Hi everyone, I built Ponytrail, a small CLI and bundled agent skill for making
AI coding sessions easier to inspect and undo.
The problem I kept hitting: git diff shows what changed, but not why the agent
changed it, what outcome it expected, what check it planned to run, or how to
roll back one specific action. Final summaries are often too coarse, especially
after a long coding session.
Ponytrail adds a small local trail around file mutations. Before an agent
creates, edits, moves, deletes, formats, or generates files, it records a
pre-change snapshot: action, purpose, reason, files, expected outcome, verification plan, rollback path
After the edit, it records a post-change snapshot with what changed, what checks
ran, and the result.
Everything is stored locally under .pony-trail/ as JSONL, session trees, and
small before/after file copies. It does not replace git. It is more like
per-action intent and rollback context for agent work.