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ffec8947d3Bumps [io.ktor:ktor-bom](https://github.com/ktorio/ktor) from 3.5.1 to 3.5.2. <details> <summary>Release notes</summary> <p><em>Sourced from <a href="https://github.com/ktorio/ktor/releases">io.ktor:ktor-bom's releases</a>.</em></p> <blockquote> <h2>3.5.2</h2> <blockquote> <p>Published 31 July 2026</p> </blockquote> <h3>Improvements</h3> <ul> <li><a href="https://youtrack.jetbrains.com/issue/KTOR-8032">KTOR-8032</a> RateLimit: Allow limit requests based on authentication result</li> <li><a href="https://youtrack.jetbrains.com/issue/KTOR-9719">KTOR-9719</a> <code>ApplicationCall.isStaticContent</code> returns false when called from plugin interceptors</li> <li><a href="https://youtrack.jetbrains.com/issue/KTOR-8450">KTOR-8450</a> ContentNegotiation: it doesn't handle content type suffixes</li> <li><a href="https://youtrack.jetbrains.com/issue/KTOR-7892">KTOR-7892</a> SwaggerUI: Missing oauth2-redirect.html support in the plugin</li> <li><a href="https://youtrack.jetbrains.com/issue/KTOR-9759">KTOR-9759</a> Reject whitespace in URL hosts during parsing</li> <li><a href="https://youtrack.jetbrains.com/issue/KTOR-9681">KTOR-9681</a> Update kotlinx-io to 0.9.1</li> <li><a href="https://youtrack.jetbrains.com/issue/KTOR-9743">KTOR-9743</a> ByteReadChannel.readLineStrict: Misleading definition of limit parameter in KDocs</li> <li><a href="https://youtrack.jetbrains.com/issue/KTOR-9504">KTOR-9504</a> Improve KDoc for EmbeddedServer.addShutdownHook</li> </ul> <h3>Bugfixes</h3> <ul> <li><a href="https://youtrack.jetbrains.com/issue/KTOR-9741">KTOR-9741</a> CIO: request-handler coroutine leak on half-closed idle connection after ≥1MB response</li> <li><a href="https://youtrack.jetbrains.com/issue/KTOR-7661">KTOR-7661</a> Maven + YAML config file does not work</li> <li><a href="https://youtrack.jetbrains.com/issue/KTOR-9585">KTOR-9585</a> OpenAPI: JsonSchema title is truncated when it contains a dot</li> <li><a href="https://youtrack.jetbrains.com/issue/KTOR-9704">KTOR-9704</a> UTF-8 encoding in ktor-io bypasses JVM String.getBytes intrinsics, slowing every text response by 5-7x</li> <li><a href="https://youtrack.jetbrains.com/issue/KTOR-9588">KTOR-9588</a> SSE client (CIO engine) sends spurious <code>Content-Length: 0</code> on body-less GET (RFC 9110 § 8.6 violation; rejected by AWS ELB)</li> <li><a href="https://youtrack.jetbrains.com/issue/KTOR-9679">KTOR-9679</a> ByteReadChannel.readLine corrupts multi-byte UTF-8 by splitting a character at a buffer boundary</li> <li><a href="https://youtrack.jetbrains.com/issue/KTOR-9767">KTOR-9767</a> ByteReadChannel.readLineTo: Return read bytes count instead of decoded characters count <a href="#"><img src="https://img.shields.io/badge/%5BImpactful%20change%5D-orange?style=flat-square" alt="" /></a></li> <li><a href="https://youtrack.jetbrains.com/issue/KTOR-8992">KTOR-8992</a> HoconConfigLoader is not loaded when ktor-server-config-yaml on the classpath</li> <li><a href="https://youtrack.jetbrains.com/issue/KTOR-9698">KTOR-9698</a> OpenAPI: schema for kotlinx.serialization sealed types omits discriminator property in variant schemas</li> <li><a href="https://youtrack.jetbrains.com/issue/KTOR-9690">KTOR-9690</a> Netty: in-flight requests are aborted on stop(), ignoring shutdown grace period</li> <li><a href="https://youtrack.jetbrains.com/issue/KTOR-8903">KTOR-8903</a> Netty: Close channel connection on errors properly</li> <li><a