Consumer-agent surrogate testing for MCP servers, apps, browsers and APIs, with service-side outcome checks and sealed evidence
View on GitHub ↗Consumer Agent Testing Tool (CATT) tests how an assistant uses your service. Run a scripted or model-driven agent against an MCP server, an MCP app, a website or an HTTP API. Check what the service did, inspect the evidence, and compare results across builds.
Muse is the initial emulation and testing target. CATT models Meta's Muse through a local test host. Instinct and other assistants are planned for later releases. CATT does not yet emulate them. The model that drives a trial is separate from the assistant platform being emulated.
Contributing Security Changelog MIT license
A test host, not Muse. CATT is a surrogate: it approximates an assistant's host, not its private implementation. A passing test does not certify compatibility with Muse or any hosted assistant. Each Muse-specific behavior has a recorded basis: documented, unofficial, assumed or unknown. This project is not affiliated with or endorsed by Meta, OpenAI or Anthropic.
Lane Command What it checks Status and scope --- --- --- --- MCP connectors connector-run SCENARIO Use the server's tools, apply account and approval rules, protect private values, and check the service's recorded outcome and the agent's answer. Supported. Muse-like surrogate; see connector lane. Connector extensions connector-run SCENARIO with extensions: Routes, memory, custom API clients, browser actions, wallet cards, background jobs, untrusted content, channel limits and simulated users. Supported with the lane. usersimulator is exploratory and cannot run in scripted tests or decision contracts. See extensions. Scenario scaffolding
From the project README.
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