XcodeBuildMCP is an MCP server and command-line tool that gives coding agents tools for building and working on iOS and macOS projects. It supports workflows involving Xcode and xcodebuild, including project builds and device-related operations. Its catalogue add-ons provide agent instructions and connections for using the MCP server and CLI.
Borrowing it
Nothing to install: this file belongs to getsentry/XcodeBuildMCP. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/getsentry/XcodeBuildMCP/main/.agents/skills/warden-sweep/SKILL.mdgit 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/warden-sweep)<a href="https://agentmods.dev/skills/getsentry/xcodebuildmcp/warden-sweep"><img src="https://agentmods.dev/badge/skills/getsentry/xcodebuildmcp/warden-sweep/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/getsentry/xcodebuildmcp/warden-sweep"><img src="https://agentmods.dev/badge/skills/getsentry/xcodebuildmcp/warden-sweep.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector pass
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 5.1 | $0.00071 | $0.03261 |
| Opus 5.5 | $0.00028 | $0.01304 |
| Sonnet 5.5 | $0.00014 | $0.00652 |
| Haiku 4.5 | $0.00007 | $0.00326 |
Grade A, and why
warden-sweep 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 2mo 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.
How it starts
The opening of the file, as written. The whole thing — 401 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Warden Sweep
Full-repository code sweep: scan every file, verify findings with deep tracing, create draft PRs for validated issues.
Requires: warden, gh, git, jq, uv
Important: Run all scripts from the repository root using ${CLAUDE_SKILL_ROOT}. Output goes to .warden/sweeps/<run-id>/.
Bundled Scripts
scripts/scan.py
Runs setup and scan in one call: generates run ID, creates sweep dir, checks deps, creates warden label, enumerates files, runs warden per file, extracts findings.
uv run ${CLAUDE_SKILL_ROOT}/scripts/scan.py [file ...]
--sweep-dir DIR # Resume into existing sweep dir
scripts/index_prs.py
Fetches open warden-labeled PRs, builds file-to-PR dedup index, caches diffs for overlapping PRs.
uv run ${CLAUDE_SKILL_ROOT}/scripts/index_prs.py <sweep-dir>
scripts/create_issue.py
Creates a GitHub tracking issue summarizing sweep results. Run after verification, before patching.
uv run ${CLAUDE_SKILL_ROOT}/scripts/create_issue.py <sweep-dir>
scripts/organize.py
Tags security findings, labels security PRs, updates finding reports with PR links, posts final results to tracking issue, generates summary report, finalizes manifest.
uv run ${CLAUDE_SKILL_ROOT}/scripts/organize.py <sweep-dir>
scripts/extract_findings.py
Parses warden JSONL log files and extracts normalized findings. Called automatically by scan.py.
uv run ${CLAUDE_SKILL_ROOT}/scripts/extract_findings.py <log-path-or-directory> -o <output.jsonl>
scripts/generate_report.py
Builds summary.md and report.json from sweep data. Called automatically by organize.py.
uv run ${CLAUDE_SKILL_ROOT}/scripts/generate_report.py <sweep-dir>
scripts/find_reviewers.py
Finds top 2 git contributors for a file (last 12 months).
uv run ${CLAUDE_SKILL_ROOT}/scripts/find_reviewers.py <file-path>
Returns JSON: {"reviewers": ["user1", "user2"]}
What ships with it
10 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
- references/patch-prompt.md 2.6 KB
- references/verify-prompt.md 907 B
- scripts/_utils.py 2.7 KB runs code
- scripts/create_issue.py 5.7 KB runs code
- scripts/extract_findings.py 6.9 KB runs code
- scripts/find_reviewers.py 3.3 KB runs code
- scripts/generate_report.py 9.0 KB runs code
- scripts/index_prs.py 5.1 KB runs code
- scripts/organize.py 14 KB runs code
- scripts/scan.py 19 KB runs code
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.
- 2mo ago First seen · 401 lines · 71 tokens per session scan A c420431e44e6
warden-sweep is a skill published in the GitHub repository getsentry/XcodeBuildMCP (6,506 stars, last pushed 7d ago), licensed MIT. It adds 71 tokens to every session and 3,261 once invoked, about $0.0003 per session on Opus 5.5. 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.
Other skills, from other repositories
code-review
Reviews a supplied code path or diff for correctness, security, maintainability, and style without executing or modifying it.
reviewing-update-sets
Reviewing, analyzing, and comparing ServiceNow update sets before promotion, singly or in batches. Shows changes, risks, dependencies, and conflicts. Use when the user mentions update sets, customizations, promotion, code review, change tracking, pre-deployment review, sysupdatexml, customer updates, 'what changed in…
gitlab-review
Review a GitLab merge request, inspect changes and discussions, or prepare and post explicitly requested review feedback. Use for GitLab MRs and review follow-ups, not GitHub pull requests or automatic approval/merge.
pr-reviewer
Review a requested pull request, branch diff or completed task against its actual scope, source and checks. Prepare evidence and comments; post or record a human verdict only when explicitly authorized.
knowledge-audit
Review and clean up stored memories — find duplicates, contradictions, stale entries, and consolidate.
review-guidelines
Additional code review guidelines specific to this codebase. Auto-loaded by the review agent during PR reviews to enforce project conventions.