Mcp
A deterministic verification engine for agents. Proves a fix: fails on the old code, passes on new.
- Transport
- Not stated
- Package
- —
- Registry id
- io.github.fetchsandbox/mcp
No install snippet on purpose. A working MCP config is a command, its arguments and an environment block — the last two are where API keys live, so this catalogue never stores them and cannot publish them. Follow the link above for the authors' own instructions.
It runs the same scenario on old and new code to verify fixes. It works with Cursor, Claude, Codex CLI, and more. It offers pre-built support for Stripe, GitHub, OpenAI, Paddle, Twilio, and more.
It verifies webhook delivery, workflow state, contracts, and real integration behavior before production. It simulates real API behavior like webhooks, retries, failed requests, and async events without mock servers.
Summary drafted from the project's own website. Every sentence is backed by text on that page and was reviewed before publishing.