href="https://youtrack.jetbrains.com/issue/KTOR-9707">KTOR-9707</a> SaveBody performance regression</li> <li><a href="https://youtrack.jetbrains.com/issue/KTOR-9703">KTOR-9703</a> Inefficient text reading function in DefaultTransform</li> <li><a href="https://youtrack.jetbrains.com/issue/KTOR-9711">KTOR-9711</a> Netty HTTP/2: a single client-canceled stream (RST_STREAM) breaks response flushing for the whole connection</li> <li><a href="https://youtrack.jetbrains.com/issue/KTOR-9688">KTOR-9688</a> RateLimit: No access to principal when wrapped with authentication since 3.5.1</li> <li><a href="https://youtrack.jetbrains.com/issue/KTOR-9677">KTOR-9677</a> Auto-reloading: server is reloaded only once since 3.5.0</li> <li><a href="https://youtrack.jetbrains.com/issue/KTOR-9683">KTOR-9683</a> Sockets: Canceling a SelectorManager job doesn't close it properly</li> <li><a href="https://youtrack.jetbrains.com/issue/KTOR-9671">KTOR-9671</a> Darwin: Semicolons in URL path are sanitized</li> </ul> </blockquote> </details> <details> <summary>Changelog</summary> <p><em>Sourced from <a href="https://github.com/ktorio/ktor/blob/main/CHANGELOG.md">io.ktor:ktor-bom's changelog</a>.</em></p> <blockquote> <h1>3.5.2</h1> <blockquote> <p>Published 31 July 2026</p> </blockquote> <h3>Improvements</h3> <ul> <li><a href="https://youtrack.jetbrains.com/issue/KTOR-8032">KTOR-8032</a> RateLimit: Allow limit requests based on authentication result</li> <li><a href="https://youtrack.jetbrains.com/issue/KTOR-9719">KTOR-9719</a> <code>ApplicationCall.isStaticContent</code> returns false when called from plugin interceptors</li> <li><a href="https://youtrack.jetbrains.com/issue/KTOR-8450">KTOR-8450</a> ContentNegotiation: it doesn't handle content type suffixes</li> <li><a href="https://youtrack.jetbrains.com/issue/KTOR-7892">KTOR-7892</a> SwaggerUI: Missing oauth2-redirect.html support in the plugin</li> <li><a href="https://youtrack.jetbrains.com/issue/KTOR-9759">KTOR-9759</a> Reject whitespace in URL hosts during parsing</li> <li><a href="https://youtrack.jetbrains.com/issue/KTOR-9681">KTOR-9681</a> Update kotlinx-io to 0.9.1</li> <li><a href="https://youtrack.jetbrains.com/issue/KTOR-9743">KTOR-9743</a> ByteReadChannel.readLineStrict: Misleading definition of limit parameter in KDocs</li> <li><a href="https://youtrack.jetbrains.com/issue/KTOR-9504">KTOR-9504</a> Improve KDoc for EmbeddedServer.addShutdownHook</li> </ul> <h3>Bugfixes</h3> <ul> <li><a href="https://youtrack.jetbrains.com/issue/KTOR-9741">KTOR-9741</a> CIO: request-handler coroutine leak on half-closed idle connection after ≥1MB response</li> <li><a href="https://youtrack.jetbrains.com/issue/KTOR-7661">KTOR-7661</a> Maven + YAML config file does not work</li> <li><a href="https://youtrack.jetbrains.com/issue/KTOR-9585">KTOR-9585</a> OpenAPI: JsonSchema title is truncated when it contains a dot</li> <li><a href="https://youtrack.jetbrains.com/issue/KTOR-9704">KTOR-9704</a> UTF-8 encoding in ktor-io bypasses JVM String.getBytes intrinsics, slowing every text response by 5-7x</li> <li><a href="https://youtrack.jetbrains.com/issue/KTOR-9588">KTOR-9588</a> SSE client (CIO engine) sends spurious <code>Content-Length: 0</code> on body-less GET (RFC 9110 § 8.6 violation; rejected by AWS ELB)</li> <li><a href="https://youtrack.jetbrains.com/issue/KTOR-9679">KTOR-9679</a> ByteReadChannel.readLine corrupts multi-byte UTF-8 by splitting a character at a buffer boundary</li> <li><a href="https://youtrack.jetbrains.com/issue/KTOR-9767">KTOR-9767</a> ByteReadChannel.readLineTo: