December

December is a coding agent that works right in your terminal. It understands your code, writes new code, and runs commands to help you finish your work faster.

• Writes code for you: Ask it to build a feature or fix a bug, and it will write the code directly.
• Reads your whole project: It scans your files and folders so it always knows what you are working on.
• Runs commands: It can safely search files, run tests, and execute commands in your terminal.
• Use your own AI: Connect your own API keys for OpenAI, Anthropic, Gemini, or OpenRouter, or log in via December to use the December wallet.

Quick Start

You can install December using npm or bun:

Using npm:

npm install -g @trydecember/cli

Using bun:

bun install -g @trydecember/cli

Run december in your project folder to start:

cd your-project-folder
december