dOvZVzjdZdz7phd9v6jCbwxrBW3fK6n8Rc0CtdmM4bumzMnxywBYhuph6J819RRw/ku+rLbelwfMunktuzVVHg==",
       "funding": [
         {
           "type": "github",
@@ -1526,9 +1526,9 @@
       }
     },
     "node_modules/hasown": {
-      "version": "2.0.2",
-      "resolved": "https://registry.npmjs.org/hasown/-/hasown-2.0.2.tgz",
-      "integrity": "sha512-0hJU9SCPvmMzIBdZFqNPXWa6dqh7WdH0cII9y+CyS8rG3nL48Bclra9HmKhVVUHyPWNH5Y7xDwAB7bfgSjkUMQ==",
+      "version": "2.0.4",
+      "resolved": "https://registry.npmjs.org/hasown/-/hasown-2.0.4.tgz",
+      "integrity": "sha512-T2UbfbBEF32wiepXIsMlTW9+dDYC6wMh/t/vYA4tuOMKqWz/n3vr1NFSxQiyP+zk2mXsoMA/i/7qV6LKut1t1A==",
       "license": "MIT",
       "dependencies": {
         "function-bind": "^1.1.2"
@@ -1538,9 +1538,9 @@
       }
     },
     "node_modules/hono": {
-      "version": "4.12.27",
-      "resolved": "https://registry.npmjs.org/hono/-/hono-4.12.27.tgz",
-      "integrity": "sha512-1yrb/+w6HWQJrUCLkJ2IF5jNIPvvFkblV5RNOYl6bV+OA6p9GLcMpHFFGTosSvHvcAUibuUukRqhlYI4z32C7Q==",
+      "version": "4.13.7",
+      "resolved": "https://registry.npmjs.org/hono/-/hono-4.13.7.tgz",
+      "integrity": "sha512-c8/gF9ac8Y78/agExVocyLevgR+JlpNB444Py0FSX8pJoPdYUfUzRcXtYEYGwt6l19qIlVZPN5Mfsw9jFShmQQ==",
       "license": "MIT",
       "engines": {
         "node": ">=16.9.0"
@@ -1589,9 +1589,9 @@
       "license": "ISC"
     },
     "node_modules/ip-address": {
-      "version": "10.2.0",
-      "resolved": "https://registry.npmjs.org/ip-address/-/ip-address-10.2.0.tgz",
-      "integrity": "sha512-/+S6j4E9AHvW9SWMSEY9Xfy66O5PWvVEJ08O0y5JGyEKQpojb0K0GKpz/v5HJ/G0vi3D2sjGK78119oXZeE0qA==",
+      "version": "10.4.0",
+      "resolved": "https://registry.npmjs.org/ip-address/-/ip-address-10.4.0.tgz",
+      "integrity": "sha512-oSK96Grm3aP6OrS263xVxbNDGVL7rzBtYdpGqlDG8iQdoenDoTs/nkki+DflYbAEE8Xl6o5YxhxlrKvI3nqKXQ==",
       "license": "MIT",
       "engines": {
         "node": ">= 12"
@@ -1802,12 +1802,13 @@
       }
     },
     "node_modules/qs": {
-      "version": "6.15.2",
-      "resolved": "https://registry.npmjs.org/qs/-/qs-6.15.2.tgz",
-      "integrity": "sha512-Rzq0KEyX/w/tEybncDgdkZrJgVUsUMk3xjh3t5bv3S1HTAtg+uOYt72+ZfwiQwKdysThkTBdL/rTi6HDmX9Ddw==",
+      "version": "6.16.0",
+      "resolved": "https://registry.npmjs.org/qs/-/qs-6.16.0.tgz",
+      "integrity": "sha512-h6fhOIaRrID2CbEY2fqs+7t+UXZo+MLAnU5gRIq85uFtdiUPCdsApMlHhXogKVM4HM2DVbIjGNTTYH2OcmP1vA==",
       "license": "BSD-3-Clause",
       "dependencies": {
-        "side-channel": "^1.1.0"
+        "es-define-property": "^1.0.1",
+        "side-channel": "^1.1.1"
       },
       "engines": {
         "node": ">=0.6"
@@ -1944,14 +1945,14 @@
       }
     },
     "node_modules/side-channel": {
-      "version": "1.1.0",
-      "resolved": "https://registry.npmjs.org/side-channel/-/side-channel-1.1.0.tgz",
-      "integrity": "sha512-ZX99e6tRweoUXqR+VBrslhda51Nh5MTQwou5tnUDgbtyM0dBgmhEDtWGP/xbKn6hqfPRHujUNwz5fy/wbbhnpw==",
+      "version": "1.1.1",
+      "resolved": "https://registry.npmjs.org/side-channel/-/side-channel-1.1.1.tgz",
+      "integrity": "sha512-6x6dK6zJdpTzF4sQeNYxwtvBzf6Eg4GtlesS94HOvTudUeyK2WXAaIfmDgsyslYrRBeFIlsi54AYsFGUuhmvrQ==",
       "license": "MIT",
       "dependencies": {
         "es-errors": "^1.3.0",
-        "object-inspect": "^1.13.3",
-        "side-channel-list": "^1.0.0",
+        "object-inspect": "^1.13.4",
+        "side-channel-list": "^1.0.1",
         "side-channel-map": "^1.0.1",
         "side-channel-weakmap": "^1.0.2"
       },
@@ -1963,13 +1964,13 @@
       }
     },
     "node_modules/side-channel-list": {
-      "version": "1.0.0",
-      "resolved": "https://registry.npmjs.org/side-channel-list/-/side-channel-list-1.0.0.tgz",
-      "integrity": "sha512-FCLHtRD/gnpCiCHEiJLOwdmFP+wzCmDEkc9y7NsYxeF4u7Btsn1ZuwgwJGxImImHicJArLP4R0yX4c2KCrMrTA==",
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/side-channel-list/-/side-channel-list-1.0.1.tgz",
+      "integrity": "sha512-mjn/0bi/oUURjc5Xl7IaWi/OJJJumuoJFQJfDDyO46+hBWsfaVM65TBHq2eoZBhzl9EchxOijpkbRC8SVBQU0w==",
       "license": "MIT",
       "dependencies": {
         "es-errors": "^1.3.0",
-        "object-inspect": "^1.13.3"
+        "object-inspect": "^1.13.4"
       },
       "engines": {
         "node": ">= 0.4"
@@ -2034,9 +2035,9 @@
       }
     },
     "node_modules/tsx": {
-      "version": "4.23.1",
-      "resolved": "https://registry.npmjs.org/tsx/-/tsx-4.23.1.tgz",
-      "integrity": "sha512-GQHnkIfxyx1wYCOS/wonik5MVRZU9hi1TEZmzGZSCJB1y9YgoZ8H6itNE/u4suE+yLmOzuE4E5S4TZ/ZX2wcWQ==",
+      "version": "4.23.13",
+      "resolved": "https://registry.npmjs.org/tsx/-/tsx-4.23.13.tgz",
+      "integrity": "sha512-BL5MGkRln6aDYhb0xbQlEAGw743BaZYWdbWtdJOBriYJboKgUUYCadFp2/FpBBZquBC/ezNBn7wMMPx7FDZUDw==",
       "dev": true,
       "license": "MIT",
       "dependencies": {
@@ -2119,9 +2120,9 @@
       }
     },
     "node_modules/undici-types": {
-      "version": "8.3.0",
-      "resolved": "https://registry.npmjs.org/undici-types/-/undici-types-8.3.0.tgz",
-      "integrity": "sha512-j375ScV60dom+YkPFIfTLcOiPxkN/buHz5GobjLhixFuANaNs3C9l4GmrWqejgXWJ7BbJcFYpTEUkS1Ge8bpZQ==",
+      "version": "8.9.0",
+      "resolved": "https://registry.npmjs.org/undici-types/-/undici-types-8.9.0.tgz",
+      "integrity": "sha512-KTDyRTYX8sWmKXAikPHHSyc63CRPETMctyjKFupcC6OBLXT3xsN0e9aF7m+mIXutFWpUXuedtowG7iLOzp0kQg==",
       "dev": true,
       "license": "MIT"
     },
@@ -2165,9 +2166,9 @@
       "license": "ISC"
     },
     "node_modules/zod": {
-      "version": "4.4.3",
-      "resolved": "https://registry.npmjs.org/zod/-/zod-4.4.3.tgz",
-      "integrity": "sha512-ytENFjIJFl2UwYglde2jchW2Hwm4GJFLDiSXWdTrJQBIN9Fcyp7n4DhxJEiWNAJMV1/BqWfW/kkg71UDcHJyTQ==",
+      "version": "4.6.2",
+      "resolved": "https://registry.npmjs.org/zod/-/zod-4.6.2.tgz",
+      "integrity": "sha512-lh5RCAGFa1Cm2hjtNwLQhSs/AsqdWnTQaBER9fEwN/88pSh7KOtJavtBx/0VlkN/uFd61SwYmljLMDAsHlvzBQ==",
       "license": "MIT",
       "funding": {
         "url": "https://github.com/sponsors/colinhacks"

