# Codebuff: An AI Coding Assistant for Terminal-Based Code Generation

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Codebuff is an open-source AI coding assistant that allows developers to edit their codebase using natural language instructions directly from the terminal. It employs a multi-agent approach to understand projects and make precise changes, offering a powerful tool for automating coding tasks. A free, ad-supported version, Freebuff, is also available for immediate use.

GitHub: https://github.com/CodebuffAI/codebuff
OSRepos URL: https://osrepos.com/repo/codebuffai-codebuff

## Summary

Codebuff is an open-source AI coding assistant that allows developers to edit their codebase using natural language instructions directly from the terminal. It employs a multi-agent approach to understand projects and make precise changes, offering a powerful tool for automating coding tasks. A free, ad-supported version, Freebuff, is also available for immediate use.

## Topics

- TypeScript
- AI
- Code Generation
- Developer Tools
- CLI
- Multi-agent
- Open Source

## Repository Information

Last analyzed by OSRepos: Thu May 14 2026 12:50:26 GMT+0100 (Western European Summer Time)
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## Content

## Introduction
Codebuff is an open-source AI coding assistant designed to help developers generate and edit code directly from the terminal using natural language instructions. Instead of relying on a single large model, Codebuff coordinates specialized agents that work together to understand your project's architecture and make precise, validated changes. This multi-agent approach leads to better context understanding, more accurate edits, and fewer errors compared to single-model tools. For those seeking a free option, Freebuff offers a similar experience without subscriptions or credits, supported by ads.

## Installation
Getting started with Codebuff is straightforward. You can install the CLI tool globally via npm:

bash
npm install -g codebuff


Once installed, navigate to your project directory and run `codebuff` to start interacting with the AI assistant:

bash
cd your-project
codebuff


For the free, ad-supported version, Freebuff, the installation is similar:

bash
npm install -g freebuff
cd your-project
freebuff


If you plan to integrate Codebuff's capabilities into your applications, you can use the SDK:

bash
npm install @codebuff/sdk


## Examples
Codebuff simplifies complex coding tasks with simple prompts. Here are some examples of what you can ask Codebuff to do:

- "Fix the SQL injection vulnerability in user registration"
- "Add rate limiting to all API endpoints"
- "Refactor the database connection code for better performance"

Codebuff will intelligently find relevant files, make necessary changes across your codebase, and even run tests to ensure stability.

You can also create custom agents to define specific workflows. For instance, a `git-committer` agent can analyze changes and craft meaningful commit messages:

typescript
export default {
  id: 'git-committer',
  displayName: 'Git Committer',
  model: 'openai/gpt-5-nano',
  toolNames: ['read_files', 'run_terminal_command', 'end_turn'],

  instructionsPrompt:
    'You create meaningful git commits by analyzing changes, reading relevant files for context, and crafting clear commit messages that explain the "why" behind changes.',

  async *handleSteps() {
    // Analyze what changed
    yield { tool: 'run_terminal_command', command: 'git diff' }
    yield { tool: 'run_terminal_command', command: 'git log --oneline -5' }

    // Stage files and create commit with good message
    yield 'STEP_ALL'
  },
}


The SDK allows you to run agents programmatically within your applications:

typescript
import { CodebuffClient } from '@codebuff/sdk'

const client = new CodebuffClient({
  apiKey: 'your-api-key',
  cwd: '/path/to/your/project',
  onError: (error) => console.error('Codebuff error:', error.message),
})

const result = await client.run({
  agent: 'base',
  prompt: 'Add error handling to all API endpoints',
  handleEvent: (event) => {
    console.log('Progress', event)
  },
})


## Why use Codebuff
Codebuff offers several compelling advantages for developers:

*   **Custom Workflows**: Leverage TypeScript generators to combine AI generation with programmatic control. Agents can spawn subagents, handle conditional logic, and execute multi-step processes for highly tailored automation.
*   **Any Model on OpenRouter**: Unlike tools locked into specific models, Codebuff supports any model available on [OpenRouter](https://openrouter.ai/models){target="_blank"}. This flexibility allows you to choose from a wide range of models, including Claude, GPT, Qwen, and DeepSeek, optimizing for different tasks or utilizing the latest releases without platform restrictions.
*   **Reuse Published Agents**: Accelerate development by composing existing [published agents](https://www.codebuff.com/store){target="_blank"}. This modularity allows you to build upon community contributions and specialized tools.
*   **SDK for Integration**: Integrate Codebuff directly into your applications, CI/CD pipelines, or embed coding assistance into your products using the provided SDK.

## Links
*   **Documentation**: [codebuff.com/docs](https://codebuff.com/docs){target="_blank"}
*   **Community**: [Discord](https://codebuff.com/discord){target="_blank"}
*   **Issues & Ideas**: [GitHub Issues](https://github.com/CodebuffAI/codebuff/issues){target="_blank"}
*   **Contributing**: [CONTRIBUTING.md](https://github.com/CodebuffAI/codebuff/blob/main/CONTRIBUTING.md){target="_blank"}
*   **Support**: [support@codebuff.com](mailto:support@codebuff.com)