Borrowing it
Nothing to install: this file belongs to Rothschildiuk/context-pack. 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/Rothschildiuk/context-pack/main/AGENTS.mdgit clone --depth 1 https://github.com/Rothschildiuk/context-packWrote 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/rothschildiuk/context-pack/agents-md)<a href="https://agentmods.dev/instructions/rothschildiuk/context-pack/agents-md"><img src="https://agentmods.dev/badge/instructions/rothschildiuk/context-pack/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/rothschildiuk/context-pack/agents-md"><img src="https://agentmods.dev/badge/instructions/rothschildiuk/context-pack/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 | $0.00473 | $0.00473 |
| Opus 5.5 | $0.00189 | $0.00189 |
| Sonnet 5.5 | $0.00095 | $0.00095 |
| Haiku 4.5 | $0.00047 | $0.00047 |
Grade A, and why
context-pack AGENTS.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
AGENTS.md
context-pack is a Rust CLI and MCP server that produces a first-pass briefing of a repository for coding agents. It tells the agent which instructions to follow, which commands build and test the project, where the entry points are, which files matter, and what is currently changing.
Before you edit
- Run the tool on itself:
cargo run -- --cwd .(orcontext-packif installed). It is the fastest map of this repo. - Read
CONTRIBUTING.mdfor the pipeline and the rules for adding heuristics. - Durable notes about this repo live in
.context-pack/memory.md(gitignored, local). Add a fact withcontext-pack memory add "<fact>"when you learn something non-obvious.
Commands
- Build:
cargo build - Test:
cargo test(unit tests insrc/, end-to-end tests intests/agent_briefing.rs, golden files intests/snapshots/) - Lint:
cargo clippy --all-targets -- -D warnings - Format:
cargo fmt --check - Refresh golden files after an intended output change:
UPDATE_EXPECT=1 cargo test --test markdown_snapshots, then review the diff.
All four checks must pass before a change is done. CI runs the same commands.
Rules
- The output is read by agents. Every line must help an agent act: no scores, no timing, no marketing, no instructions aimed at the reader's behaviour.
- A heuristic change needs an end-to-end test in
tests/agent_briefing.rsthat reproduces the repo shape it fixes (see the existing tests for fastapi-, astro-, and maven-style layouts). - Keep the markdown within
--max-bytes. New sections must be trimmable inbriefing::fit_to_budget. - JSON is serialized from
model::Brief. Adding a field is fine; renaming or removing one requires bumpingSCHEMA_VERSION. - Never read outside the target repository (see
mcp::resolve_inside), and redact secrets before emitting file contents (excerpt::redact). .context-pack/memory.mdbelongs to its authors. The tool may only rewrite the metadata block.
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 Changed · -71 lines · -698 tokens per session 5cbc45ece9cd
- 2mo ago First seen · 100 lines · 1,171 tokens per session scan A 861357fc0147
context-pack AGENTS.md is an instructions file published in the GitHub repository Rothschildiuk/context-pack (12 stars, last pushed 1mo ago), licensed MIT. It adds 473 tokens to every session, about $0.0019 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.
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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).
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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.