integration-test/src/jvmTest/typescript/package.json

@@ -9,16 +9,16 @@
     "server:http": "tsx server/http-server.ts"
   },
   "dependencies": {
-    "@modelcontextprotocol/sdk": "^1.29.0",
+    "@modelcontextprotocol/sdk": "^1.30.0",
     "express": "^5.2.1",
-    "zod": "^4.4.3"
+    "zod": "^4.6.2"
   },
   "devDependencies": {
     "@types/cors": "^2.8.19",
     "@types/express": "^5.0.6",
-    "@types/node": "^26.1.1",
+    "@types/node": "^26.5.1",
     "cors": "^2.8.6",
-    "tsx": "^4.23.1",
+    "tsx": "^4.23.13",
     "typescript": "^7.0.2"
   }
 }

kotlin-sdk-core/api/kotlin-sdk-core.api

@@ -390,6 +390,19 @@ public final class io/modelcontextprotocol/kotlin/sdk/types/BooleanSchema$Compan
 	public final fun serializer ()Lkotlinx/serialization/KSerializer;
 }
 
+public final class io/modelcontextprotocol/kotlin/sdk/types/CacheScope : java/lang/Enum {
+	public static final field Companion Lio/modelcontextprotocol/kotlin/sdk/types/CacheScope$Companion;
+	public static final field Private Lio/modelcontextprotocol/kotlin/sdk/types/CacheScope;
+	public static final field Public Lio/modelcontextprotocol/kotlin/sdk/types/CacheScope;
+	public static fun getEntries ()Lkotlin/enums/EnumEntries;
+	public static fun valueOf (Ljava/lang/String;)Lio/modelcontextprotocol/kotlin/sdk/types/CacheScope;
+	public static fun values ()[Lio/modelcontextprotocol/kotlin/sdk/types/CacheScope;
+}
+
+public final class io/modelcontextprotocol/kotlin/sdk/types/CacheScope$Companion {
+	public final fun serializer ()Lkotlinx/serialization/KSerializer;
+}
+
 public final class io/modelcontextprotocol/kotlin/sdk/types/CallToolRequest : io/modelcontextprotocol/kotlin/sdk/types/ClientRequest {
 	public static final field Companion Lio/modelcontextprotocol/kotlin/sdk/types/CallToolRequest$Companion;
 	public fun <init> (Lio/modelcontextprotocol/kotlin/sdk/types/CallToolRequestParams;)V
@@ -1395,6 +1408,104 @@ public final class io/modelcontextprotocol/kotlin/sdk/types/CustomRequest$Compan
 	public final fun serializer ()Lkotlinx/serialization/KSerializer;
 }
 
