chore(deps): support MCP 2 and preserve SDK 1 compatibility - #43
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Updates the requirements on [mcp](https://github.com/modelcontextprotocol/python-sdk) to permit the latest version. - [Release notes](https://github.com/modelcontextprotocol/python-sdk/releases) - [Changelog](https://github.com/modelcontextprotocol/python-sdk/blob/main/RELEASE.md) - [Commits](modelcontextprotocol/python-sdk@v1.28.0...v2.1.1) --- updated-dependencies: - dependency-name: mcp dependency-version: 2.1.1 dependency-type: direct:production ... Signed-off-by: dependabot[bot] <support@github.com>
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abrichr
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MCP 2 removes the low-level decorators that this server uses, so widening the dependency range alone prevents Agent from starting. This change supports
mcp>=1.28,<3through the SDK 1 decorators and SDK 2 constructor handlers. Both paths use the same tool dispatch, explicit input-schema checks, andCallToolResultresponses. Validation errors don't expose argument values.Operator confirmation still precedes every attended decision. The server uses the request's actual context and refuses when the client cannot complete form elicitation. SDK 2 clients need
mode="legacy"for attended decisions; the newer discovery protocol has no server-initiated confirmation channel. Discovery, authoring tools, and governed workflow execution remain available. Upstream migration guide.The tests now connect real SDK client/server sessions instead of invoking private handler dictionaries. They cover tool schemas and annotations, successful reads, every attended decision with accept/decline/cancel responses, malformed arguments, protected exception text, modern discovery refusal, and the CLI's stdio transport. A run-tool test invokes the installed Flow CLI and confirms its admission refusal for an unsigned synthetic bundle.
Validation:
uv lock --locked, wheel/sdist builds, and all package/source-boundary checks pass. The refreshed lock selects MCP 2.2.0.CI retains three jobs and tests the SDK 1 floor, SDK 2 floor, and current allowed dependencies. This PR does not create a package release or change an admission.