Borrowing it
Nothing to install: this file belongs to vinta/hal-9000. 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/vinta/hal-9000/main/AGENTS.mdgit clone --depth 1 https://github.com/vinta/hal-9000Wrote 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/vinta/hal-9000/agents-md)<a href="https://agentmods.dev/instructions/vinta/hal-9000/agents-md"><img src="https://agentmods.dev/badge/instructions/vinta/hal-9000/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/vinta/hal-9000/agents-md"><img src="https://agentmods.dev/badge/instructions/vinta/hal-9000/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 | $0.00641 | $0.00641 |
| Opus 5.5 | $0.00256 | $0.00256 |
| Sonnet 5.5 | $0.00128 | $0.00128 |
| Haiku 4.5 | $0.00064 | $0.00064 |
Grade A, and why
hal-9000 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 7d 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 — 47 lines — stays where its author put it; the contents beside it link to each section on GitHub.
AGENTS.md
macOS dev environment automation: dotfiles, AI agent configs, skills, and dev stacks.
Commands
Use make help to find targets and hal --help for CLI usage. When a matching Makefile target exists, use it to run the required tools and flags together.
Gotchas
- Edit managed home-directory files in
dotfiles/;dotfiles/hal_dotfiles.jsonmaps them to their destinations under~/. - Edit skills in
skills/. Thehal-9000Claude Code marketplace installs the published GitHub version, so local edits do not update that installed plugin. Distribution commands are in README.md. - Keep the
hal-skillsskill lists inskills/.claude-plugin/plugin.jsonand.claude-plugin/marketplace.jsonsynchronized. Both copies are intentional: Claude Code reads the first for author and skill count;npx skillsneeds the second to group skills because it only looks for a rootplugin.json. - Regenerate generated artifacts with their repo command. After changing
bin/hal.py, runmake hal-completionto update zsh completion.
External Tool Documentation
When looking up tool behavior or configuration, use find-docs or an available documentation/web fetch tool.
Context7 Library IDs
Use these pre-resolved IDs with find-docs. Pass the matching ID directly to npx ctx7@latest docs <libraryId> "<query>", skipping library resolution. If an ID no longer resolves, look it up again with find-docs.
| Tool | libraryId |
|---|---|
| ansible | /websites/ansible_projects_ansible |
| ansible-lint | /ansible/ansible-lint |
| betterleaks | /betterleaks/betterleaks |
| fnm | /schniz/fnm |
| github-actions | /websites/github_en_actions |
| homebrew | /homebrew/brew |
| oh-my-zsh | /ohmyzsh/ohmyzsh |
| ollama | /ollama/ollama |
| pre-commit | /pre-commit/pre-commit.com |
| pytest | /pytest-dev/pytest |
| ruff | /websites/astral_sh_ruff |
| ty | /websites/astral_sh_ty |
| uv | /websites/astral_sh_uv |
| zsh | /websites/zsh_sourceforge_io_doc_release |
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.
- 7d ago Changed · -1 lines · -32 tokens per session a3449d9ba0de
- 1mo ago Changed · -8 tokens per session aa56fe0b5b85
- 1mo ago Changed · -2 lines · -105 tokens per session scan B → A b26cee668b17
- 1mo ago First seen · 50 lines · 786 tokens per session scan B 4665a4b97ca1
hal-9000 AGENTS.md is an instructions file published in the GitHub repository vinta/hal-9000 (141 stars, last pushed today), licensed MIT. It adds 641 tokens to every session, about $0.0026 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 2026-08-30.
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.