Harness

Agentic coding tool that lives in your terminal, understands your codebase, and executes routine tasks, explains code, and handles git workflows via natural language.

Lightweight coding agent from OpenAI that runs locally in your terminal, usable with a ChatGPT plan or API key.

A filesystem-first framework for durable AI agents — instructions, tools, skills, channels, and schedules live as conventional files you can inspect, extend, and operate.

Open-source AI agent that brings Gemini directly into your terminal, using a ReAct loop with built-in tools and MCP server support.

Brings the Copilot coding agent to the terminal, letting you build, debug, and understand code via natural language.

The agent that grows with you — a cross-platform AI agent that installs with one command and bundles its own runtime.

Command-line companion and TUI for Jules, Google's asynchronous cloud coding agent, to create and manage agent sessions that write tests, fix bugs, and open pull requests.

AWS's agentic command-line tool for building software through natural-language chat in your terminal, the successor to the Amazon Q Developer CLI.

A multi-model coding-agent harness that installs into OpenCode and the OpenAI Codex CLI.

Your own personal AI assistant for any OS and platform — installs via npm and runs as an always-on gateway daemon.

A self-extensible coding-agent harness and AI agent toolkit: an interactive coding agent CLI with a unified multi-provider LLM API, TUI, and web UI libraries.