Build with Codai

Your terminal. Your models. A coding agent that keeps you in control.

Codai is an open source coding agent for your terminal. Explore a codebase, plan a change, and work across files with explicit approval for writes and commands.

Install Codai, connect a model, and open your project.

Start your first session

Explore read-only, then switch to Agent when you are ready to make changes.

Plan before you act

From idea to working code

Install

Use the .NET SDK 10.0 or later to install the terminal tool.


dotnet tool install --global Codai

Connect

Choose your provider and model through the guided setup.


codai auth

Build

Start a session from your project directory.


codai code

Start with codai --mode plan "Explain this project" to explore without changing files or running shell commands.

Make it your own

Give Codai reusable instructions for your team’s workflows.

Skills

Connect external tools through the same approval policy.

MCP servers

Extend tools and lifecycle hooks with .NET plugins.

Plugins

Check supported ACP behavior and current compatibility limits.

Editor integration

Stay in control

Plan mode reads and searches without writing files or running commands. Agent mode can edit files and, when shell access is enabled, run commands under your approval policy. Long sessions compact context; codai code --continue resumes a previous session.

Sessions discover project files on demand instead of building a full-project index at startup. Project guidance still reaches the model before it starts work.

Read the Agent mode guide for permissions, terminal controls, recovery, and session commands. See the roadmap for work still in progress.