faf-expert

faf-expert is a skill for Claude Code, Codex from Wolfe-Jam/faf-mcp. It costs 69 tokens per session (2,838 once invoked), scanned A, a copy of faf-expert, MIT.

A skill for managing .faf files, a YAML-based format that stores a project's key context so AI tools can use it across sessions. It also connects that context with CLAUDE.md, a human-readable project guide.

In plain words
What is it for?
Use it to create, update, synchronise, and score project context, configure the faf command-line tool, and connect project information to AI development tools.
Why use it?
It reduces the need to repeat project details to different AI assistants and helps keep machine-readable and human-readable project information aligned.

Skill for Claude CodeCodex

Install

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.

agentmods
npx agentmods add skills/wolfe-jam/faf-mcp/skill
Any agent
npx skills add Wolfe-Jam/faf-mcp --skill skill
Clone the repo
git clone --depth 1 https://github.com/Wolfe-Jam/faf-mcp

Made for: Claude Code, Codex.

Wrote 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.

agentmods badge for faf-expert

README.md
[![agentmods](https://agentmods.dev/badge/skills/wolfe-jam/faf-mcp/skill.svg)](https://agentmods.dev/skills/wolfe-jam/faf-mcp/skill)
Your own site
<a href="https://agentmods.dev/skills/wolfe-jam/faf-mcp/skill"><img src="https://agentmods.dev/badge/skills/wolfe-jam/faf-mcp/skill.svg" alt="Measured on agentmods" height="20"></a>
Per session 69 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,838 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin 98% copy Near-identical to another mod in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5 $0.00069 $0.02838
Opus 5 $0.00034 $0.01419
Sonnet 5 $0.00014 $0.00568
Haiku 4.5 $0.00007 $0.00284

Measured 3d ago against content hash 5bf38293bf66, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

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 3d 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.

Origin

This is a copy

98% identical to faf-expert — 2 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

skill/SKILL.md · 386 lines

How it starts

The opening of the file, as written. The whole thing — 386 lines — stays where its author put it; the contents beside it link to each section on GitHub.

FAF Expert - Project DNA Specialist

What is .faf?

.faf is the universal format for persistent AI project context - "Project DNA ✨ for ANY AI".

Core Concepts:

  • Foundational AI-context Format - YAML-based project context file
  • Persistent Context - Survives across sessions, tools, and AI assistants
  • Universal - Works with Claude, ChatGPT, Gemini, Cursor, any AI
  • Measurable - Championship scoring system (0-100% AI-readiness)
  • Official Anthropic MCP Steward - PR #2759 MERGED

When to Use This Skill

Activate this skill when:

  • Creating or updating .faf files
  • Working with CLAUDE.md files
  • Running faf CLI commands (init, auto, score, formats, bi-sync)
  • Scoring project AI-readiness
  • Setting up MCP server (claude-faf-mcp)
  • Configuring tool visibility (v2.8.0+)
  • Discussing project context or documentation

Key Files

  • .faf - YAML format, machine-readable project context
  • CLAUDE.md - Markdown format, human-readable project guide
  • Bi-Sync - .faf ↔ CLAUDE.md kept in sync automatically
  • project.faf - v1.2.0 standard naming

Common Commands

faf-cli Commands

faf init              # Create .faf from project
faf auto              # Auto-detect stack and create .faf
faf score             # Rate AI-readiness (0-100%)
faf formats           # List 153+ supported formats
faf bi-sync           # Sync .faf ↔ CLAUDE.md
faf status            # Check project AI-readiness
faf validate          # Validate .faf structure
faf doctor            # Diagnose and fix issues
faf migrate           # Migrate to latest format

MCP Tools (claude-faf-mcp v2.8.0+)

v2.8.0 introduces Tool Visibility System:

  • 21 Core Tools (default) - Essential workflow
  • 51 Total Tools (opt-in) - All features

Configuration:

{
  "mcpServers": {
    "faf": {
      "command": "npx",
      "args": ["-y", "[email protected]"],
      "env": {
        "FAF_MCP_SHOW_ADVANCED": "false"
      }
    }
  }
}

Read the full file on GitHub · 386 lines

Changes

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.

  1. 3d ago First seen · 386 lines · 69 tokens per session scan A 5bf38293bf66

Subscribe to this mod's changes

faf-expert is a skill published in the GitHub repository Wolfe-Jam/faf-mcp (6 stars, last pushed 14d ago), licensed MIT. It adds 69 tokens to every session and 2,838 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it A with 0 findings. It is 98% identical to faf-expert, differing in 2 lines, and is treated as a copy.

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