Consumer Agent Testing Tool (CATT)

Free

Open-source test tool that runs a scripted or model-driven agent against your MCP server, MCP app, website or HTTP API, then checks what the service actually did, records sealed evidence and compares results across builds. It includes surrogate hosts that approximate how consumer assistants use connectors, and can run in CI.

Open source
Use case
Agent frameworks
Pricing tier
Free
Pricing note
Open source (MIT).
Skill level*
Advanced
License
MIT
Added
2026-10-24
Sources checked

* Skill level and vibe badges are our own editorial labels. Pricing and plans change often; always confirm on the official site. Last checked 2026-10-21.

Similar tools