OpenABCode
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Overview

OpenABCode is an LLM-routing coding agent that dynamically routes tasks to the best-suited models:

  • Google ecosystem–related coding tasks are routed to Gemini.

  • Code review and testing are routed to ChatGPT.

  • General coding tasks are routed to Claude.

Quick start

Install OpenABCode with npm:

npm install -g --ignore-scripts @openabcode/coding-agent

--ignore-scripts disables dependency lifecycle scripts during install. OpenABCode does not require install scripts for normal npm installs.

On Linux or macOS, you can also use the installer:

curl -fsSL https://openabcode.com/install.sh | sh

To uninstall openabcode itself, use npm for curl and npm installs:

npm uninstall -g @openabcode/coding-agent

For pnpm, Yarn, or Bun installs, use the matching global remove command: pnpm remove -g @openabcode/coding-agent, yarn global remove @openabcode/coding-agent, or bun uninstall -g @openabcode/coding-agent.

Then run it in a project directory:

openabcode

Authenticate with /login for subscription providers, or set an API key such as ANTHROPIC_API_KEY before starting openabcode.

For the full first-run flow, see Quickstart.

Start here

  • Quickstart - install, authenticate, and run a first session.
  • Using OpenABCode - interactive mode, slash commands, context files, and CLI reference.
  • Providers - subscription and API-key setup for built-in providers.
  • Security - project trust, sandbox boundaries, and vulnerability reporting.
  • Containerization - sandbox openabcode with Gondolin, Docker, or OpenShell.
  • Settings - global and project settings.
  • Keybindings - default shortcuts and custom keybindings.
  • Sessions - session management, branching, and tree navigation.
  • Compaction - context compaction and branch summarization.

Customization

  • Extensions - TypeScript modules for tools, commands, events, and custom UI.
  • Skills - Agent Skills for reusable on-demand capabilities.
  • Prompt templates - reusable prompts that expand from slash commands.
  • Themes - built-in and custom terminal themes.
  • OpenABCode packages - bundle and share extensions, skills, prompts, and themes.
  • Custom models - add model entries for supported provider APIs.
  • Custom providers - implement custom APIs and OAuth flows.

Programmatic usage

Reference

  • Session format - JSONL session file format, entry types, and SessionManager API.

Platform setup

Development

  • Development - local setup, project structure, and debugging.