Borrowing it
Nothing to install: this file belongs to kazuki0529/git-readonly-mcp. 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/kazuki0529/git-readonly-mcp/main/.github/copilot-instructions.mdgit clone --depth 1 https://github.com/kazuki0529/git-readonly-mcpWrote 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/kazuki0529/git-readonly-mcp/copilot-instructions)<a href="https://agentmods.dev/instructions/kazuki0529/git-readonly-mcp/copilot-instructions"><img src="https://agentmods.dev/badge/instructions/kazuki0529/git-readonly-mcp/copilot-instructions/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/kazuki0529/git-readonly-mcp/copilot-instructions"><img src="https://agentmods.dev/badge/instructions/kazuki0529/git-readonly-mcp/copilot-instructions.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 | $0.00234 | $0.00234 |
| Opus 5.5 | $0.00094 | $0.00094 |
| Sonnet 5.5 | $0.00047 | $0.00047 |
| Haiku 4.5 | $0.00023 | $0.00023 |
Grade A, and why
git-readonly-mcp copilot-instructions.md 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 1mo 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
Git Readonly MCP development instructions
- This project targets Node.js 20+ and the official MCP TypeScript SDK v2: https://ts.sdk.modelcontextprotocol.io/v2/
- The implemented protocol baseline is MCP 2026-07-28: https://modelcontextprotocol.io/specification/2026-07-28
- Keep stdout exclusively for stdio JSON-RPC. Write diagnostics to stderr.
- All Git subprocesses must pass through
GitRunner; never expose a raw command or raw argument executor as an MCP tool. - Keep tools read-only and validate repository IDs, revisions, paths, and remote names before invoking Git.
- Add JSDoc to every class, interface, type, method, and function. Add inline comments only for non-obvious WHY decisions, with blank lines between logical processing units.
- Apply SOLID, KISS, YAGNI, and DRY conservatively: keep modules cohesive, inject narrow contracts, avoid speculative abstractions, and centralize repeated security policy.
- Preserve the single-file ESM distribution. Run
npm run checkandnpm run test:integrationafter behavior changes.
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.
- 1mo ago First seen · 10 lines · 234 tokens per session scan A a9424c25f71f
git-readonly-mcp copilot-instructions.md is an instructions file published in the GitHub repository kazuki0529/git-readonly-mcp (0 stars, last pushed 6d ago), licensed MIT. It adds 234 tokens to every session, about $0.0009 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 2026-08-31.
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