+public final class io/modelcontextprotocol/kotlin/sdk/types/DiscoverRequest : io/modelcontextprotocol/kotlin/sdk/types/ClientRequest {
+	public static final field Companion Lio/modelcontextprotocol/kotlin/sdk/types/DiscoverRequest$Companion;
+	public fun <init> (Lio/modelcontextprotocol/kotlin/sdk/types/DiscoverRequestParams;)V
+	public final fun component1 ()Lio/modelcontextprotocol/kotlin/sdk/types/DiscoverRequestParams;
+	public final fun copy (Lio/modelcontextprotocol/kotlin/sdk/types/DiscoverRequestParams;)Lio/modelcontextprotocol/kotlin/sdk/types/DiscoverRequest;
+	public static synthetic fun copy$default (Lio/modelcontextprotocol/kotlin/sdk/types/DiscoverRequest;Lio/modelcontextprotocol/kotlin/sdk/types/DiscoverRequestParams;ILjava/lang/Object;)Lio/modelcontextprotocol/kotlin/sdk/types/DiscoverRequest;
+	public fun equals (Ljava/lang/Object;)Z
+	public final fun getMeta--Khlwt8 ()Lkotlinx/serialization/json/JsonObject;
+	public fun getMethod ()Lio/modelcontextprotocol/kotlin/sdk/types/Method;
+	public fun getParams ()Lio/modelcontextprotocol/kotlin/sdk/types/DiscoverRequestParams;
+	public synthetic fun getParams ()Lio/modelcontextprotocol/kotlin/sdk/types/RequestParams;
+	public fun hashCode ()I
+	public fun toString ()Ljava/lang/String;
+}
+
+public final synthetic class io/modelcontextprotocol/kotlin/sdk/types/DiscoverRequest$$serializer : kotlinx/serialization/internal/GeneratedSerializer {
+	public static final field INSTANCE Lio/modelcontextprotocol/kotlin/sdk/types/DiscoverRequest$$serializer;
+	public final fun childSerializers ()[Lkotlinx/serialization/KSerializer;
+	public final fun deserialize (Lkotlinx/serialization/encoding/Decoder;)Lio/modelcontextprotocol/kotlin/sdk/types/DiscoverRequest;
+	public synthetic fun deserialize (Lkotlinx/serialization/encoding/Decoder;)Ljava/lang/Object;
+	public final fun getDescriptor ()Lkotlinx/serialization/descriptors/SerialDescriptor;
+	public final fun serialize (Lkotlinx/serialization/encoding/Encoder;Lio/modelcontextprotocol/kotlin/sdk/types/DiscoverRequest;)V
+	public synthetic fun serialize (Lkotlinx/serialization/encoding/Encoder;Ljava/lang/Object;)V
+	public fun typeParametersSerializers ()[Lkotlinx/serialization/KSerializer;
+}
+
+public final class io/modelcontextprotocol/kotlin/sdk/types/DiscoverRequest$Companion {
+	public final fun serializer ()Lkotlinx/serialization/KSerializer;
+}
+
+public final class io/modelcontextprotocol/kotlin/sdk/types/DiscoverRequestParams : io/modelcontextprotocol/kotlin/sdk/types/RequestParams {
+	public static final field Companion Lio/modelcontextprotocol/kotlin/sdk/types/DiscoverRequestParams$Companion;
+	public synthetic fun <init> (Lkotlinx/serialization/json/JsonObject;Lkotlin/jvm/internal/DefaultConstructorMarker;)V
+	public final fun component1--Khlwt8 ()Lkotlinx/serialization/json/JsonObject;
+	public final fun copy-hVVZdjo (Lkotlinx/serialization/json/JsonObject;)Lio/modelcontextprotocol/kotlin/sdk/types/DiscoverRequestParams;
+	public static synthetic fun copy-hVVZdjo$default (Lio/modelcontextprotocol/kotlin/sdk/types/DiscoverRequestParams;Lkotlinx/serialization/json/JsonObject;ILjava/lang/Object;)Lio/modelcontextprotocol/kotlin/sdk/types/DiscoverRequestParams;
+	public fun equals (Ljava/lang/Object;)Z
+	public fun getMeta--Khlwt8 ()Lkotlinx/serialization/json/JsonObject;
+	public synthetic fun getMeta-VI-3G7E ()Lkotlinx/serialization/json/JsonObject;
+	public fun hashCode ()I
+	public fun toString ()Ljava/lang/String;
+}
+
+public final synthetic class io/modelcontextprotocol/kotlin/sdk/types/DiscoverRequestParams$$serializer : kotlinx/serialization/internal/GeneratedSerializer {
+	public static final field INSTANCE Lio/modelcontextprotocol/kotlin/sdk/types/DiscoverRequestParams$$serializer;
+	public final fun childSerializers ()[Lkotlinx/serialization/KSerializer;
+	public final fun deserialize (Lkotlinx/serialization/encoding/Decoder;)Lio/modelcontextprotocol/kotlin/sdk/types/DiscoverRequestParams;
+	public synthetic fun deserialize (Lkotlinx/serialization/encoding/Decoder;)Ljava/lang/Object;
+	public final fun getDescriptor ()Lkotlinx/serialization/descriptors/SerialDescriptor;
+	public final fun serialize (Lkotlinx/serialization/encoding/Encoder;Lio/modelcontextprotocol/kotlin/sdk/types/DiscoverRequestParams;)V
+	public synthetic fun serialize (Lkotlinx/serialization/encoding/Encoder;Ljava/lang/Object;)V
+	public fun typeParametersSerializers ()[Lkotlinx/serialization/KSerializer;
+}
+
+public final class io/modelcontextprotocol/kotlin/sdk/types/DiscoverRequestParams$Companion {
+	public final fun serializer ()Lkotlinx/serialization/KSerializer;
+}
+
+public final class io/modelcontextprotocol/kotlin/sdk/types/DiscoverResult : io/modelcontextprotocol/kotlin/sdk/types/ServerResult {
+	public static final field Companion Lio/modelcontextprotocol/kotlin/sdk/types/DiscoverResult$Companion;
+	public fun <init> (Ljava/util/List;Lio/modelcontextprotocol/kotlin/sdk/types/ServerCapabilities;Ljava/lang/String;Ljava/lang/String;JLio/modelcontextprotocol/kotlin/sdk/types/CacheScope;Lkotlinx/serialization/json/JsonObject;)V
+	public synthetic fun <init> (Ljava/util/List;Lio/modelcontextprotocol/kotlin/sdk/types/ServerCapabilities;Ljava/lang/String;Ljava/lang/String;JLio/modelcontextprotocol/kotlin/sdk/types/CacheScope;Lkotlinx/serialization/json/JsonObject;ILkotlin/jvm/internal/DefaultConstructorMarker;)V
+	public final fun component1 ()Ljava/util/List;
+	public final fun component2 ()Lio/modelcontextprotocol/kotlin/sdk/types/ServerCapabilities;
+	public final fun component3 ()Ljava/lang/String;
+	public final fun component4 ()Ljava/lang/String;
+	public final fun component5 ()J
+	public final fun component6 ()Lio/modelcontextprotocol/kotlin/sdk/types/CacheScope;
+	public final fun component7 ()Lkotlinx/serialization/json/JsonObject;
+	public final fun copy (Ljava/util/List;Lio/modelcontextprotocol/kotlin/sdk/types/ServerCapabilities;Ljava/lang/String;Ljava/lang/String;JLio/modelcontextprotocol/kotlin/sdk/types/CacheScope;Lkotlinx/serialization/json/JsonObject;)Lio/modelcontextprotocol/kotlin/sdk/types/DiscoverResult;
+	public static synthetic fun copy$default (Lio/modelcontextprotocol/kotlin/sdk/types/DiscoverResult;Ljava/util/List;Lio/modelcontextprotocol/kotlin/sdk/types/ServerCapabilities;Ljava/lang/String;Ljava/lang/String;JLio/modelcontextprotocol/kotlin/sdk/types/CacheScope;Lkotlinx/serialization/json/JsonObject;ILjava/lang/Object;)Lio/modelcontextprotocol/kotlin/sdk/types/DiscoverResult;
+	public fun equals (Ljava/lang/Object;)Z
+	public final fun getCacheScope ()Lio/modelcontextprotocol/kotlin/sdk/types/CacheScope;
+	public final fun getCapabilities ()Lio/modelcontextprotocol/kotlin/sdk/types/ServerCapabilities;
+	public final fun getInstructions ()Ljava/lang/String;
+	public fun getMeta ()Lkotlinx/serialization/json/JsonObject;
+	public final fun getResultType ()Ljava/lang/String;
+	public final fun getSupportedVersions ()Ljava/util/List;
+	public final fun getTtlMs ()J
+	public fun hashCode ()I
+	public fun toString ()Ljava/lang/String;
+}
+
+public final synthetic class io/modelcontextprotocol/kotlin/sdk/types/DiscoverResult$$serializer : kotlinx/serialization/internal/GeneratedSerializer {
+	public static final field INSTANCE Lio/modelcontextprotocol/kotlin/sdk/types/DiscoverResult$$serializer;
+	public final fun childSerializers ()[Lkotlinx/serialization/KSerializer;
+	public final fun deserialize (Lkotlinx/serialization/encoding/Decoder;)Lio/modelcontextprotocol/kotlin/sdk/types/DiscoverResult;
+	public synthetic fun deserialize (Lkotlinx/serialization/encoding/Decoder;)Ljava/lang/Object;
+	public final fun getDescriptor ()Lkotlinx/serialization/descriptors/SerialDescriptor;
+	public final fun serialize (Lkotlinx/serialization/encoding/Encoder;Lio/modelcontextprotocol/kotlin/sdk/types/DiscoverResult;)V
+	public synthetic fun serialize (Lkotlinx/serialization/encoding/Encoder;Ljava/lang/Object;)V
+	public fun typeParametersSerializers ()[Lkotlinx/serialization/KSerializer;
+}
+
+public final class io/modelcontextprotocol/kotlin/sdk/types/DiscoverResult$Companion {
+	public final fun serializer ()Lkotlinx/serialization/KSerializer;
+}
+
 public final class io/modelcontextprotocol/kotlin/sdk/types/DoubleSchema : io/modelcontextprotocol/kotlin/sdk/types/NumberSchemaDefinition {
 	public static final field Companion Lio/modelcontextprotocol/kotlin/sdk/types/DoubleSchema$Companion;
 	public fun <init> ()V
@@ -3245,6 +3356,7 @@ public final class io/modelcontextprotocol/kotlin/sdk/types/Method$Defined : jav
 	public static final field ResourcesUnsubscribe Lio/modelcontextprotocol/kotlin/sdk/types/Method$Defined;
 	public static final field RootsList Lio/modelcontextprotocol/kotlin/sdk/types/Method$Defined;
 	public static final field SamplingCreateMessage Lio/modelcontextprotocol/kotlin/sdk/types/Method$Defined;
+	public static final field ServerDiscover Lio/modelcontextprotocol/kotlin/sdk/types/Method$Defined;
 	public static final field TasksCancel Lio/modelcontextprotocol/kotlin/sdk/types/Method$Defined;
 	public static final field TasksGet Lio/modelcontextprotocol/kotlin/sdk/types/Method$Defined;
 	public static final field TasksList Lio/modelcontextprotocol/kotlin/sdk/types/Method$Defined;
@@ -3767,6 +3879,7 @@ public final class io/modelcontextprotocol/kotlin/sdk/types/RPCError$ErrorCode {
 	public static final field PARSE_ERROR I
 	public static final field REQUEST_TIMEOUT I
 	public static final field RESOURCE_NOT_FOUND I
+	public static final field UNSUPPORTED_PROTOCOL_VERSION I
 	public static final field URL_ELICITATION_REQUIRED I
 }
 
