Terminal
Agents and tools · command line, CLI
A window where commands are typed as text, also called the CLI (command-line interface). An AI CLI agent works right in the terminal: it sees the same files and programs you do and runs them itself — tests, builds, git. Access is limited by permission rules.
AI CLI agents
- Claude Code · Anthropic’s agent: you start it with the claude command in the project folder; on a Claude plan or pay-as-you-go API.
- Codex CLI · OpenAI’s agent: the codex command, included in ChatGPT plans.
- OpenCode · a free open-source agent: works with models from many vendors and with local ones; you pay only for the model.
- Gemini CLI · Google’s open-source agent on Gemini models; since June 18, 2026 it works only for companies and paid API keys.
- Antigravity CLI · Google’s agent; since June 18, 2026 it replaced Gemini CLI for individual users, and it is closed-source itself.
- Hermes Agent · Nous Research’s free open-source agent: runs on your server with any model; you control it from the terminal or through messengers.
- How it differs from an agent in an IDE · no editor needed: you review edits in your own editor or in git, and you can run the agent from scripts.
Source: Wikipedia: Command-line interface
Where it appears · 2
- Claude in Chrome · Harness
- Claude Code, Codex, Cursor and Hermes Agent · Harness