⌬ OpenCode

⚠️ Early Development Notice: This project is in early development and is not yet ready for production use. Features may change, break, or be incomplete. Use at your own risk.

A powerful terminal-based AI assistant for developers, providing intelligent coding assistance directly in your terminal.

Overview

OpenCode is a Go-based CLI application that brings AI assistance to your terminal. It provides a TUI (Terminal User Interface) for interacting with various AI models to help with coding tasks, debugging, and more.

Features

Interactive TUI: Built with Bubble Tea for a smooth terminal experience
Multiple AI Providers: Support for OpenAI, Anthropic Claude, Google Gemini, AWS Bedrock, and Groq
Session Management: Save and manage multiple conversation sessions
Tool Integration: AI can execute commands, search files, and modify code
Vim-like Editor: Integrated editor with text input capabilities
Persistent Storage: SQLite database for storing conversations and sessions
LSP Integration: Language Server Protocol support for code intelligence
File Change Tracking: Track and visualize file changes during sessions
External Editor Support: Open your preferred editor for composing messages

Installation

Using the Install Script

# Install the latest version
curl -fsSL https://opencode.ai/install | bash

# Install a specific version
curl -fsSL https://opencode.ai/install | VERSION=0.1.0 bash

Using Homebrew (macOS and Linux)

brew install opencode-ai/tap/opencode

Using AUR (Arch Linux)

# Using yay
yay -S opencode-bin

# Using paru
paru -S opencode-bin

Using Go

go install github.com/opencode-ai/opencode@latest

Configuration

OpenCode looks for configuration in the following locations:

$HOME/.opencode.json
$XDG_CONFIG_HOME/opencode/.opencode.json
./.opencode.json (local directory)

Environment Variables

You can configure OpenCode using environment variables:

Environment Variable	Purpose
`ANTHROPIC_API_KEY`	For Claude models
`OPENAI_API_KEY`	For OpenAI models
`GEMINI_API_KEY`	For Google Gemini models
`GROQ_API_KEY`	For Groq models
`AWS_ACCESS_KEY_ID`	For AWS Bedrock (Claude)
`AWS_SECRET_ACCESS_KEY`	For AWS Bedrock (Claude)
`AWS_REGION`	For AWS Bedrock (Claude)

Configuration File Structure

{
  "data": {
    "directory": ".opencode"
  },
  "providers": {
    "openai": {
      "apiKey": "your-api-key",
      "disabled": false
    },
    "anthropic": {
      "apiKey": "your-api-key",
      "disabled": false
    }
  },
  "agents": {
    "coder": {
      "model": "claude-3.7-sonnet",
      "maxTokens": 5000
    },
    "task": {
      "model": "claude-3.7-sonnet",
      "maxTokens": 5000
    },
    "title": {
      "model": "claude-3.7-sonnet",
      "maxTokens": 80
    }
  },
  "mcpServers": {
    "example": {
      "type": "stdio",
      "command": "path/to/mcp-server",
      "env": [],
      "args": []
    }
  },
  "lsp": {
    "go": {
      "disabled": false,
      "command": "gopls"
    }
  },
  "debug": false,
  "debugLSP": false
}

Supported AI Models

OpenCode supports a variety of AI models from different providers:

OpenAI

GPT-4.1 family (gpt-4.1, gpt-4.1-mini, gpt-4.1-nano)
GPT-4.5 Preview
GPT-4o family (gpt-4o, gpt-4o-mini)
O1 family (o1, o1-pro, o1-mini)
O3 family (o3, o3-mini)
O4 Mini

Anthropic

Claude 3.5 Sonnet
Claude 3.5 Haiku
Claude 3.7 Sonnet
Claude 3 Haiku
Claude 3 Opus

Google

Gemini 2.5
Gemini 2.5 Flash
Gemini 2.0 Flash
Gemini 2.0 Flash Lite

AWS Bedrock

Claude 3.7 Sonnet

Usage

# Start OpenCode
opencode

# Start with debug logging
opencode -d

# Start with a specific working directory
opencode -c /path/to/project

Command-line Flags

Flag	Short	Description
`--help`	`-h`	Display help information
`--debug`	`-d`	Enable debug mode
`--cwd`	`-c`	Set current working directory

Keyboard Shortcuts

Global Shortcuts

Shortcut	Action
`Ctrl+C`	Quit application
`Ctrl+?`	Toggle help dialog
`?`	Toggle help dialog (when not in editing mode)
`Ctrl+L`	View logs
`Ctrl+A`	Switch session
`Ctrl+K`	Command dialog
`Esc`	Close current overlay/dialog or return to previous mode

Chat Page Shortcuts

Shortcut	Action
`Ctrl+N`	Create new session
`Ctrl+X`	Cancel current operation/generation
`i`	Focus editor (when not in writing mode)
`Esc`	Exit writing mode and focus messages

Editor Shortcuts

Shortcut	Action
`Ctrl+S`	Send message (when editor is focused)
`Enter` or `Ctrl+S`	Send message (when editor is not focused)
`Ctrl+E`	Open external editor
`Esc`	Blur editor and focus messages

