Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx agentmods add skills/getsentry/xcodebuildmcp/xcodebuildmcp-tool-contract-reviewnpx skills add getsentry/XcodeBuildMCP --skill xcodebuildmcp-tool-contract-reviewgit clone --depth 1 https://github.com/getsentry/XcodeBuildMCPWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/getsentry/xcodebuildmcp/xcodebuildmcp-tool-contract-review)<a href="https://agentmods.dev/skills/getsentry/xcodebuildmcp/xcodebuildmcp-tool-contract-review"><img src="https://agentmods.dev/badge/skills/getsentry/xcodebuildmcp/xcodebuildmcp-tool-contract-review.svg" alt="Measured on agentmods" height="20"></a>What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5 | $0.00037 | $0.00367 |
| Opus 5 | $0.00018 | $0.00183 |
| Sonnet 5 | $0.00007 | $0.00073 |
| Haiku 4.5 | $0.00004 | $0.00037 |
Grade A, and why
xcodebuildmcp-tool-contract-review scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 3d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
What it actually says
XcodeBuildMCP 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/*.yamlmanifests/workflows/*.yamlsrc/core/manifest/schema.tssrc/runtime/tool-catalog.tssrc/runtime/types.tsxcodebuildmcp.com/app/docs/_content/tool-authoring.mdxxcodebuildmcp.com/app/docs/_content/architecture-manifest-visibility.mdx
Guardrails
- Manifest
idmatches filename. - Manifest
modulepoints to implementation path without extension. - Tool module exports named
schemaandhandler. names.mcpremains globally unique.names.clistays workflow-local and consistent with CLI docs/fixtures.- Tool appears in at least one workflow unless intentionally hidden by availability.
outputSchemais present for tools that setctx.structuredOutput.nextSteps.toolIdreferences existing manifest tool IDs.- Avoid parallel legacy paths or duplicate implementation paths.
Validation
npm run typechecknpm test -- src/core/manifest/__tests__/schema.test.tsnpm test -- src/runtime/__tests__/tool-invoker.test.tsnpx skill-check .agents/skills/xcodebuildmcp-tool-contract-review
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 3d ago First seen · 44 lines · 37 tokens per session scan A 5b596ed25e2e
xcodebuildmcp-tool-contract-review is a skill published in the GitHub repository getsentry/XcodeBuildMCP (6,321 stars, last pushed 2d ago), licensed MIT. It adds 37 tokens to every session and 367 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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