* feat!: add MRTR behavior support
* feat: harden SEP-2322 MRTR support
* ci: diff public API only on features common to base and head
cargo public-api builds both revisions with the same feature set, so a
feature introduced (or removed) by a PR broke the build of the other
revision. Restrict the all-features diff to features present in both the
base and head revisions.
* fix: address PR review - schema_for_output no longer validates or returns Result
- Add strip_output() that strips title/description without validating type (Dale #1)
- Change schema_for_output to return Arc<JsonObject> instead of Result (Dale #2)
- Cache only Arc<JsonObject> success values, not Result (Dale #3)
- Remove dead unwrap_or_else panic paths in with_output_schema, ToolBase, and macros
- Tighten test assertions from contains to assert_eq on type field (Dale #4)
- Update test_schema_for_output_rejects_primitive to accept_primitive (SEP-2106)
Co-authored-by: Orca <help@stably.ai>
* test(rmcp): add non-object output schema tests for SEP-2106
Add tests verifying schema_for_output accepts non-object types:
- test_tool_builder_methods: primitive (i32), array (Vec<String>), option
- test_structured_output: tool returning Json<Vec<T>> and Json<i32>
- test_json_schema_detection: Json<Vec<T>>, Result<Json<Vec<T>>,E>, Json<String>
- tool_traits: ToolBase::output_schema with Vec<AddOutput> output type
* test(rmcp): add missing edge case tests from code review
Add tests identified during code review:
- description stripping for primitive types
- composition types (Option<String> with anyOf/oneOf/null)
- cache correctness (Arc::ptr_eq for repeated calls)
- schema_for_input rejecting array types (not just primitives)
- schema_for_output accepting unit type ()
* feat!: mark schema_for_output return-type change as breaking
This introduces SEP-2106: schema_for_output no longer validates or
returns Result. The public signature changed, so bump major.
* fix: address Dale's PR review - direct schema.get assertions, remove ArrayTool
- Replace loose schema_str.contains(...) assertions with direct
schema.get("type") equality checks in test_tool_builder_methods.rs
and test_structured_output.rs
- Remove redundant ArrayTool fixture and its round-trip
serde_json::from_str test from tool_traits.rs since schema is
already Arc<JsonObject>
- Drop dead schema_str variable in test_structured_output.rs
---------
Co-authored-by: Brandon Bennett <brandonbennett@macbookair.myfiosgateway.com>
Co-authored-by: Orca <help@stably.ai>
Co-authored-by: Brandon Bennett <brandonbennett@Pursuits-Air.lan>
* feat(macros): auto-generate get_info and default router
* docs: simplify examples and docs with new defaults
* feat(macros): add tool_router(server_handler) to elide separate #[tool_handler] impl
* docs: add Tools section to README and simplify calculator examples with server_handler
* fix(rmcp-macros): use re-exported serde_json path in task_handler
Replace bare `::serde_json::` with `::rmcp::serde_json::` in
task_handler.rs to prevent compilation errors in crates that don't
directly depend on serde_json.
Fixes#487
* Update crates/rmcp-macros/src/task_handler.rs
---------
Co-authored-by: Dale Seo <5466341+DaleSeo@users.noreply.github.com>
The `#[task_handler]` macro generates code using deprecated type aliases
(`PaginatedRequestParam`, `CallToolRequestParam`, `GetTaskInfoParam`,
`GetTaskResultParam`, `CancelTaskParam`) that were renamed to `*Params`
in rmcp 0.13.0. This causes 5 deprecation warnings for every crate
using the macro.
Update all references to use the canonical `*Params` names:
- `PaginatedRequestParam` → `PaginatedRequestParams`
- `CallToolRequestParam` → `CallToolRequestParams`
- `GetTaskInfoParam` → `GetTaskInfoParams`
- `GetTaskResultParam` → `GetTaskResultParams`
- `CancelTaskParam` → `CancelTaskParams`
Also fix the corresponding doc examples in `lib.rs`.
Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>
* fix: builder with_* methods take T instead of Option<T>
* fix: emit conditional builder calls for optional fields in macros
* fix: convert with_task, with_stop_reason, with_logger, with_content to proper builders
* fix: update test callers for new builder signatures
* fix: simplify make_task helper and remove unused import
* fix: update sampling_stdio example for new with_stop_reason signature
* fix: make annotations and execution Option<Expr> consistent with other fields
* fix: remove unused none_expr import
Use `#![doc = include_str!("../README.md")]` to display README as crate
documentation on docs.rs for both `rmcp` and `rmcp-macros`.
Changes to support this:
- Fix code examples to compile as doc tests (`rust,no_run`)
- Fix broken rustdoc links with explicit `crate::` paths
- Add "Structured Output" section and examples link to rmcp README
- Simplify rmcp-macros README to a summary table with doc links
- Fix grammar throughout
- Add CSS to hide GitHub badges when rendered as rustdoc
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-authored-by: Claude Opus 4.5 <noreply@anthropic.com>
* feat: implement SEP-1319 Decouple Request Payload from RPC Methods
* test: update tests
* fix: update handler trait methods to use new types
* fix: update examples
* fix: correct deprecation version
* fix: update wrapper macros to use new *Params type names
This change makes the `tool` macro's output safe for the `missing_docs` lint, by
emitting a doc comment for the generated `[tool]_tool_attr` function. This doc
comment is emitted regardless of whether the tool function is public, for simplicity.
