Skip to content

Metis documentation

Metis is an open-source workflow engine: draw a flow of steps, run it, and watch every step as it happens. Durable by Temporal, Apache-2.0, runs entirely on your machine.

New here? Start with the project README for the two quickstarts (Docker and the CLI), then come back for the deeper guides.

Guides

  • Architecture - the package map, the data flow, and the invariants that hold the system together.
  • Adding a node - how a new node type goes from catalogue entry to running handler.
  • Connectors - the data-driven integration model: definitions, credentials, and the operation catalogue.
  • Running tests - the unit suites, the real-Temporal e2e suites, and the six release gates.
  • AI tools (MCP) - let Claude and other MCP-capable tools browse the catalogue, build workflows and run them.

Node reference

Every built-in node type, generated from the catalogue that also powers the editor's palette and inspector Guide tab:

The project