* Initial plan
* Add Description property to Implementation type
Co-authored-by: stephentoub <2642209+stephentoub@users.noreply.github.com>
* Add test to validate client Description from server perspective
Co-authored-by: stephentoub <2642209+stephentoub@users.noreply.github.com>
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Co-authored-by: stephentoub <2642209+stephentoub@users.noreply.github.com>
Co-authored-by: Stephen Toub <stoub@microsoft.com>
* Initial plan
* Update documentation to clarify error handling per SEP-1303
- Updated McpErrorCode.InvalidParams documentation to clarify it's for protocol-level errors (malformed requests, unknown primitives)
- Updated CallToolResult documentation to distinguish between tool execution errors and protocol errors
- Updated McpProtocolException documentation to emphasize it's only for protocol-level errors
- Added test to verify input validation errors are returned as tool execution errors (IsError=true)
- Implementation already correctly handles input validation as tool execution errors per SEP-1303
Co-authored-by: stephentoub <2642209+stephentoub@users.noreply.github.com>
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Co-authored-by: stephentoub <2642209+stephentoub@users.noreply.github.com>
* Ignore unexpected properties when deserializing a ContentBlock
* Fix deserialization of Reference.Title and more bugs for unknown props
* Remove comments about skipping additional properties
Rather than always serializing to a JsonElement, which IChatClients that consume the tool won't be able to reason about, convert the content into AIContents that they can reason about.
* Initial plan
* Add SEP-1034 support for default values in all primitive schema types
Co-authored-by: eiriktsarpalis <2813363+eiriktsarpalis@users.noreply.github.com>
* Address PR feedback: convert if-else to switch and add default value mapping tests
Co-authored-by: eiriktsarpalis <2813363+eiriktsarpalis@users.noreply.github.com>
* Remove default value extraction code and linker annotations per feedback
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* Use literal true/false values instead of GetBoolean() call
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* Reinstate tests and fix CreatePrimitiveSchema to extract defaults from AttributeProvider
Co-authored-by: eiriktsarpalis <2813363+eiriktsarpalis@users.noreply.github.com>
* Remove manual default extraction and update test to use positional record
Removed the manual default value extraction code from BuildRequestSchema
and SetDefaultValue helper as this should be handled by AIJsonUtilities.
Updated FormWithDefaults to be a positional record with optional parameters.
Test is now skipped until AIJsonUtilities supports extracting defaults from
optional parameters.
Co-authored-by: eiriktsarpalis <2813363+eiriktsarpalis@users.noreply.github.com>
* Use 'is not null' pattern for consistency with nullable checks
Co-authored-by: eiriktsarpalis <2813363+eiriktsarpalis@users.noreply.github.com>
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Co-authored-by: eiriktsarpalis <2813363+eiriktsarpalis@users.noreply.github.com>
* Initial plan
* Add McpMetaAttribute and integrate with tools, prompts, and resources
Co-authored-by: stephentoub <2642209+stephentoub@users.noreply.github.com>
* Add tests and sample usage for McpMetaAttribute
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* Add Meta property to options classes and update logic to merge with attributes
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* Fix missing using directives and clarify McpMetaAttribute documentation
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* Make Name and Value constructor parameters in McpMetaAttribute and check AIFunction.Metadata.UnderlyingMethod
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* Change Value type to object and use JsonSerializer.SerializeToNode, fix nullable warnings
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* Fix UnderlyingMethod property path, use SerializerOptions, and fix JsonObject cref
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* Simplify MethodInfo resolution to use function.UnderlyingMethod directly
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* Fix IL2026 trimming warning by providing type info to JsonSerializer.SerializeToNode
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* Fix remaining issues
* Revert to string-based JSON values for McpMetaAttribute with StringSyntax annotation
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* Add StringSyntax attribute to Value property and fix sample code to use escaped quotes
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* Fix tests and a bit of cleanup
* Change approach and add lots of tests
* Use JsonContext for serialization and fix floating point test comparison
Co-authored-by: stephentoub <2642209+stephentoub@users.noreply.github.com>
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Co-authored-by: Stephen Toub <stoub@microsoft.com>
* Initial plan
* Allow handlers for empty tool/prompt/resource collections
Changed condition from `IsEmpty: false` to `not null` check in McpServerImpl.cs for resources (line 298), prompts (line 459), and tools (line 547). This allows handlers to be synthesized even when collections are empty, enabling dynamic addition of items after initialization.
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* Fix support for sending server notifications with request-specific McpServer instances used outside their original scope.
* Address feedback.
* Update src/ModelContextProtocol.Core/Server/SseWriter.cs
- This removes the requirement to configure data protection which is the motivating reason for this change
- This means that McpServer.ClientInfo will always be null in stateless mode
* Fix stdio client transport CLI argument escaping.
* Fix failing Windows test.
* Add more test cases and refine escaping logic.
* Fix test failures in mono
* Style fixes
* Tweak stdio test
* Tweak tests further
* Decouple Handlers and Collections (e.g. ToolsHandler and ToolsCollection) from Capabilities by promoting them to the options types.
Also, group all handlers in container classes, for server, I decided to move McpServerHandlers down to Mcp.Core and move the NotificationHandlers there too.
Also, Fix ListResourceTemplatesHandler issue.
* Add remarks for empty protocol capability types
* Keep JsonIgnore properties and mark them as Obsolete
* Continue supporting Obsolete members
* Update Obsolete messages to indicate the member will be removed
* Add EditorBrowsable Never to the remaining obsolete members
