TL;DR: The FAF Python ecosystem is six packages on PyPI, all built on the same IANA-registered .faf and .fafm formats. Two are reference implementations of Zenodo-published papers. Persistent Context plus Permanent Memory — uvx and go.

The family

claude-fafm-sdk v0.4.0 New

Portable, cross-vendor AI memory in .fafm — offline-first SDK; connect a free namepoint for full intel. Implements the Memory paper.

uvx claude-fafm-sdk

faf-memory-mcp v0.1.0 New

MCP server for .fafm — the Permanent Memory Layer (PML). Wraps claude-fafm-sdk via fastmcp. IANA-registered, cross-vendor, offline-first.

uvx faf-memory-mcp

gemini-faf-mcp v2.2.5 FastMCP

Persistent Project Context for Google Gemini. IANA-registered .faf format, MCP server + Cloud Run REST API; unifies CLAUDE.md, GEMINI.md, AGENTS.md. Implements the Context paper.

uvx gemini-faf-mcp

faf-python-sdk Popular

Persistent project context for Python — parse, validate, and score .faf files. The foundation other Python FAF tools (gemini-faf-mcp, custom MCP servers, CI validators) build on. IANA-registered application/vnd.faf+yaml.

pip3 install faf-python-sdk

grok-faf-voice Built w/GROK

Voice Memory Layer (VML) for Grok — persistent across sessions, devices, and models. LiveKit-enabled.

pip3 install grok-faf-voice

faf-agent-mcp FAFipedia

FAF Agent — the Voice of FAF. MCP server.

uvx faf-agent-mcp

Why it exists

Every Python AI tool invents its own context shape. .faf is the IANA-registered standard that lets them share one — the same file read by Gemini, Claude, and Grok. .fafm is the memory profile: durable agent memory in a portable, versionable file.

FAF on PyPI is six surfaces of one standard. Different vendors, different runtimes, one format underneath.

Persistent Context + Permanent Memory

.faf carries context. .fafm carries memory. Both are IANA-registered, and each has a peer-citable paper on Zenodo, hosted at CERN. That spine is what every package above shares.

Receipts

IANA — application/vnd.faf+yaml · application/vnd.fafm+yaml
Context paper (.faf) — DOI 10.5281/zenodo.18251362 · CC BY 4.0 · Zenodo (CERN)
Memory paper (.fafm) — DOI 10.5281/zenodo.20348942 · CC BY 4.0 · Zenodo (CERN)
MCP Registry — FAF Ecosystem #2759

Try it

The MCP servers and the SDK CLI run straight from uvx — zero install, current version. The two SDK libraries (faf-python-sdk, grok-faf-voice) install with pip3 and import in your code.

uvx claude-fafm-sdk init

all FAF on PyPI · pypi.faf.one · faf.one