Support running MCP conformance tests against the Ruby SDK#248
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koic wants to merge 1 commit intomodelcontextprotocol:mainfrom
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Support running MCP conformance tests against the Ruby SDK#248koic wants to merge 1 commit intomodelcontextprotocol:mainfrom
koic wants to merge 1 commit intomodelcontextprotocol:mainfrom
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@modelcontextprotocol/ruby-sdk I'm currently working on conformance / tiering, and this PR provides functionality required for that effort. Issues identified during the development of this PR have been addressed in the following PRs. Once these PRs are resolved, the remaining When you have a moment, could you please help move the reviews forward?
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## Motivation To assess and track the Ruby SDK's compliance with the MCP specification, integrate `@modelcontextprotocol/conformance` as the standard evaluation harness. This makes it possible to measure conformance objectively, catch regressions early, and produce the kind of evaluation data needed for SDK tier assessments. ## Scope Only server conformance is included at this point. Client conformance requires protocol-level features that MCP::Client does not yet support (initialize handshake, notifications, ping, etc.). ## Usage Run conformance tests: ```console bundle exec rake conformance ``` Start the conformance server in the foreground for iterating on a single scenario without the per-run startup overhead: ```console bundle exec rake conformance_server ``` ## Default Rake Task (`bundle exec rake`) It is configured to run in order of lower execution cost: `rubocop`, `test`, and then `conformance`. ## CI `.github/workflows/conformance.yml` file has been added to run the conformance tests in CI. ## SDK Tier Report The MCP SDK Tier system (https://modelcontextprotocol.io/community/sdk-tiers) requires SDK maintainers to self-assess and report results to the SDK Working Group via https://github.com/modelcontextprotocol/modelcontextprotocol/issues. To generate a full tier assessment report, use the `/mcp-sdk-tier-audit` slash command from the https://github.com/modelcontextprotocol/conformance repository with the conformance server running: ```console # Terminal 1 (this repository): start the conformance server bundle exec rake conformance_server # Terminal 2 (conformance repository): run the tier audit skill as a slash command in Claude Code /mcp-sdk-tier-audit /path/to/modelcontextprotocol/ruby-sdk http://localhost:9292/mcp ``` The skill evaluates conformance pass rate, issue label taxonomy, triage metrics, documentation coverage, and policy compliance, then produces a markdown report suitable for tier advancement submissions.
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Motivation and Context
To assess and track the Ruby SDK's compliance with the MCP specification, integrate
@modelcontextprotocol/conformanceas the standard evaluation harness. This makes it possible to measure conformance objectively, catch regressions early, and produce the kind of evaluation data needed for SDK tier assessments.Scope
Only server conformance is included at this point. Client conformance requires protocol-level features that MCP::Client does not yet support (initialize handshake, notifications, ping, etc.).
Usage
Run conformance tests:
bundle exec rake conformanceStart the conformance server in the foreground for iterating on a single scenario without the per-run startup overhead:
bundle exec rake conformance_serverHow Has This Been Tested?
Default Rake Task (
bundle exec rake)It is configured to run in order of lower execution cost:
rubocop,test, and thenconformance.And
.github/workflows/conformance.ymlfile has been added to run the conformance tests in CI.Breaking Changes
None.
Types of changes
Checklist
Additional context
The MCP SDK Tier system (https://modelcontextprotocol.io/community/sdk-tiers) requires SDK maintainers to self-assess and report results to the SDK Working Group via https://github.com/modelcontextprotocol/modelcontextprotocol/issues.
To generate a full tier assessment report, use the
/mcp-sdk-tier-auditslash command from the https://github.com/modelcontextprotocol/conformance repository with the conformance server running:The skill evaluates conformance pass rate, issue label taxonomy, triage metrics, documentation coverage, and policy compliance, then produces a markdown report suitable for tier advancement submissions.