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 agentmods add instructions/wolfe-jam/faf/claude-mdgit clone --depth 1 https://github.com/Wolfe-Jam/fafWhat 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 | $0.03182 | $0.03182 |
| Opus 5 | $0.01591 | $0.01591 |
| Sonnet 5 | $0.00636 | $0.00636 |
| Haiku 4.5 | $0.00318 | $0.00318 |
Grade A, and why
faf CLAUDE.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 2d 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 — 464 lines — stays where its author put it; the contents beside it link to each section on GitHub.
CLAUDE.md — @faf/specification
What This Is
.faf (Foundational AI-context Format) - Official format specification
Stack
- Language: JavaScript
Context
- Who: AI agents, developers, and tool implementers who read or write project.faf — anyone building an implementation that conforms to the format
- What: .faf (Foundational AI-context Format) - Official format specification
- Why: A portable AI-context standard needs one canonical, IANA-registered specification — the authoritative source for application/vnd.faf+yaml that every implementation conforms to
- Where: https://github.com/Wolfe-Jam/faf
- When: IANA-registered (application/vnd.faf+yaml, October 30 2025) — Specification v1.1.0
- How: Read SPECIFICATION.md and the JSON schemas; reference example.faf and examples/; implementations generate and consume project.faf files conforming to this spec
STATUS: BI-SYNC ACTIVE — 2026-06-20T01:17:45.287Z
🏎️ CLAUDE.md - @faf/specification
Official FAF Format Specification
PROJECT STATE: IANA-REGISTERED 🏆
Current Position: Official Internet standard format specification Tyre Compound: ULTRASOFT C5 (Maximum Performance) License: MIT (Open Source) Status: IANA-registered (application/vnd.faf+yaml)
🎨 CORE CONTEXT
Project Identity
- Name: @faf/specification
- Version: 1.1.0
- Type: Format specification (documentation)
- License: MIT (open source)
- Quality: IANA-REGISTERED INTERNET STANDARD
Our Mission - The Format Itself
THIS IS THE SPEC:
@faf/specification: THE SOURCE OF TRUTH
├── SPECIFICATION.md - Official format specification
├── example.faf - Reference implementation
├── examples/ - 5 real-world examples
├── assets/ - Logos and graphics
└── GitHub repo: Wolfe-Jam/faf
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.
- 2d ago First seen · 464 lines · 3,182 tokens per session scan A 5c1324d3efff
faf CLAUDE.md is an instructions file published in the GitHub repository Wolfe-Jam/faf (16 stars, last pushed 2d ago), licensed MIT. It adds 3,182 tokens to every session, about $0.0159 per session on Opus 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
faf-cli AGENTS.md
Instructions for Wolfe-Jam/faf-cli, covering agents.md — faf-cli, setup & build, run the tests, where things live and conventions.
faf-cli copilot-instructions.md
Instructions for Wolfe-Jam/faf-cli, covering github copilot instructions — faf-cli v6, tech stack and project context.
faf-cli CLAUDE.md
Instructions for Wolfe-Jam/faf-cli, covering claude.md — faf-cli, what this is, stack and context.
agent-context-os AGENTS.md
AGENTS.md instructions for conorbronsdon/agent-context-os, covering context os, session lifecycle, lifecycle kernel, context routing and safety.
agent-context-os CLAUDE.md
Claude Code instructions for conorbronsdon/agent-context-os, covering who i am, slash commands (claude code), when to load additional context, thought-partner mode and safety contract.
faf-cli GEMINI.md
Instructions for Wolfe-Jam/faf-cli, covering gemini.md — faf-cli v6 and stack.