fAI

YOUR PERSONAL AI WORKBENCH

Build with any AI. Keep everything. Own it.

fAI is a portable workbench that sits under the AI coding tools you already use: Claude Code, Cursor, Codex, whatever's next. It captures how you work and compounds it into context every tool can draw from, session after session, in plain files you own.

deno run -A "https://www.fathym.com/fai/install.deno"

Free · open source · runs locally. Session 1 captures. Session 2 remembers.

AI gives you intelligence. fAI gives you intellect.

one vault, under every tool, compounding session over session

~ fai

WHAT fAI ACTUALLY IS

One workbench under every tool.

Like GitHub, but for your AI context: portable, versioned, and yours.

Not a coding agent. Not a model router. Not a memory plugin. A workbench.

Your context, captured

Decisions, patterns, vocabulary: captured as you work, without changing how you work.

Smarter every session

What you learn in one session shows up in the next. Every tool draws from the same vault.

Plain files, git-backed

Readable markdown in ~/.fai/. No opaque database. Fire us and keep running.

HOW IT WORKS

Four steps. Fully automatic.

Every session runs the same four steps: no config, no ritual, running quietly under whatever tool you're in.

Capture

What you discussed, decided, and discovered, as you work.

Seal

Sessions seal into your vault on a cadence: patterns, decisions, open threads.

Synthesize

Your saved sessions get boiled down to what matters, using the model you pick.

Inject

Your next session starts already briefed, in every tool.

WHAT CHANGES

Session 50 knows your patterns. Session 1 started from scratch.

Without fAI

✗Re-explain the project, every session
✗Context trapped per tool: Claude's stays in Claude, Cursor's in Cursor
✗Switch tools, start over
✗Your best thinking evaporates on close

With fAI

✓Every tool starts already briefed
✓One vault feeds all 16 agents
✓Switch tools without starting over
✓Your judgment compounds, session over session

YOUR VAULT

Three layers of context, in plain files.

FAI-SESSION.md

What's happening now

Decisions made, approaches tried, threads still open: the living briefing your next session picks up.

FAI-PROJECT.md

What you're building

Architecture, patterns, vocabulary, stack choices: the full picture of the project, without the re-brief.

FAI-PERSONAL.md

How you work

Your preferences, corrections, and style, carried across every project and every tool.

Readable markdown in ~/.fai/, versioned in git. Diff any two sessions. Roll anything back. History, not snapshots.

WORKS WITH EVERYTHING

One vault. Every tool you use.

fAIClaude CodeCursorCopilotGemini CLIWindsurfChatGPTCodexAntigravityJetBrains AIClineContinueGooseAiderAmazon QOpenCode

$ fai → context written for every registered agent, on every run, and counting

YOUR CHOICE OF MODEL

Local or frontier. Your vault doesn't care.

Local models

·$0 per month
·Never leaves your machine
·Fast for captures

Frontier models

·Stronger synthesis
·Complex reasoning
·Heavier distillation

Switch freely. Context persists either way.

OWNERSHIP

Fire us. Keep running.

Your context lives in plain files you own: readable, portable, git-versioned. Git democratized code ownership; fAI does the same for your AI's context. Leave whenever you like and take everything with you.

GET STARTED

Install in seconds. Session 1 captures. Session 2 remembers.

deno run -A "https://www.fathym.com/fai/install.deno"

$ fai

Free. Open source. Runs locally. Nothing leaves your machine.

Your AI finally knows you. Every tool. Every session.

Install fAI (free)When your team wants this → OpenX

PERSONAL AI WORKBENCH

YOU^AI