Borrowing it
Nothing to install: this file belongs to Sanmu-27/repo2agent. 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/Sanmu-27/repo2agent/main/.github/copilot-instructions.mdgit clone --depth 1 https://github.com/Sanmu-27/repo2agentWrote 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/sanmu-27/repo2agent/copilot-instructions)<a href="https://agentmods.dev/instructions/sanmu-27/repo2agent/copilot-instructions"><img src="https://agentmods.dev/badge/instructions/sanmu-27/repo2agent/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/sanmu-27/repo2agent/copilot-instructions"><img src="https://agentmods.dev/badge/instructions/sanmu-27/repo2agent/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 | $0.00307 | $0.00307 |
| Opus 5.5 | $0.00123 | $0.00123 |
| Sonnet 5.5 | $0.00061 | $0.00061 |
| Haiku 4.5 | $0.00031 | $0.00031 |
Grade A, and why
repo2agent 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
GitHub Copilot Instructions
This file was generated by repo2agent. It gives AI coding agents the shortest reliable path to work safely in this repository.
Repository Snapshot
- Name: repo2agent
- Stack: Not detected
- Package manager: npm
Project Map
lib/test/docs/examples/.npm-cache/bin/scripts/
Common Commands
- test:
npm run test - lint:
npm run lint
Agent Workflow
- Read the relevant files before editing.
- Prefer existing patterns, naming, and architecture over new abstractions.
- Keep changes scoped to the user request.
- Do not rewrite unrelated code or reformat files outside the change.
- Do not discard local/user changes without explicit permission.
- Update tests when behavior changes.
- Run the smallest meaningful verification command before finalizing.
- In the final response, say what changed, what was verified, and what risk remains.
Safety Rules
- Be careful with secrets, auth, permissions, payments, migrations, generated files, and lockfiles.
- Avoid adding dependencies unless they clearly reduce complexity.
- If a command fails, report the failure and choose the next most useful verification step.
Copilot Notes
- Prefer small, reviewable suggestions.
- Include tests or usage examples for 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 · 50 lines · 307 tokens per session scan A 8961f9fbb79e
repo2agent copilot-instructions.md is an instructions file published in the GitHub repository Sanmu-27/repo2agent (1 stars, last pushed 5mo ago), licensed MIT. It adds 307 tokens to every session, about $0.0012 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.
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).
vscode model-prompts.instructions.md
Model-specific prompt authoring and registry guidelines.