Borrowing it
Nothing to install: this file belongs to dominion525/familiar. 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/dominion525/familiar/main/AGENTS.mdgit clone --depth 1 https://github.com/dominion525/familiarWrote 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/dominion525/familiar/agents-md)<a href="https://agentmods.dev/instructions/dominion525/familiar/agents-md"><img src="https://agentmods.dev/badge/instructions/dominion525/familiar/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/dominion525/familiar/agents-md"><img src="https://agentmods.dev/badge/instructions/dominion525/familiar/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 | $0.00951 | $0.00951 |
| Opus 5.5 | $0.00380 | $0.00380 |
| Sonnet 5.5 | $0.00190 | $0.00190 |
| Haiku 4.5 | $0.00095 | $0.00095 |
Grade A, and why
familiar 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.
How it starts
The opening of the file, as written. The whole thing — 60 lines — stays where its author put it; the contents beside it link to each section on GitHub.
familiar — Agent Guide
A guide for AI coding agents working on this repository. For a human-oriented overview, see README.md / README.ja.md.
Project overview
A Claude Code skill / plugin that drives the real Google Chrome on macOS via AppleScript (Apple Events). It uses neither the DevTools Protocol, Playwright, nor any other separate driver — it operates the Chrome the user already runs every day. The goal is to be treated as a regular user even on pages with bot / WAF defenses that block headless / automated browsers.
Repository layout
skills/familiar/familiar.applescript— the script itself (operational core)skills/familiar/SKILL.md— the skill definition. This is the English body read by the skill loader (the auto-activation trigger). Keep it as a thin index and push details into the reference files (progressive disclosure).skills/familiar/SKILL.ja.md— Japanese reference translation (not read by the loader)skills/familiar/reference-browser.md/reference-browser.ja.md— detailed spec for the control surface (tab / window, navigation, waits, content / script)skills/familiar/reference-actions.md/reference-actions.ja.md— detailed spec for the retrieval and interaction actions plus selector strategy (CSS /text=/xpath=/label=).claude-plugin/plugin.json— plugin manifest.claude-plugin/marketplace.json— marketplace definitionREADME.md/README.ja.md— English / Japanese READMEAGENTS.md/AGENTS.ja.md— English / Japanese agent guide
Development and verification
- AppleScript does not need compilation. Run it as-is via
osascript. - For a syntax check, use
osacompile -o /dev/null skills/familiar/familiar.applescript(compiles for syntax only, does not execute). - Real verification requires a live Chrome and cannot be done in CI.
- Prerequisite: enable "Allow JavaScript from Apple Events" in Chrome and accept the automation permission prompt on first run.
- Invocation form:
osascript skills/familiar/familiar.applescript ACTION [ARGS...]. - For the MCP server (
mcp/), install the pre-commit hooks once after cloning:npx lefthook installat the repo root (aftercd mcp && npm install). The hooks run Biome, tsc, and Vitest in parallel on staged changes undermcp/. - Smoke-testing tip: pages served via
data:URLs do NOT execute inline<script>blocks or inline event handler attributes (onclick="...") under Chrome's data-URL security restrictions. When verifying actions likeclickorset_checkedagainst a data URL, assert against the DOM state the action itself writes (e.g.document.getElementById('check-1').checked) rather than against side effects of inline JS that will not run. Serve from a local file (file://) or a local http server when inline script execution is required.
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 · 60 lines · 951 tokens per session scan A 045bc4831865
familiar AGENTS.md is an instructions file published in the GitHub repository dominion525/familiar (1 stars, last pushed 20d ago), licensed MIT. It adds 951 tokens to every session, about $0.0038 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).
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.