Installation

Prerequisites

An AI coding tool - Cursor, Claude Code, GitHub Copilot, or any AI you prefer
git ≥ 2.41 - installed automatically by the script if missing; powers fai's local vault storage

fai layers on top of your AI tool. It gives your AI memory that compounds.

Pick your platform - Deno and git are installed for you automatically if needed:

Windows (PowerShell):

iwr -useb https://www.fathym.com/fai/install.ps1 | iex

macOS / Linux:

curl -fsSL https://www.fathym.com/fai/install.sh | sh

Already have Deno? Run directly:

deno run -A jsr:@fathym/fai/install

fai

The first time, fai asks two quick questions: which model distills your sessions and which one indexes them. Then you're building.

On that first run:

Your workbench was created
Your context was initialized
Your AI is connected and ready
Your synthesis and embeddings providers were chosen
An anonymous device ID was created. fai sends usage analytics by default - see Privacy and Telemetry →

That's all the configuration there is. Your workbench set itself up based on your project. From here, everything you do compounds.

No setup questions. fai picks up your sessions, and your AI has full context from last time. Tomorrow, next week, next month - your AI remembers.

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