Skip to main content
After implementation, Twill verifies the changes meet requirements and pass quality checks.

Verification Steps

  • Build check: Ensures the project builds successfully
  • Test execution: Runs your test suite
  • Lint validation: Checks code style and standards
  • UI verification: Browses flows and captures screenshots or screen recordings when the change needs visual proof
Agent logs showing verification steps and screenshots

Proof of Work

Twill attaches proof artifacts to pull requests and task conversations so reviewers can verify the implementation works. Depending on the task, that can include test results, logs, screenshots, live previews, and browser recordings. For simple UI checks, Twill may attach screenshots. For multi-step browser flows, Twill may attach a screen recording instead. Recorded .mp4 and .webm artifacts render inline in Twill task conversations.
Pull request with proof of work attached

Auto-Fix

When verification fails, the agent can automatically attempt fixes. See CI Fixes for details.