We are building an MCP server using `rmcp` and discovered that the current crate
was not compatible with the `#![deny(missing_docs)]` lint which we use everywhere.
Tested by modifying the `test_tool_macros.rs` test to use `#![deny(missing_docs)]`
and adding doc comments to all pub fns and structs in that file.
None.
Fixes#438.
Co-authored-by: RobJellinghaus <rjellinghaus@live.com>
* fix(worker): correct typo in error message for transport cancellation
Signed-off-by: Jose Bovet Derpich <jose.bovet@gmail.com>
* doc(typo): correct typo in field header for tool and tool_router usage sections
Signed-off-by: Jose Bovet Derpich <jose.bovet@gmail.com>
---------
Signed-off-by: Jose Bovet Derpich <jose.bovet@gmail.com>
`#[tool]` generates code that uses Future by name for async functions.
This means that consumers have to import Future. This commit fixes that
by changing the macro expansion to use std::future::Future instead.
The same applies to `#[prompt]` as well.
* feat: add prompt support with typed argument handling
- Implement #[prompt], #[prompt_router], and #[prompt_handler] macros
- Add automatic JSON schema generation from Rust types for arguments
- Support flexible async handler signatures with automatic adaptation
- Create PromptRouter for efficient prompt dispatch
- Include comprehensive tests and example implementation
This enables MCP servers to provide reusable prompt templates that
LLMs can discover and invoke with strongly-typed parameters, similar
to the existing tool system but optimized for prompt use cases.
🤖 Generated with Claude Code
Co-Authored-By: Claude <noreply@anthropic.com>
* refactor: unify parameter handling between tools and prompts
- Replace Arguments<T> with Parameters<T> for consistent API
- Create shared common module for tool/prompt utilities
- Modernize async handling with futures::future::BoxFuture
- Move cached_schema_for_type to common module for reuse
- Update error types from rmcp::Error to rmcp::ErrorData
- Add comprehensive trait implementations for parameter extraction
🤖 Generated with Claude Code
Co-Authored-By: Claude <noreply@anthropic.com>
* refactor: extract Parameters wrapper to shared module and unify trait usage
- Move Parameters type from common.rs to dedicated wrapper/parameters.rs module
- Unify extractor traits by using FromContextPart for both tools and prompts
- Remove duplicate FromToolCallContextPart and FromPromptContextPart traits
- Add structured output support to Json wrapper with IntoCallToolResult impl
- Improve error messages with more descriptive panic for schema serialization
- Update all imports across codebase to use new module path
- Clean up trailing whitespace and formatting inconsistencies
This consolidates parameter extraction logic and reduces code duplication
between tool and prompt handlers while maintaining backward compatibility.
* chore: remove committed .egg-info directory and update gitignore
* docs: fix documentation formatting
* feat: add output_schema field to Tool struct
- Add optional output_schema field to Tool struct for defining tool
output structure
- Update Tool::new() to initialize output_schema as None
* feat: add structured_content field to CallToolResult
- Add optional structured_content field for JSON object results
- Make content field optional to support either structured or
unstructured results
- Add CallToolResult::structured() and structured_error() constructor
methods
* feat: implement validation for mutually exclusive content/structuredContent
- Add validate() method to ensure content and structured_content are
mutually exclusive
- Implement custom Deserialize to enforce validation during
deserialization
- Update documentation to clarify the mutual exclusivity requirement
* feat: add output_schema support to #[tool] macro
- Add output_schema field to ToolAttribute and ResolvedToolAttribute
structs
- Implement automatic output schema generation from return types
- Support explicit output_schema attribute for manual specification
- Generate schemas for Result<T, E> where T is not CallToolResult
- Update tool generation to include output_schema in Tool struct
* feat: implement IntoCallToolResult for structured content
- Add Structured<T> wrapper type for explicit structured content
- Implement IntoCallToolResult for Structured<T> with JSON serialization
- Add support for Result<Structured<T>, E> conversions
- Enable tools to return structured content through the trait system
* fix: update simple-chat-client example for optional content field
- Handle Option<Vec<Content>> in CallToolResult.content
- Add proper unwrapping for the optional content field
- Fix compilation error in chat.rs
* fix: update examples and tests for optional content field
- Add output_schema field to Tool initialization in sampling_stdio
example
- Update test_tool_macros tests to handle Option<Vec<Content>>
- Use as_ref() before calling first() on optional content field
* feat: implement basic schema validation in conversion logic
- Add validate_against_schema function for basic type validation
- Add note that full JSON Schema validation requires dedicated library
- Document that actual validation should happen in tool handler
* feat: add structured output support for tools
- Add output_schema field to Tool struct for defining output JSON schemas
- Add structured_content field to CallToolResult (mutually exclusive with content)
- Implement Structured<T> wrapper for type-safe structured outputs
- Update #[tool] macro to automatically generate output schemas from return types
- Add validation of structured outputs against their schemas
- Update all examples and tests for breaking change (CallToolResult.content now Option)
- Add comprehensive documentation and rustdoc
- Add structured_output example demonstrating the feature
BREAKING CHANGE: CallToolResult.content is now Option<Vec<Content>> instead of Vec<Content>
Closes#312
* fix: correct structured output doctest to use Parameters wrapper
The #[tool] macro requires Parameters<T> wrapper for tool inputs.
