How does an AI coding agent work?

Watch “Add dark mode” become a change with evidence.

Add dark mode

One request. Follow the work, including the checks.

  • ○ Context
  • ○ Diff
  • ○ Tests
  • ○ Build
  • ○ UI
What’s real, what’s simplified

Real: A coding agent can read selected files, change code and use check results as feedback when it has permission.

Simplified: All files, changes and checks are curated visuals, not executed commands. The mobile example repairs an oversized theme button. Human approval is simulated; no AI, repository access or real publishing occurs.

Can vary: Different agents have different tools, checks and approval rules. Passing these example checks does not prove every possible behavior. This is a local visual, not a real agent or private reasoning transcript.

Sources

This is a curated browser-only simulation: no AI calls, uploads, repository access or real commands. Concise process summaries, not private reasoning transcripts.