Multi-language agent runtime and library for execution scope management, lifecycle events, and middleware on tool and LLM calls.

Testing and evaluation platform to chat, inspect, and debug MCP servers, MCP apps, and ChatGPT apps.

The full featured self-hosted Codex gateway, for teams, agents and you

Playwright for coding agents. Benchmark Claude Code, Codex, Gemini, and OpenCode on your own tasks - and test that your skills, MCP servers, and CLIs work when an agent uses them. Sandboxed YAML suites, activation checks, A/B experiments, CI gates.