@@ -4012,8 +4125,12 @@ public final class io/modelcontextprotocol/kotlin/sdk/types/RequestMeta {
 	public static fun equals-impl (Lkotlinx/serialization/json/JsonObject;Ljava/lang/Object;)Z
 	public static final fun equals-impl0 (Lkotlinx/serialization/json/JsonObject;Lkotlinx/serialization/json/JsonObject;)Z
 	public static final fun get-impl (Lkotlinx/serialization/json/JsonObject;Ljava/lang/String;)Lkotlinx/serialization/json/JsonElement;
+	public static final fun getClientCapabilities-impl (Lkotlinx/serialization/json/JsonObject;)Lio/modelcontextprotocol/kotlin/sdk/types/ClientCapabilities;
+	public static final fun getClientInfo-impl (Lkotlinx/serialization/json/JsonObject;)Lio/modelcontextprotocol/kotlin/sdk/types/Implementation;
 	public final fun getJson ()Lkotlinx/serialization/json/JsonObject;
+	public static final fun getLogLevel-impl (Lkotlinx/serialization/json/JsonObject;)Lio/modelcontextprotocol/kotlin/sdk/types/LoggingLevel;
 	public static final fun getProgressToken-impl (Lkotlinx/serialization/json/JsonObject;)Lio/modelcontextprotocol/kotlin/sdk/types/RequestId;
+	public static final fun getProtocolVersion-impl (Lkotlinx/serialization/json/JsonObject;)Ljava/lang/String;
 	public static final fun getRelatedTask-impl (Lkotlinx/serialization/json/JsonObject;)Lio/modelcontextprotocol/kotlin/sdk/types/RelatedTaskMetadata;
 	public fun hashCode ()I
 	public static fun hashCode-impl (Lkotlinx/serialization/json/JsonObject;)I
@@ -5736,6 +5853,35 @@ public final class io/modelcontextprotocol/kotlin/sdk/types/UnsubscribeRequestPa
 	public final fun serializer ()Lkotlinx/serialization/KSerializer;
 }
 
