FetchSandbox for Claude.ai
io.github.fetchsandbox/mcp
A deterministic verification engine for agents. Proves a fix: fails on the old code, passes on new.
client:Claude.ai
transport:streamable-http
runtime:npm
tools:17
Install FetchSandbox in Claude.ai
Settings → Connectors → Add custom connector
https://fetchsandbox.com/mcp/v1Claude on the web takes a remote URL and completes OAuth in the browser. For a packaged server use Claude Desktop or Claude Code instead. Claude.ai docs