Harness AI Agent Skills

OpenAI's coding-agent CLI. Runs Codex models with tool use, shell execution, and file editing. Ships with the Responses API integration so context management happens inside the model call.

Cursor's coding-agent runtime built into the Cursor IDE. Reads .cursorrules, MCP servers, and Cursor commands. Available as CLI (cursor-agent) and inside the editor.

Google's coding-agent CLI running Gemini models. Terminal-based, supports MCP servers, and integrates with the Google Cloud agent stack.

AI pair programming in your terminal. Model-agnostic harness that speaks to Claude, GPT, Gemini, and local models. Best-in-class git integration with auto-commits per edit.

Multi-harness control plane for Claude Code, Codex, Cursor, and OpenCode. Quota-aware rotation across multiple subscriptions, shared thread state, and local-first execution.

Open-source coding-agent harness with model-agnostic backend. Terminal-first, supports Claude, GPT, and local models. MCP-native.

Agent harness for complex codebases. Wraps Codex, OpenCode, and other coding-agent CLIs with token-efficient context management for long-running work.

Autonomous coding-agent harness that runs as a VS Code extension. Reads cline_rules, supports MCP, and executes multi-step tasks with human-in-the-loop approval.

Mission Control for Claude Code. Native desktop app to browse, search, and drive Claude Code sessions with live status and diff review.

Terminal UI to manage AI coding-agent sessions (Claude Code, OpenCode, Codex, Grok, Gemini CLI) in tmux. Live status, group tree, quick prompts, diff review.

Open-source visual workspace and harness for Claude Code and Codex. Browser-based UI over the terminal harness with session sharing and review tooling.

Anthropic's official coding-agent CLI. Runs Claude in your terminal with tool use, file operations, and shell access. The reference harness that skills, sub-agents, hooks, and slash commands are built for.