Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx skills add Wolfe-Jam/faf-cli --skill faf-expertgit clone --depth 1 https://github.com/Wolfe-Jam/faf-cliWrote 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/skills/wolfe-jam/faf-cli/faf-expert)<a href="https://agentmods.dev/skills/wolfe-jam/faf-cli/faf-expert"><img src="https://agentmods.dev/badge/skills/wolfe-jam/faf-cli/faf-expert/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/skills/wolfe-jam/faf-cli/faf-expert"><img src="https://agentmods.dev/badge/skills/wolfe-jam/faf-cli/faf-expert.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector warn
SkillSpector: 2 findings, up to medium
These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →
- medium MCP Rug Pull · line 31 npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.Fix: Pin the version: npx @scope/[email protected]
- medium MCP Rug Pull · line 36 npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.Fix: Pin the version: npx @scope/[email protected]
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 | $0.00082 | $0.02140 |
| Opus 5.5 | $0.00033 | $0.00856 |
| Sonnet 5.5 | $0.00016 | $0.00428 |
| Haiku 4.5 | $0.00008 | $0.00214 |
Grade A, and why
faf-expert 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 — 175 lines — stays where its author put it; the contents beside it link to each section on GitHub.
FAF Expert — Persistent Project Context Specialist
What is .faf?
The .faf file is Persistent Project Context for AI — a single source of truth that survives across sessions, tools, and AI assistants.
- IANA-registered media type:
application/vnd.faf+yaml(registered Oct 30, 2025) - Anthropic-listed: modelcontextprotocol/servers PR #2759 — claude-faf-mcp shipped as "Persistent Project Context Server" (merged Oct 17, 2025)
- Git-native:
project.fafversions with your code; every clone gets full AI context - The CLI behind the FCL — the Foundational Context Layer for AI
The credo: FAF defines. AGENTS.md instructs. AI codes.
When to activate this skill
- Creating, editing, or scoring
.faffiles - Syncing
.faf→CLAUDE.md, or exporting it toAGENTS.md,.cursorrules,GEMINI.md - Diagnosing sub-Trophy scores and reaching 🏆 100%
- Explaining the FCL, tier system, or app-type ladder
- Connecting
.fafwork to the broader receipts: IANA, Anthropic PR #2759, MCP Registry
Install the CLI
bunx faf # Bun — zero install, fastest
npx faf # npm — works everywhere
npm install -g faf-cli # global install
brew install faf-cli # Homebrew
faf is the verb across every surface: bunx faf, npx faf, /faf (Claude Code plugin), faf (global). Bare faf shows your project's score; faf auto detects and fills.
The workflow
faf init → faf auto → faf go → 🏆 Trophy 100%
| Command | What it does |
|---|---|
faf init |
Create a project.faf scaffold for your project |
faf auto |
Auto-detect stack, fill what's detectable, score |
faf go |
Guided interview to fill the remaining slots → Trophy |
faf score |
Check current AI-readiness (0–100%) |
faf sync |
Write CLAUDE.md from .faf (one way) |
faf compile |
.faf → .fafb binary (sealed, portable, deterministic) |
faf check |
Validate .faf structure |
faf info |
Version + system info |
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 32099a26f302
- 1mo ago Changed 51e277dec976
- 1mo ago First seen · 175 lines · 82 tokens per session scan A 5db297dab44e
faf-expert is a skill published in the GitHub repository Wolfe-Jam/faf-cli (42 stars, last pushed yesterday), licensed MIT. It adds 82 tokens to every session and 2,140 once invoked, about $0.0003 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 skills, from other repositories
bun
Master the Bun all-in-one toolkit — runtime, package manager, test runner, and bundler. Use when writing, running, testing, or bundling TypeScript/JavaScript with Bun. Triggers on "bun", "bunx", "bun install", "bun test", "bun run". If the user asks to 'write tests' without specifying the type, you MUST ask 'Unit…
drizzle-orm
Drizzle ORM best practices. Use when configuring databases, designing schemas, writing queries, or handling migrations with Drizzle ORM, particularly with Cloudflare D1 or SQLite. NOT for database setup without an explicit engine. Require engine specification (Postgres/MySQL/SQLite). Use for ORM-managed migrations.
hono
Hono framework best practices. Use when building, reviewing, or debugging Hono applications, especially on Cloudflare Workers. Covers routing, middleware, context (c), and RPC patterns. Do NOT trigger for generic 'build a server' requests unless Hono or Cloudflare Workers is explicitly requested.
trpc
Skill "trpc" from neverinfamous/memory-journal-mcp, covering trpc guidelines, 1. routers and procedures, 2. context and middleware and 3. client integration.
zod
Zod schema validation standards. Use when defining schemas, parsing user input, transforming data, or integrating type-safe boundaries in API endpoints and configurations. SECURITY: Zod schemas are your primary security boundary. Ensure they are strict and handle all edge cases.
typescript
Comprehensive enterprise-grade TypeScript operational guide. Use when configuring TS projects, writing complex generics, or enforcing strict type safety. Triggers on "TypeScript", "tsconfig.json", "generics", "type errors", "strict mode". SECURITY: Do not bypass type checks with 'any' or '@ts-ignore'.