What check proves
Build output proves the project compiles. Check proves the behavior described by the feature spec can actually be observed.
Evidence
Depending on the project, evidence can include:
- Browser navigation, clicks, forms, and screenshots
- Console and network error inspection
- CLI output and exit status
- API requests and response bodies
- Generated files or downloaded artifacts
Report
Check reports pass or fail for every done-when criterion. A failed criterion includes the observed result and the next fix target. Check does not edit source code or commit fixes.
Relationship to try
/check is the agent-side proof pass. /try creates a human walkthrough with exact commands, routes, clicks, expected results, and signs that something is wrong.