+public final class io/modelcontextprotocol/kotlin/sdk/types/UnsupportedProtocolVersionData {
+	public static final field Companion Lio/modelcontextprotocol/kotlin/sdk/types/UnsupportedProtocolVersionData$Companion;
+	public fun <init> (Ljava/util/List;Ljava/lang/String;)V
+	public final fun component1 ()Ljava/util/List;
+	public final fun component2 ()Ljava/lang/String;
+	public final fun copy (Ljava/util/List;Ljava/lang/String;)Lio/modelcontextprotocol/kotlin/sdk/types/UnsupportedProtocolVersionData;
+	public static synthetic fun copy$default (Lio/modelcontextprotocol/kotlin/sdk/types/UnsupportedProtocolVersionData;Ljava/util/List;Ljava/lang/String;ILjava/lang/Object;)Lio/modelcontextprotocol/kotlin/sdk/types/UnsupportedProtocolVersionData;
+	public fun equals (Ljava/lang/Object;)Z
+	public final fun getRequested ()Ljava/lang/String;
+	public final fun getSupported ()Ljava/util/List;
+	public fun hashCode ()I
+	public fun toString ()Ljava/lang/String;
+}
+
+public final synthetic class io/modelcontextprotocol/kotlin/sdk/types/UnsupportedProtocolVersionData$$serializer : kotlinx/serialization/internal/GeneratedSerializer {
+	public static final field INSTANCE Lio/modelcontextprotocol/kotlin/sdk/types/UnsupportedProtocolVersionData$$serializer;
+	public final fun childSerializers ()[Lkotlinx/serialization/KSerializer;
+	public final fun deserialize (Lkotlinx/serialization/encoding/Decoder;)Lio/modelcontextprotocol/kotlin/sdk/types/UnsupportedProtocolVersionData;
+	public synthetic fun deserialize (Lkotlinx/serialization/encoding/Decoder;)Ljava/lang/Object;
+	public final fun getDescriptor ()Lkotlinx/serialization/descriptors/SerialDescriptor;
+	public final fun serialize (Lkotlinx/serialization/encoding/Encoder;Lio/modelcontextprotocol/kotlin/sdk/types/UnsupportedProtocolVersionData;)V
+	public synthetic fun serialize (Lkotlinx/serialization/encoding/Encoder;Ljava/lang/Object;)V
+	public fun typeParametersSerializers ()[Lkotlinx/serialization/KSerializer;
+}
+
+public final class io/modelcontextprotocol/kotlin/sdk/types/UnsupportedProtocolVersionData$Companion {
+	public final fun serializer ()Lkotlinx/serialization/KSerializer;
+}
+
 public final class io/modelcontextprotocol/kotlin/sdk/types/UntitledMultiSelectEnumSchema : io/modelcontextprotocol/kotlin/sdk/types/MultiSelectEnumSchema {
 	public static final field Companion Lio/modelcontextprotocol/kotlin/sdk/types/UntitledMultiSelectEnumSchema$Companion;
 	public fun <init> (Ljava/lang/String;Ljava/lang/String;Ljava/lang/Integer;Ljava/lang/Integer;Lio/modelcontextprotocol/kotlin/sdk/types/UntitledMultiSelectEnumSchema$Items;Ljava/util/List;)V

kotlin-sdk-core/src/commonMain/kotlin/io/modelcontextprotocol/kotlin/sdk/types/discovery.kt

@@ -0,0 +1,107 @@
+package io.modelcontextprotocol.kotlin.sdk.types
+
+import io.modelcontextprotocol.kotlin.sdk.ExperimentalMcpApi
+import kotlinx.serialization.EncodeDefault
+import kotlinx.serialization.ExperimentalSerializationApi
+import kotlinx.serialization.Required
+import kotlinx.serialization.SerialName
+import kotlinx.serialization.Serializable
+import kotlinx.serialization.SerializationException
+import kotlinx.serialization.json.JsonObject
+
+/**
+ * Parameters for a `server/discover` request.
+ *
+ * Discovery belongs to the request-scoped lifecycle and therefore requires a protocol version and
+ * client capabilities in [meta]. Client information is recommended by the protocol but optional.
+ * Unknown metadata entries are preserved by [RequestMeta].
+ *
+ * @property meta request-scoped protocol and client metadata
+ * @throws IllegalArgumentException if required request-scoped metadata is absent
+ * @throws SerializationException if required metadata is malformed
+ */
+@Serializable
+@ExperimentalMcpApi
+public data class DiscoverRequestParams(
+    @SerialName("_meta")
+    override val meta: RequestMeta,
+) : RequestParams {
+    init {
+        requireNotNull(meta.protocolVersion) { "${RequestMetaKeys.PROTOCOL_VERSION} is required" }
+        requireNotNull(meta.clientCapabilities) { "${RequestMetaKeys.CLIENT_CAPABILITIES} is required" }
+    }
+}
+
+/**
+ * Requests the protocol versions, capabilities, and metadata advertised by a server.
+ *
+ * @property params request metadata required by the request-scoped lifecycle
+ */
+@Serializable
+@ExperimentalMcpApi
+public data class DiscoverRequest(override val params: DiscoverRequestParams) : ClientRequest {
+    @OptIn(ExperimentalSerializationApi::class)
+    @EncodeDefault
+    override val method: Method = Method.Defined.ServerDiscover
+
+    /** Metadata for this request. */
+    public val meta: RequestMeta
+        get() = params.meta
+}
+
+/** Defines where a cached discovery result may be reused. */
+@Serializable
+@ExperimentalMcpApi
+public enum class CacheScope {
+    /** The result may only be reused within the same authorization context. */
+    @SerialName("private")
+    Private,
+
+    /** The result may be shared across authorization contexts. */
+    @SerialName("public")
+    Public,
+}
+
+/**
+ * Result returned by `server/discover`.
+ *
+ * @property supportedVersions protocol versions supported by the server
+ * @property capabilities capabilities advertised by the server
+ * @property instructions optional guidance for clients using the server
+ * @property resultType discriminator for the result representation
+ * @property ttlMs number of milliseconds clients may treat this result as fresh
+ * @property cacheScope authorization boundary within which the result may be reused
+ * @property meta optional response metadata, including optional server information
+ * @throws IllegalArgumentException if [ttlMs] is negative
+ */
+@Serializable
+@ExperimentalMcpApi
+public data class DiscoverResult(
+    val supportedVersions: List<String>,
+    val capabilities: ServerCapabilities,
+    val instructions: String? = null,
+    @EncodeDefault
+    val resultType: String = COMPLETE_RESULT_TYPE,
+    @Required
+    val ttlMs: Long = 0,
+    @Required
+    val cacheScope: CacheScope = CacheScope.Private,
+    @SerialName("_meta")
+    override val meta: JsonObject? = null,
+) : ServerResult {
+    init {
+        require(ttlMs >= 0) { "ttlMs must be non-negative, but was $ttlMs" }
+    }
+}
+
+/**
+ * Data returned when a request selects an unsupported protocol version.
+ *
+ * @property supported protocol versions supported by the receiver
+ * @property requested protocol version selected by the request
+ */
+@Serializable
+@ExperimentalMcpApi
+public data class UnsupportedProtocolVersionData(val supported: List<String>, val requested: String)
+
+internal const val COMPLETE_RESULT_TYPE: String = "complete"

kotlin-sdk-core/src/commonMain/kotlin/io/modelcontextprotocol/kotlin/sdk/types/jsonRpc.kt