This fixes the pre-existing broken doctest in the structured output
documentation example.
* feat: replace Structured<T> with Json<T> for structured output
- Remove Structured<T> type definition and implementations
- Reuse existing Json<T> wrapper for structured content
- Update IntoCallToolResult implementations to use Json<T>
- Add JsonSchema implementation for Json<T> delegating to T
- Update all examples and tests to use Json<T> instead of Structured<T>
- Update documentation and exports
BREAKING CHANGE: Structured<T> has been replaced with Json<T>. Users must update their code to use Json<T> for structured tool outputs.
* feat: add output_schema() method to IntoCallToolResult trait
- Add output_schema() method with default None implementation
- Implement output_schema() for Json<T> to return cached schema
- Implement output_schema() for Result<Json<T>, E> delegating to Json<T>
- Enable trait-based schema generation for structured outputs
* feat: update macro to detect Json<T> wrapper for output schemas
- Add extract_json_inner_type() helper to detect Json<T> types
- Update schema generation to only occur for Json<T> wrapped types
- Remove generic Result<T, E> detection in favor of specific Json<T> detection
- Add comprehensive tests to verify schema generation behavior
* feat: add builder methods to Tool struct for setting schemas
- Add with_output_schema<T>() method to set output schema from type
- Add with_input_schema<T>() method to set input schema from type
- Both methods use cached_schema_for_type internally
- Add comprehensive tests for builder methods
* fix: address clippy warnings
- Add Default implementation for StructuredOutputServer
- Fix collapsible else-if in simple-chat-client
- No functional changes
* style: apply cargo fmt
Apply automatic formatting changes to:
- examples/simple-chat-client/src/chat.rs - fix line wrapping
- crates/rmcp-macros/src/tool.rs - format method chaining
- examples/servers/src/structured_output.rs - reorder imports and format function signatures
* chore: fix formatting
* chore: fix rustdoc redundant link warning
* refactor: validate_against_schema
* feat: enforce structured_content usage when output_schema is defined
This commit implements strict validation to ensure tools with output_schema
consistently use structured_content for both success and error responses.
Changes:
- Enhanced ToolRouter::call() validation to require structured_content when output_schema is present
- Added validation that tools with output_schema cannot use regular content field
- Added comprehensive tests covering the new strict validation behavior
- Created example demonstrating proper structured output usage
- Updated TODO.md to track validation improvements
This ensures consistent response format and better type safety for MCP clients.
* chore: remove TODO.md
* refactor: simplify output schema extraction logic in tool macro
- Extract complex nested logic into dedicated helper function
- Replace deeply nested if-else chains with functional approach
- Use early returns and ? operator for cleaner code flow
- Reduce 46 lines to 7 lines in main logic while improving readability
* chore: run cargo fmt
* fix: enforce structured_content usage when output_schema is defined
Structured content is returned as a JSON object in the structuredContent
field of a result.For backwards compatibility, a tool that returns
structured content SHOULD also return the serialized JSON in a
TextContent block.
https://modelcontextprotocol.io/specification/2025-06-18/server/tools#structured-content
Tools may also provide an output schema for validation of structured
results. If an output schema is provided:
- Servers MUST provide structured results that conform to this schema.
- Clients SHOULD validate structured results against this schema.
https://modelcontextprotocol.io/specification/2025-06-18/server/tools#output-schema
* chore: cargo fmt
* refactor: refactor tool macros and router implementation
- Updated the `#[tool(tool_box)]` macro to `#[tool_router]` across various modules for consistency.
- Enhanced the `Calculator`, `Counter`, and `GenericService` structs to utilize `ToolRouter` for handling tool calls.
- Introduced `Parameters` struct for better parameter handling in tool functions.
- Added new methods for listing tools and calling tools in server handlers.
- Improved test cases to reflect changes in tool routing and parameter handling.
- Updated documentation and examples to align with the new router structure.
* fix: fix fmt and build error
* fix: fix test failure
* docs: documents for macros, fix ci
* fix: fix ci
* fix: fix wrongly replaced documents
* fix: remove useless file
* fix: change the parameter format for tool_router
* fix: update extract_doc_line to handle existing documentation and clean up unused code in server handler
* doc: update document for macro and examples
* doc: update readme and add contribute guide
* fix: fix type
1.Check whether the parameters include aggregated parameters and individual parameters
2.Check if the toolbox attribute is default
Signed-off-by: jokemanfire <hu.dingyang@zte.com.cn>
1. Suppot revision 2025-03-26 data types
2. Support meta, progress tokne, and extensions in request/notification,
3. Remove `Message`, use `JsonRpcMessage` directly
