Claude-FAF-MCP

Only Persistent Project Context MCP Server - Official Anthropic Registry

claude-faf-mcp

Tell AI what you're building, who it's for, and why it matters. 30 seconds. 🐘 It never forgets.

Anthropic MCP CI npm version NPM Downloads License: MIT

33 MCP tools. IANA-registered format (application/vnd.faf+yaml). 2,346 test executions per push.


The 3Ws — 3 Answers. That's It.

Every great product started with 3 answers to the 3Ws — Who, What, Why:

WHO is it for?WHAT does it do?WHY build it?
UberPeople who need a rideTap a button, car arrivesTaxis were broken
AirbnbTravelers who can't afford hotelsStay in someone's spare roomMillions of empty rooms exist
SlackTeams drowning in emailOrganized group messagingDecisions buried in threads
VenmoFriends splitting billsSend money instantlySomeone always forgets to pay back

Same pattern. Every product that works starts here. .faf captures it:

human_context:
  who: "people who need a ride across town"
  what: "tap a button, car arrives in minutes"
  why: "taxis are slow, expensive, and hard to find"

30 seconds. Claude builds your project.faf from this. Every session after, AI starts smart.

The 6Ws — For Optimized AI

3Ws gets you started. For fully optimized AI, complete the set — Where, When, How:

  where: "mobile app, iOS and Android"    # where does it live?
  when: "launch in 3 months"              # when is it shipping?
  how: "GPS matching, real-time pricing"  # how does it work?

3Ws initiates the project with AI. 6Ws optimizes AI to 100%. Same YAML, same file. More examples → faf.one/ideas


Quick Start

Copy and paste this to Claude:

Install the FAF MCP server: npm install -g claude-faf-mcp, then add this to my claude_desktop_config.json: {"mcpServers": {"faf": {"command": "npx", "args": ["-y", "claude-faf-mcp"]}}} and restart Claude Desktop.

Then tell Claude your 3Ws: "I'm building [what] for [who] because [why]"


How It Works

You → 3 answers → project.faf → AI reads it → every session → forever

project.faf  ←── 8ms ──→  CLAUDE.md     (bi-sync, free)
project.faf  ←── 8ms ──→  MEMORY.md     (tri-sync, Pro 🐘)

Claude does the rest. Zero-effort, right first time, fast, accurate, done. Language, framework, package manager, build tools — all auto-detected from your existing files. The human context is the part only you can give.


Scoring: From Blind to Optimized

TierScoreWhat it means
🏆 Trophy100%Gold Code — AI is optimized
🥇 Gold99%+Near-perfect context
🥈 Silver95%+Excellent
🥉 Bronze85%+Production ready
🟢 Green70%+Solid foundation
🟡 Yellow55%+AI flipping coins
🔴 Red<55%AI working blind
🤍 White0%No context at all

At 55%, AI guesses half the time. At 100%, AI knows your project. Same compiler as faf-cli — same score everywhere.


33 MCP Tools

All tools run standalone — zero CLI dependencies, 19ms average execution.

Create & Detect

ToolPurpose
faf_initInitialize project DNA
faf_autoAuto-detect stack and populate context
faf_quickLightning-fast creation (3ms)
faf_readmeExtract context from README (+25-35% boost)
faf_formatsDiscover all formats in your project
faf_gitExtract context from any GitHub repo URL
faf_human_addAdd human context (the 6Ws)

Validate & Score

ToolPurpose
faf_scoreAI-readiness score (0-100%) with breakdown
faf_checkValidate .faf structure
faf_doctorDiagnose and fix common issues
faf_goGuided interview to Gold Code

Sync & Persist

ToolPurpose
faf_syncSync .faf → CLAUDE.md
faf_bi_syncBi-directional .faf ↔ CLAUDE.md
faf_tri_syncTri-sync to MEMORY.md (Pro — 14-day free trial)
faf_enhanceIntelligent enhancement

Export & Interop

ToolPurpose
faf_agentsImport/export AGENTS.md (OpenAI Codex)
faf_cursorImport/export .cursorrules (Cursor IDE)
faf_geminiImport/export GEMINI.md (Google Gemini)
faf_conductorImport/export Conductor directory

Read & Write

ToolPurpose
faf_readRead any file
faf_writeWrite any file
faf_statusProject status overview
faf_debugEnvironment inspection
faf_aboutWhat is .faf?

Full tool reference →


🐘 Nelly Never Forgets (Pro)

bi-sync keeps .fafCLAUDE.md aligned. Free forever.

tri-sync adds MEMORY.md — your AI remembers across sessions. Feed Nelly, she never forgets.

bi-sync  = .faf ↔ CLAUDE.md              ← free forever
tri-sync = .faf ↔ CLAUDE.md ↔ MEMORY.md  ← Pro 🐘

$3/mo · $19/yr · $29/yr Global. 14-day free trial, no signup. Friends of FAF → faf.one/pro


The .FAF Position

Model        Context          Protocol
─────        ───────          ────────
Claude    →   .faf        →    MCP
Gemini    →   .faf        →    MCP
Codex     →   .faf        →    MCP
Any LLM   →   .faf        →    MCP

IANA-registered (application/vnd.faf+yaml). Works with any AI. Define once, use everywhere.


Ecosystem

PackagePlatformRegistry
claude-faf-mcp (this)Claudenpm
faf-cliUniversal CLInpm + Homebrew
gemini-faf-mcpGoogle GeminiPyPI
grok-faf-mcpxAI Groknpm
rust-faf-mcpRustcrates.io
faf-wasmBrowser/Edgenpm
Chrome ExtensionBrowserChrome Web Store

Same project.faf. Same scoring. Same result. Different execution layer.


Quality

391 tests · 12 suites · 6 platforms (ubuntu/macos/windows × Node 18/20)

CI Dashboard →


Privacy

Everything runs locally. No data leaves your machine. No analytics, no telemetry, no tracking, no accounts. Privacy policy →


License

MIT — Free and open source


FAF Family

faf-clinpx faf-cli init — create .faf for any project
claude-faf-mcpMCP server for Claude Desktop
gemini-faf-mcpMCP server for Gemini CLI
grok-faf-mcpMCP server for Grok
faf-mcpMCP server for Cursor, Windsurf, Cline, VS Code
rust-faf-mcpMCP server in Rust
faf-skills17 Claude Code skills
faf.oneBlog, downloads, docs
IANA Registrationapplication/vnd.faf+yaml

format | driven 🏎️⚡️ wolfejam.dev

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