@@ -269,6 +269,9 @@ public data class RPCError(val code: Int, val message: String, val data: JsonEle
         /** Resource not found */
         public const val RESOURCE_NOT_FOUND: Int = -32002
 
+        /** The request selected a protocol version that the receiver does not support. */
+        public const val UNSUPPORTED_PROTOCOL_VERSION: Int = -32022
+
         /**
          * A URL-mode elicitation must be completed before the request can be processed.
          * The error [data][RPCError.data] carries the required URL-mode elicitations

kotlin-sdk-core/src/commonMain/kotlin/io/modelcontextprotocol/kotlin/sdk/types/methods.kt

@@ -16,6 +16,7 @@ public sealed interface Method {
     @Serializable
     public enum class Defined(override val value: String) : Method {
         Initialize("initialize"),
+        ServerDiscover("server/discover"),
         Ping("ping"),
         ResourcesList("resources/list"),
         ResourcesTemplatesList("resources/templates/list"),

kotlin-sdk-core/src/commonMain/kotlin/io/modelcontextprotocol/kotlin/sdk/types/request.kt

@@ -1,8 +1,10 @@
 package io.modelcontextprotocol.kotlin.sdk.types
 
+import io.modelcontextprotocol.kotlin.sdk.ExperimentalMcpApi
 import kotlinx.serialization.ExperimentalSerializationApi
 import kotlinx.serialization.SerialName
 import kotlinx.serialization.Serializable
+import kotlinx.serialization.SerializationException
 import kotlinx.serialization.json.JsonElement
 import kotlinx.serialization.json.JsonObject
 import kotlinx.serialization.json.JsonPrimitive
@@ -11,6 +13,13 @@ import kotlinx.serialization.json.long
 import kotlinx.serialization.json.longOrNull
 import kotlin.jvm.JvmInline
 
+internal object RequestMetaKeys {
+    const val PROTOCOL_VERSION: String = "io.modelcontextprotocol/protocolVersion"
+    const val CLIENT_INFO: String = "io.modelcontextprotocol/clientInfo"
+    const val CLIENT_CAPABILITIES: String = "io.modelcontextprotocol/clientCapabilities"
+    const val LOG_LEVEL: String = "io.modelcontextprotocol/logLevel"
+}
+
 /**
  * Metadata attached to a request's `_meta` field.
  *
@@ -40,6 +49,88 @@ public value class RequestMeta(public val json: JsonObject) {
             McpJson.decodeFromJsonElement(element)
         }
 
+    /**
+     * The MCP protocol version selected for this request, or `null` when absent.
+     *
+     * This field is required by the request-scoped lifecycle introduced in protocol version
+     * `2026-07-28`, but remains optional here so older requests retain their wire shape.
+     *
+     * @throws SerializationException if the field is present but is not a string
+     */
+    @ExperimentalMcpApi
+    public val protocolVersion: String?
+        get() = json[RequestMetaKeys.PROTOCOL_VERSION]?.let { element ->
+            if (element !is JsonPrimitive || !element.isString) {
+                throw SerializationException("${RequestMetaKeys.PROTOCOL_VERSION} must be a JSON string")
+            }
+            element.content
+        }
+
+    /**
+     * Information about the client making this request, or `null` when absent.
+     *
+     * Request-scoped clients should include this field unless specifically configured not to do
+     * so. The self-reported value is intended for display, logging, and debugging; servers should
+     * not use it to change behavior or rely on it for security decisions.
+     *
+     * @throws SerializationException if the field is present but is not a valid [Implementation]
+     */
+    @ExperimentalMcpApi
+    public val clientInfo: Implementation?
+        get() = json[RequestMetaKeys.CLIENT_INFO]?.let { element ->
+            try {
+                McpJson.decodeFromJsonElement<Implementation>(element)
+            } catch (cause: SerializationException) {
+                throw SerializationException(
+                    "${RequestMetaKeys.CLIENT_INFO} must be a valid client implementation",
+                    cause,
+                )
+            }
+        }
+
+    /**
+     * Capabilities declared by the client for this request, or `null` when absent.
+     *
+     * Servers using the request-scoped lifecycle must not infer capabilities from an earlier
+     * request. An empty object means the client supports no optional capabilities.
+     *
+     * @throws SerializationException if the field is present but is not valid [ClientCapabilities]
+     */
+    @ExperimentalMcpApi
+    public val clientCapabilities: ClientCapabilities?
+        get() = json[RequestMetaKeys.CLIENT_CAPABILITIES]?.let { element ->
+            try {
+                McpJson.decodeFromJsonElement<ClientCapabilities>(element)
+            } catch (cause: SerializationException) {
+                throw SerializationException(
+                    "${RequestMetaKeys.CLIENT_CAPABILITIES} must be a valid client capabilities object",
+                    cause,
+                )
+            }
+        }
+
+    /**
+     * Minimum severity of request-associated log notifications, or `null` when absent.
+     *
+     * In the request-scoped lifecycle, absence means that the server must not emit log
+     * notifications for this request.
+     *
+     * @throws SerializationException if the field is present but is not a valid [LoggingLevel]
+     */
+    @Deprecated("Per-request log levels are deprecated as of MCP protocol version 2026-07-28 (SEP-2577).")
+    @ExperimentalMcpApi
+    public val logLevel: LoggingLevel?
+        get() = json[RequestMetaKeys.LOG_LEVEL]?.let { element ->
+            try {
+                McpJson.decodeFromJsonElement<LoggingLevel>(element)
+            } catch (cause: SerializationException) {
+                throw SerializationException(
+                    "${RequestMetaKeys.LOG_LEVEL} must be a valid logging level",
+                    cause,
+                )
+            }
+        }
+
     /**
      * Retrieves the value associated with the specified key from the JSON object.
      *

kotlin-sdk-core/src/commonMain/kotlin/io/modelcontextprotocol/kotlin/sdk/types/serializers.kt

