feat: Add MCP service client for RFC-006/RFC-007 operations#21
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- Add MCP service client methods to _rpc/client.py - Add mcp_pb2 imports to gen/__init__.py - Update protobuf generated files for MCP service - Add docs/guides/mcp.md guide - Add integration tests for MCP service - Update API reference and mkdocs nav
- Add Generator return type annotation to start_badge_keeper in badge.py - Add Generator return type annotation to start_keeper in client.py - Fix Google-style docstring format for Yields section - Configure mkdocstrings options for better compatibility
These files were ignored by .gitignore but are required for MCP service support.
The test_mcp_service.py tests require capiscio-core gRPC server running on localhost:50051, which is not set up in the Docker Compose integration test environment. These tests are better suited for E2E testing with full infrastructure.
The previous mcp.md documented a high-level capiscio_sdk.mcp API that doesn't exist. The SDK only provides the low-level gRPC MCPClient via _rpc.client. Changes: - Rewrite mcp.md to document the actual MCPClient gRPC methods - Add note directing users to capiscio-mcp-python for high-level API - Update mkdocs nav title from 'MCP Security' to 'MCP Service (gRPC)' Addresses PR review feedback about documentation/API mismatch.
Signed-off-by: Beon de Nood <77057717+beonde@users.noreply.github.com>
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Pull request overview
This PR adds the MCPClient to the Python SDK for MCP security operations via capiscio-core gRPC, implementing RFC-006 (Tool Authority) and RFC-007 (Server Identity) operations.
Changes:
- Adds new
MCPClientclass with methods for tool access evaluation, server identity verification, and identity parsing from HTTP/JSON-RPC transports - Includes comprehensive integration tests (377 lines) covering all MCP operations and edge cases
- Adds detailed documentation guide and API reference updates for the new MCP service client
Reviewed changes
Copilot reviewed 2 out of 2 changed files in this pull request and generated no comments.
Show a summary per file
| File | Description |
|---|---|
capiscio_sdk/_rpc/client.py |
Implements MCPClient with 5 methods for RFC-006/RFC-007 operations, integrates with CapiscioRPCClient |
capiscio_sdk/_rpc/gen/capiscio/v1/mcp_pb2.py |
Generated protobuf Python bindings for MCP service messages |
capiscio_sdk/_rpc/gen/capiscio/v1/mcp_pb2_grpc.py |
Generated gRPC stub for MCPService with 4 RPC methods |
capiscio_sdk/_rpc/gen/capiscio/v1/__init__.py |
Adds MCP protobuf imports to module exports |
capiscio_sdk/_rpc/gen/capiscio/v1/*_pb2.py |
Updates protobuf version from 6.33.2 to 6.33.4 across existing files |
capiscio_sdk/badge.py |
Adds Generator type hint to start_badge_keeper return type |
tests/integration/test_mcp_service.py |
Comprehensive integration tests for all MCP operations with 6 test classes |
docs/guides/mcp.md |
New 283-line guide documenting MCPClient low-level gRPC API usage |
docs/api-reference.md |
Adds API documentation sections for MCPClient and other RPC clients |
mkdocs.yml |
Adds MCP guide to navigation and updates mkdocstrings configuration |
.github/workflows/integration-tests.yml |
Excludes MCP integration tests from CI (requires running gRPC server) |
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✅ Documentation validation passed!
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✅ All checks passed! Ready for review. |
Codecov Report✅ All modified and coverable lines are covered by tests. 📢 Thoughts on this report? Let us know! |
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Summary
Adds
MCPClientto the Python SDK for MCP security operations via capiscio-core gRPC.Changes
New Features
MCPClientincapiscio_sdk._rpc.clientwith methods:evaluate_tool_access()- RFC-006 §6.2-6.4: Evaluate tool access and emit evidenceverify_server_identity()- RFC-007 §7.2: Verify server identity from DID + badgeparse_server_identity_http()- RFC-007 §5.2: Extract identity from HTTP headersparse_server_identity_jsonrpc()- RFC-007 §5.3: Extract identity from JSON-RPC _metahealth()- Service health and version checkGenerated protobuf stubs for MCP service (
mcp_pb2.py,mcp_pb2_grpc.py)Documentation
docs/guides/mcp.mddocumenting the low-level gRPC MCPClient APIapi-reference.mdwith MCPClient API documentationcapiscio-mcp-pythonfor high-level decoratorsTests
tests/integration/test_mcp_service.py)RFC References
Related PRs
Testing