## 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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