@@ -1,6 +1,7 @@
 package io.modelcontextprotocol.kotlin.sdk.types
 
 import io.github.oshai.kotlinlogging.KotlinLogging
+import io.modelcontextprotocol.kotlin.sdk.ExperimentalMcpApi
 import kotlinx.serialization.DeserializationStrategy
 import kotlinx.serialization.KSerializer
 import kotlinx.serialization.SerializationException
@@ -238,9 +239,11 @@ internal object ResourceContentsPolymorphicSerializer :
 // Request Serializers
 // ============================================================================
 
+@OptIn(ExperimentalMcpApi::class)
 private val clientRequestDeserializers: Map<String, DeserializationStrategy<ClientRequest>> by lazy {
     mapOf(
         Method.Defined.CompletionComplete.value to CompleteRequest.serializer(),
+        Method.Defined.ServerDiscover.value to DiscoverRequest.serializer(),
         Method.Defined.Initialize.value to InitializeRequest.serializer(),
         Method.Defined.Ping.value to PingRequest.serializer(),
         Method.Defined.LoggingSetLevel.value to SetLevelRequest.serializer(),
@@ -417,9 +420,16 @@ private fun selectClientResultDeserializer(element: JsonElement): Deserializatio
  * Selects the appropriate deserializer for server results based on JSON content.
  * Returns null if the structure doesn't match any known server result type.
  */
+@OptIn(ExperimentalMcpApi::class)
 private fun selectServerResultDeserializer(element: JsonElement): DeserializationStrategy<ServerResult>? {
     val jsonObject = element.jsonObject
+    val isDiscoverResult =
+        "supportedVersions" in jsonObject &&
+            "capabilities" in jsonObject &&
+            "ttlMs" in jsonObject &&
+            "cacheScope" in jsonObject
     return when {
+        isDiscoverResult -> DiscoverResult.serializer()
         "protocolVersion" in jsonObject && "capabilities" in jsonObject -> InitializeResult.serializer()
         "completion" in jsonObject -> CompleteResult.serializer()
         "tools" in jsonObject -> ListToolsResult.serializer()

kotlin-sdk-core/src/commonTest/kotlin/io/modelcontextprotocol/kotlin/sdk/types/DiscoveryTest.kt

