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Fellow is a command-line AI assistant built by developers, for developers.

Unlike most AI tools that stop at suggesting code, Fellow goes a step further:
It executes tasks on your behalf. It reasons step-by-step, chooses commands from a plugin system, and edits files, generates content, or writes tests — autonomously.

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Table of Contents

1. Overview
   • What is Fellow?
   • Key Concepts
2. Usage
   • Installation
   • Running Fellow
3. Configuration
4. Commands
   • Built-in Commands
   • Custom Commands
5. Clients
   • OpenAI Client
   • Gemini Client
   • Custom Clients
6. Policies
   • Built-in Policies
   • Custom Policies