Borrowing it
Nothing to install: this file belongs to YanxReal/Xcode-MPC. 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/YanxReal/Xcode-MPC/main/AGENTS.mdgit clone --depth 1 https://github.com/YanxReal/Xcode-MPCWrote 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/instructions/yanxreal/xcode-mpc/agents-md)<a href="https://agentmods.dev/instructions/yanxreal/xcode-mpc/agents-md"><img src="https://agentmods.dev/badge/instructions/yanxreal/xcode-mpc/agents-md/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/instructions/yanxreal/xcode-mpc/agents-md"><img src="https://agentmods.dev/badge/instructions/yanxreal/xcode-mpc/agents-md.svg" alt="Reviewed on agentmods" width="80" 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 5.1 | $0.02107 | $0.02107 |
| Opus 5.5 | $0.00843 | $0.00843 |
| Sonnet 5.5 | $0.00421 | $0.00421 |
| Haiku 4.5 | $0.00211 | $0.00211 |
Grade D, and why
Xcode-MPC AGENTS.md scanned grade D with 2 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.
Reads agent configuration directoriesmediumAgent snooping
.claude/, .codex/, .gemini/ hold keys, settings and other credentials a mod has no legitimate need for.
| **Codex** | `~/.codex/config.toml` → `[mcp_servers.xcode] command="node"` | `codex mcp list` | Recursive force deletehighDestructive command
rm -rf with a variable or a broad path is one typo away from removing the wrong tree.
- **Ask before destructive actions.** `make clean` / `rm -rf ~/Library/Developer/Xcode/DerivedData` / `git push --force` require explicit user confirmation. How it starts
The opening of the file, as written. The whole thing — 149 lines — stays where its author put it; the contents beside it link to each section on GitHub.
AGENTS — How AI Should Work in This Repo
This is the single source of truth for any AI agent (OpenCode, Codex, Claude Code, Cursor, Copilot, etc.) working in this repository. If you are an AI, read this whole file before editing anything. If you are a human, this tells you what to expect from AI.
Version: 1.0.0 · Applies to: YanxReal/Xcode-MPC · Stack: index.js single-file MCP server, Yarn 4, Make, StdioServerTransport
1. Bilingual Rule — NON-NEGOTIABLE
This repo is bilingual by design:
| Language | Canonical files | Audience |
|---|---|---|
| English (primary) | README.md, docs/*.md |
International, GitHub default |
| Español (mirror) | README.es.md, docs/es/*.md |
Hispanohablante |
Rule: Every change to a user-facing Markdown file MUST be mirrored in both languages in the same commit.
- If you edit
README.md, you must editREADME.es.mdwith the equivalent Spanish translation. - If you edit
docs/installation.md, you must editdocs/es/installation.md. - If you edit
docs/tools.md, you must editdocs/es/tools.md, etc. - Do not leave one language behind. A PR that touches
docs/opencode.mdbut notdocs/es/opencode.mdwill be rejected.
How to translate:
- Keep structure identical (same headings, order, tables). Only language changes.
- Preserve code blocks, JSON/TOML,
shellEscapeexamples, andindex.js:linereferences verbatim — do not translate code. - Keep badges, links, and
{{placeholders}}intact. Translate only prose. - When in doubt, copy the English structure and translate paragraph by paragraph to Spanish.
Verification (run before commit):
# Both READMEs must have same tool count
grep -c "52 tools" README.md
grep -c "52 herramientas" README.es.md
# Both docs sets must exist
ls docs/*.md docs/es/*.md
# No 25/31/43/47 leftovers
grep -r "25 tools\|31 tools\|43 tools\|47 tools" --include="*.md" docs/ README* && echo "FAIL: stale count" || echo "OK"
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 · 149 lines · 2,107 tokens per session scan D 3b61d1a2b612
Xcode-MPC AGENTS.md is an instructions file published in the GitHub repository YanxReal/Xcode-MPC (1 stars, last pushed 8d ago), licensed MIT. It adds 2,107 tokens to every session, about $0.0084 per session on Opus 5.5. A static security scan graded it D with 2 findings (reads agent configuration directories, recursive force delete). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.
Other instructions, from other repositories
vscode buildNext.instructions.md
Working notes and architecture documentation for the new esbuild-based build system in build/next. Use when making changes to the new build pipeline (transpile/bundle commands, NLS plugin, source-map handling, resource copying, or self-hosting watch tasks).
next.js AGENTS.md
AGENTS.md instructions for vercel/next.js, covering next.js development guide, codebase structure, monorepo overview, core package: packages/next and other important packages.
vscode oss-third-party-notices.instructions.md
Instructions for microsoft/vscode, covering vs code oss third-party-notices pipeline, architecture, pipeline flow in ci, cache eligibility and rollout and applying the notice (cutover).
langchain AGENTS.md
AGENTS.md instructions for langchain-ai/langchain, covering global development guidelines for the langchain monorepo, corridor security analysis, project architecture and context, monorepo structure and development tools & commands.
vscode copilot-instructions.md
Copilot instructions for microsoft/vscode, covering vs code copilot instructions, project overview, root folders, core architecture (src/ folder) and built-in extensions (extensions/ folder).
deno copilot-instructions.md
Copilot instructions for denoland/deno, covering deno development guide for github copilot, network access, high level overview, key directories and key files to understand first.