@@ -0,0 +1,324 @@
+package io.modelcontextprotocol.kotlin.sdk.types
+
+import io.kotest.assertions.json.shouldEqualJson
+import io.modelcontextprotocol.kotlin.sdk.ExperimentalMcpApi
+import kotlinx.serialization.json.Json
+import kotlinx.serialization.json.jsonObject
+import kotlin.test.Test
+import kotlin.test.assertEquals
+import kotlin.test.assertFails
+import kotlin.test.assertFailsWith
+import kotlin.test.assertIs
+import kotlin.test.assertNotNull
+import kotlin.test.assertNull
+import kotlin.test.assertTrue
+
+@OptIn(ExperimentalMcpApi::class)
+class DiscoveryTest {
+
+    @Test
+    fun `should decode server discover request from its wire shape`() {
+        val request = McpJson.decodeFromString<Request>(
+            """
+            {
+              "method": "server/discover",
+              "params": {
+                "_meta": {
+                  "io.modelcontextprotocol/protocolVersion": "2026-07-28",
+                  "io.modelcontextprotocol/clientInfo": {
+                    "name": "test-client",
+                    "version": "1.0.0"
+                  },
+                  "io.modelcontextprotocol/clientCapabilities": {}
+                }
+              }
+            }
+            """.trimIndent(),
+        )
+
+        val discover = assertIs<DiscoverRequest>(request)
+        assertEquals(Method.Defined.ServerDiscover, discover.method)
+        assertEquals("2026-07-28", discover.meta.protocolVersion)
+        assertEquals("test-client", discover.meta.clientInfo?.name)
+        assertEquals(ClientCapabilities(), discover.meta.clientCapabilities)
+    }
+
+    @Test
+    fun `should decode discovery request without optional client info`() {
+        val request = McpJson.decodeFromString<Request>(
+            """
+            {
+              "method": "server/discover",
+              "params": {
+                "_meta": {
+                  "io.modelcontextprotocol/protocolVersion": "2026-07-28",
+                  "io.modelcontextprotocol/clientCapabilities": {},
+                  "com.example/traceId": "trace-123"
+                }
+              }
+            }
+            """.trimIndent(),
+        )
+
+        val discover = assertIs<DiscoverRequest>(request)
+        assertEquals("2026-07-28", discover.meta.protocolVersion)
+        assertEquals(ClientCapabilities(), discover.meta.clientCapabilities)
+        assertNull(discover.meta.clientInfo)
+        assertNotNull(discover.meta["com.example/traceId"])
+        McpJson.encodeToString<Request>(discover) shouldEqualJson """
+            {
+              "method": "server/discover",
+              "params": {
+                "_meta": {
+                  "io.modelcontextprotocol/protocolVersion": "2026-07-28",
+                  "io.modelcontextprotocol/clientCapabilities": {},
+                  "com.example/traceId": "trace-123"
+                }
+              }
+            }
+        """.trimIndent()
+    }
+
+    @Test
+    fun `should reject discovery requests without required request metadata`() {
+        val invalidParams = listOf(
+            "{}" to "_meta",
+            """{"_meta": {}}""" to RequestMetaKeys.PROTOCOL_VERSION,
+            """
+                {
+                  "_meta": {
+                    "${RequestMetaKeys.PROTOCOL_VERSION}": "2026-07-28",
+                    "${RequestMetaKeys.CLIENT_INFO}": {
+                      "name": "test-client",
+                      "version": "1.0.0"
+                    }
+                  }
+                }
+            """.trimIndent() to RequestMetaKeys.CLIENT_CAPABILITIES,
+        )
+
+        invalidParams.forEach { (params, missingField) ->
+            val failure = assertFails {
+                McpJson.decodeFromString<Request>(
+                    """{"method": "server/discover", "params": $params}""",
+                )
+            }
+
+            assertTrue(
+                failure.message.orEmpty().contains(missingField),
+                "Expected failure to identify missing field $missingField, but was: $failure",
+            )
+        }
+    }
+
+    @Test
+    fun `should serialize every required discovery result field`() {
+        val result = DiscoverResult(
+            supportedVersions = listOf("2026-07-28"),
+            capabilities = ServerCapabilities(
+                tools = ServerCapabilities.Tools(listChanged = true),
+            ),
+            instructions = "Use tools intentionally.",
+        )
+
+        McpJson.encodeToString<ServerResult>(result) shouldEqualJson """
+            {
+              "supportedVersions": ["2026-07-28"],
+              "capabilities": {
+                "tools": {"listChanged": true}
+              },
+              "instructions": "Use tools intentionally.",
+              "resultType": "complete",
+              "ttlMs": 0,
+              "cacheScope": "private"
+            }
+        """.trimIndent()
+    }
+
+    @Test
+    fun `should encode optional server info in result metadata`() {
+        val result = DiscoverResult(
+            supportedVersions = listOf("2026-07-28"),
+            capabilities = ServerCapabilities(),
+            meta = Json.parseToJsonElement(
+                """
+                {
+                  "io.modelcontextprotocol/serverInfo": {
+                    "name": "test-server",
+                    "version": "2.0.0"
+                  },
+                  "com.example/source": "edge"
+                }
+                """.trimIndent(),
+            ).jsonObject,
+        )
+
+        McpJson.encodeToString<ServerResult>(result) shouldEqualJson """
+            {
+              "supportedVersions": ["2026-07-28"],
+              "capabilities": {},
+              "resultType": "complete",
+              "ttlMs": 0,
+              "cacheScope": "private",
+              "_meta": {
+                "io.modelcontextprotocol/serverInfo": {
+                  "name": "test-server",
+                  "version": "2.0.0"
+                },
+                "com.example/source": "edge"
+              }
+            }
+        """.trimIndent()
+        assertEquals(
+            Json.parseToJsonElement("""{"name":"test-server","version":"2.0.0"}"""),
+            result.meta?.get("io.modelcontextprotocol/serverInfo"),
+        )
+    }
+
+    @Test
+    fun `should encode required defaults independently of McpJson`() {
+        val result = DiscoverResult(
+            supportedVersions = listOf("2026-07-28"),
+            capabilities = ServerCapabilities(),
+        )
+
+        Json.encodeToString(result) shouldEqualJson """
+            {
+              "supportedVersions": ["2026-07-28"],
+              "capabilities": {},
+              "resultType": "complete",
+              "ttlMs": 0,
+              "cacheScope": "private"
+            }
+        """.trimIndent()
+    }
+
+    @Test
+    fun `should reject discovery results without required cache fields`() {
+        val invalidResults = listOf(
+            """
+            {
+              "supportedVersions": ["2026-07-28"],
+              "capabilities": {},
+              "cacheScope": "private"
+            }
+            """.trimIndent(),
+            """
+            {
+              "supportedVersions": ["2026-07-28"],
+              "capabilities": {},
+              "ttlMs": 0
+            }
+            """.trimIndent(),
+        )
+
+        invalidResults.forEach { wire ->
+            assertFails { McpJson.decodeFromString<DiscoverResult>(wire) }
+            assertFails { McpJson.decodeFromString<ServerResult>(wire) }
+        }
+    }
+
+    @Test
+    fun `should use complete when a discovery result omits resultType`() {
+        val result = McpJson.decodeFromString<ServerResult>(
+            """
+            {
+              "supportedVersions": ["2026-07-28"],
+              "capabilities": {},
+              "ttlMs": 0,
+              "cacheScope": "private"
+            }
+            """.trimIndent(),
+        )
+
+        assertEquals(COMPLETE_RESULT_TYPE, assertIs<DiscoverResult>(result).resultType)
+    }
+
+    @Test
+    fun `should deserialize discovery results polymorphically`() {
+        val wire =
+            """
+            {
+              "supportedVersions": ["2026-07-28"],
+              "capabilities": {},
+              "resultType": "complete",
+              "ttlMs": 250,
+              "cacheScope": "public",
+              "_meta": {
+                "io.modelcontextprotocol/serverInfo": {
+                  "name": "server",
+                  "version": "1"
+                },
+                "com.example/source": "edge"
+              }
+            }
+            """.trimIndent()
+        val result = McpJson.decodeFromString<ServerResult>(wire)
+
+        val discover = assertIs<DiscoverResult>(result)
+        assertEquals(250, discover.ttlMs)
+        assertEquals(CacheScope.Public, discover.cacheScope)
+        assertEquals(
+            Json.parseToJsonElement("""{"name":"server","version":"1"}"""),
+            discover.meta?.get("io.modelcontextprotocol/serverInfo"),
+        )
+        assertNotNull(discover.meta?.get("com.example/source"))
+        McpJson.encodeToString<ServerResult>(discover) shouldEqualJson wire
+    }
+
+    @Test
+    fun `should not treat supportedVersions alone as a discovery discriminator`() {
+        val result = McpJson.decodeFromString<ServerResult>(
+            """
+            {
+              "tools": [],
+              "supportedVersions": ["extension-value"]
+            }
+            """.trimIndent(),
+        )
+
+        assertIs<ListToolsResult>(result)
+    }
+
+    @Test
+    fun `should not treat an initialize extension as a discovery result`() {
+        val result = McpJson.decodeFromString<ServerResult>(
+            """
+            {
+              "protocolVersion": "2025-06-18",
+              "capabilities": {},
+              "serverInfo": {
+                "name": "test-server",
+                "version": "1.0.0"
+              },
+              "supportedVersions": ["extension-value"]
+            }
+            """.trimIndent(),
+        )
+
+        assertIs<InitializeResult>(result)
+    }
+
+    @Test
+    fun `should reject a negative discovery ttl`() {
+        assertFailsWith<IllegalArgumentException> {
+            DiscoverResult(
+                supportedVersions = listOf("2026-07-28"),
+                capabilities = ServerCapabilities(),
+                ttlMs = -1,
+            )
+        }
+    }
+
+    @Test
+    fun `unsupported version data should round trip without losing versions`() {
+        val data = UnsupportedProtocolVersionData(
+            supported = listOf("2026-07-28", "2025-11-25"),
+            requested = "2099-01-01",
+        )
+
+        val encoded = McpJson.encodeToString(data)
+        assertEquals(data, McpJson.decodeFromString(encoded))
+        assertEquals(-32022, RPCError.ErrorCode.UNSUPPORTED_PROTOCOL_VERSION)
+    }
+}