Session Dialog Shortcuts

Shortcut	Action
`↑` or `k`	Previous session
`↓` or `j`	Next session
`Enter`	Select session
`Esc`	Close dialog

Permission Dialog Shortcuts

Shortcut	Action
`←` or `left`	Switch options left
`→` or `right` or `tab`	Switch options right
`Enter` or `space`	Confirm selection
`a`	Allow permission
`A`	Allow permission for session
`d`	Deny permission

Logs Page Shortcuts

Shortcut	Action
`Backspace` or `q`	Return to chat page

AI Assistant Tools

OpenCode's AI assistant has access to various tools to help with coding tasks:

File and Code Tools

Tool	Description	Parameters
`glob`	Find files by pattern	`pattern` (required), `path` (optional)
`grep`	Search file contents	`pattern` (required), `path` (optional), `include` (optional), `literal_text` (optional)
`ls`	List directory contents	`path` (optional), `ignore` (optional array of patterns)
`view`	View file contents	`file_path` (required), `offset` (optional), `limit` (optional)
`write`	Write to files	`file_path` (required), `content` (required)
`edit`	Edit files	Various parameters for file editing
`patch`	Apply patches to files	`file_path` (required), `diff` (required)
`diagnostics`	Get diagnostics information	`file_path` (optional)

Other Tools

Tool	Description	Parameters
`bash`	Execute shell commands	`command` (required), `timeout` (optional)
`fetch`	Fetch data from URLs	`url` (required), `format` (required), `timeout` (optional)
`sourcegraph`	Search code across public repositories	`query` (required), `count` (optional), `context_window` (optional), `timeout` (optional)
`agent`	Run sub-tasks with the AI agent	`prompt` (required)

Architecture

OpenCode is built with a modular architecture:

cmd: Command-line interface using Cobra
internal/app: Core application services
internal/config: Configuration management
internal/db: Database operations and migrations
internal/llm: LLM providers and tools integration
internal/tui: Terminal UI components and layouts
internal/logging: Logging infrastructure
internal/message: Message handling
internal/session: Session management
internal/lsp: Language Server Protocol integration

MCP (Model Context Protocol)

OpenCode implements the Model Context Protocol (MCP) to extend its capabilities through external tools. MCP provides a standardized way for the AI assistant to interact with external services and tools.

MCP Features

External Tool Integration: Connect to external tools and services via a standardized protocol
Tool Discovery: Automatically discover available tools from MCP servers
Multiple Connection Types:
- Stdio: Communicate with tools via standard input/output
- SSE: Communicate with tools via Server-Sent Events
Security: Permission system for controlling access to MCP tools

Configuring MCP Servers

MCP servers are defined in the configuration file under the mcpServers section:

{
  "mcpServers": {
    "example": {
      "type": "stdio",
      "command": "path/to/mcp-server",
      "env": [],
      "args": []
    },
    "web-example": {
      "type": "sse",
      "url": "https://example.com/mcp",
      "headers": {
        "Authorization": "Bearer token"
      }
    }
  }
}

MCP Tool Usage

Once configured, MCP tools are automatically available to the AI assistant alongside built-in tools. They follow the same permission model as other tools, requiring user approval before execution.

LSP (Language Server Protocol)

OpenCode integrates with Language Server Protocol to provide code intelligence features across multiple programming languages.

LSP Features

Multi-language Support: Connect to language servers for different programming languages
Diagnostics: Receive error checking and linting information
File Watching: Automatically notify language servers of file changes

Configuring LSP

Language servers are configured in the configuration file under the lsp section:

{
  "lsp": {
    "go": {
      "disabled": false,
      "command": "gopls"
    },
    "typescript": {
      "disabled": false,
      "command": "typescript-language-server",
      "args": ["--stdio"]
    }
  }
}

LSP Integration with AI

The AI assistant can access LSP features through the diagnostics tool, allowing it to:

Check for errors in your code
Suggest fixes based on diagnostics

While the LSP client implementation supports the full LSP protocol (including completions, hover, definition, etc.), currently only diagnostics are exposed to the AI assistant.

Development

Prerequisites

Go 1.24.0 or higher

Building from Source

# Clone the repository
git clone https://github.com/opencode-ai/opencode.git
cd opencode

# Build
go build -o opencode

# Run
./opencode

Acknowledgments

OpenCode gratefully acknowledges the contributions and support from these key individuals:

@isaacphi - For the mcp-language-server project which provided the foundation for our LSP client implementation
@adamdottv - For the design direction and UI/UX architecture

Special thanks to the broader open source community whose tools and libraries have made this project possible.

License

OpenCode is licensed under the MIT License. See the LICENSE file for details.

Contributing

Contributions are welcome! Here's how you can contribute:

Fork the repository
Create a feature branch (git checkout -b feature/amazing-feature)
Commit your changes (git commit -m 'Add some amazing feature')
Push to the branch (git push origin feature/amazing-feature)
Open a Pull Request

Please make sure to update tests as appropriate and follow the existing code style.

Files

README.md

Latest commit

History