Build
Two endpoints
The run surface acts with tools, the Build surface authors the agents that act.
Spinrun exposes two MCP endpoints on the same origin, and they answer different questions.
https://spinrun.ai/mcp— the run surface. Tools from the apps a workspace has connected: search for one, call it. This is what an agent uses to act.https://spinrun.ai/mcp/build— the Build surface. It authors the agents and workflows that later act: list, get, validate, put, delete, and start a test run. Its REST twin lives underhttps://spinrun.ai/api/build, with the same auth and the same documents.
A client installs each one separately. The dashboard's client pages and spinrun gateway <client> --build print the Build variant, and spinrun install <client> --build writes it beside the run entry under the key spinrun-build.