Borrowing it
Nothing to install: this file belongs to beadnall/codemap. 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/beadnall/codemap/main/AGENTS.mdgit clone --depth 1 https://github.com/beadnall/codemapWrote 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/beadnall/codemap/agents-md)<a href="https://agentmods.dev/instructions/beadnall/codemap/agents-md"><img src="https://agentmods.dev/badge/instructions/beadnall/codemap/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/beadnall/codemap/agents-md"><img src="https://agentmods.dev/badge/instructions/beadnall/codemap/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 | $0.00747 | $0.00747 |
| Opus 5.5 | $0.00299 | $0.00299 |
| Sonnet 5.5 | $0.00149 | $0.00149 |
| Haiku 4.5 | $0.00075 | $0.00075 |
Grade A, and why
codemap 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 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 — 79 lines — stays where its author put it; the contents beside it link to each section on GitHub.
codemap
Turn a codebase into an explorable diagram: isometric blocks on a grid, a component index, a what-it-does / how-it's-built panel, and the system's own data moving along the edges as dots the reader can stop and inspect.
The instructions are in SKILL.md. Read that file, then follow it. This page exists so that agents which do not read Anthropic's skill format can still find them.
If you are Claude
You already have this as a skill if it is installed in ~/.claude/skills/ or
<repo>/.claude/skills/. Nothing here to do.
If you are Grok Build
Install the skill into one of the discovery paths:
~/.grok/skills/codemap/ # or <repo>/.grok/skills/codemap/
Then ask for a map normally — "map this codebase", "codemap this repo",
"diagram the architecture". Grok Build picks up SKILL.md automatically, so
there is no separate instructions file to copy.
Delivery. Write the finished HTML to disk, for example codemap.html, and
tell the user the path. The page is self-contained and opens in any browser
with no server.
If you are another agent
Nothing in the method is Claude-specific. The template is plain HTML and JavaScript, the scripts are Python, and the instructions are markdown. Two details differ:
- Triggering. There is no frontmatter for you to match on, so this only runs when the user asks for it and points you here.
- Delivery. SKILL.md's last step suggests an artifact or canvas if you have one. If you do not, write the file to disk and tell the user the path. It is self-contained by design and opens in any browser with no server.
Everything else — mining the repository for facts, choosing nodes and edges, filling the four arrays, verifying, rendering — applies unchanged.
The short version
cp assets/template.html my-map.html
# replace STATS, NODES, EDGES and REGIONS, plus <title> and the <svg aria-label>
python3 scripts/verify.py my-map.html
python3 scripts/render.py my-map.html render.png
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 · 79 lines · 747 tokens per session scan A af5dbebaae58
codemap AGENTS.md is an instructions file published in the GitHub repository beadnall/codemap (10 stars, last pushed 2mo ago), licensed MIT. It adds 747 tokens to every session, about $0.0030 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.
codemap AGENTS.md compared with instructions from other repositories
| Mod | Type | Stars | Last push | Licence | Scan | Tokens | Works with |
|---|---|---|---|---|---|---|---|
| codemap AGENTS.mdbeadnall/codemap | Instructions file | 10 | 2mo ago | MIT | A | 747 | Codex, OpenCode |
| vscode buildNext.instructions.mdmicrosoft/vscode | Instructions file | 195k | yesterday | MIT | A | 9,719 | GitHub Copilot |
| next.js AGENTS.mdvercel/next.js | Instructions file | 143k | yesterday | MIT | A | 7,461 | Codex, OpenCode |
| langchain AGENTS.mdlangchain-ai/langchain | Instructions file | 149k | yesterday | MIT | A | 4,680 | Codex, OpenCode |
| vscode oss-third-party-notices.instructions.mdmicrosoft/vscode | Instructions file | 195k | yesterday | MIT | A | 5,516 | GitHub Copilot |
| vscode copilot-instructions.mdmicrosoft/vscode | Instructions file | 195k | yesterday | MIT | A | 3,093 | GitHub Copilot |
| deepseek-harness AGENTS.mddeepseek-ai/deepseek-harness | Instructions file | 274k | 2d ago | MIT | A | 4,313 | Codex, OpenCode |