Return read bytes count instead of decoded characters count <a href="#"><img src="https://img.shields.io/badge/%5BImpactful%20change%5D-orange?style=flat-square" alt="" /></a></li> <li><a href="https://youtrack.jetbrains.com/issue/KTOR-8992">KTOR-8992</a> HoconConfigLoader is not loaded when ktor-server-config-yaml on the classpath</li> <li><a href="https://youtrack.jetbrains.com/issue/KTOR-9698">KTOR-9698</a> OpenAPI: schema for kotlinx.serialization sealed types omits discriminator property in variant schemas</li> <li><a href="https://youtrack.jetbrains.com/issue/KTOR-9690">KTOR-9690</a> Netty: in-flight requests are aborted on stop(), ignoring shutdown grace period</li> <li><a href="https://youtrack.jetbrains.com/issue/KTOR-8903">KTOR-8903</a> Netty: Close channel connection on errors properly</li> <li><a href="https://youtrack.jetbrains.com/issue/KTOR-9707">KTOR-9707</a> SaveBody performance regression</li> <li><a href="https://youtrack.jetbrains.com/issue/KTOR-9703">KTOR-9703</a> Inefficient text reading function in DefaultTransform</li> <li><a href="https://youtrack.jetbrains.com/issue/KTOR-9711">KTOR-9711</a> Netty HTTP/2: a single client-canceled stream (RST_STREAM) breaks response flushing for the whole connection</li> <li><a href="https://youtrack.jetbrains.com/issue/KTOR-9688">KTOR-9688</a> RateLimit: No access to principal when wrapped with authentication since 3.5.1</li> <li><a href="https://youtrack.jetbrains.com/issue/KTOR-9677">KTOR-9677</a> Auto-reloading: server is reloaded only once since 3.5.0</li> <li><a href="https://youtrack.jetbrains.com/issue/KTOR-9683">KTOR-9683</a> Sockets: Canceling a SelectorManager job doesn't close it properly</li> <li><a href="https://youtrack.jetbrains.com/issue/KTOR-9671">KTOR-9671</a> Darwin: Semicolons in URL path are sanitized</li> </ul> </blockquote> </details> <details> <summary>Commits</summary> <ul> <li><a href=" |
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| gradle | ||
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| build.gradle.kts | ||
| gradle.properties | ||
| gradlew | ||
| gradlew.bat | ||
| README.md | ||
| settings.gradle.kts | ||
Kotlin MCP Client
An interactive CLI client that connects to any MCP server over STDIO and pipes queries through Anthropic's Claude API.
Overview
This sample demonstrates a complete MCP client workflow: launching an MCP server as a subprocess, discovering its tools, converting them to Anthropic's tool format, and running an interactive chat loop where Claude can call server tools on behalf of the user.
Prerequisites
- JDK 17+
- An
ANTHROPIC_API_KEYenvironment variable set with a valid Anthropic API key - An MCP server script to connect to (
.js,.py, or.jar)
Build & Run
Run the client, passing the path to an MCP server:
# Connect to a JVM server
./gradlew run --args="path/to/server.jar"
# Connect to a Python server
./gradlew run --args="path/to/server.py"
# Connect to a Node.js server
./gradlew run --args="path/to/build/index.js"
Note
The client uses STDIO transport, so it launches the MCP server as a subprocess. Ensure the server script is executable and is a valid
.js,.py, or.jarfile.
MCP Capabilities
From the client perspective, this sample demonstrates:
- Tool discovery — lists tools from the connected server and converts them to Anthropic's tool format.
- Tool invocation — when Claude's response requests a tool call, the client invokes the corresponding MCP tool and feeds the result back into the conversation.