MobileBuildMCP Tool Contract Review

Review guardrails for tool contract changes across implementation, manifests, and workflow exposure.

Review scope

• Review-only by default.
• Do not edit product code unless the user explicitly requests implementation changes.

Files to inspect

• src/mcp/tools/**
• manifests/tools/*.yaml
• manifests/workflows/*.yaml
• src/core/manifest/schema.ts
• src/runtime/tool-catalog.ts
• src/runtime/types.ts
• xcodebuildmcp.com/app/docs/_content/tool-authoring.mdx
• xcodebuildmcp.com/app/docs/_content/architecture-manifest-visibility.mdx

Guardrails

• Manifest id matches filename.
• Manifest module points to implementation path without extension.
• Tool module exports named schema and handler.
• names.mcp remains globally unique.
• names.cli stays workflow-local and consistent with CLI docs/fixtures.
• Tool appears in at least one workflow unless intentionally hidden by availability.
• outputSchema is present for tools that set ctx.structuredOutput.
• nextSteps.toolId references existing manifest tool IDs.
• Avoid parallel legacy paths or duplicate implementation paths.

Validation

• npm run typecheck
• npm test -- src/core/manifest/__tests__/schema.test.ts
• npm test -- src/runtime/__tests__/tool-invoker.test.ts
• npx skill-check .agents/skills/mobilebuildmcp-tool-contract-review