Engine can be triggered in a number of ways:

Entering a task description directly in the Engine App

Adding a label with the repo specific Engine tag (find this tag on Engine’s repositories page)

Tagging @engine in a comment in your issues (Linear and Trello only)

Assign an issue to engine (Linear only)

Submitting a code review on an Engine PR

Tagging @engine-labs in a comment on any PR

Retry a task from the Engine app

Removing and re-adding a label in a ticket will re-trigger Engine