Reviews what your coding agent did, not just the diff
Coding agents rewrite code you never asked them to touch, and the tests still pass. Sonah reads the agent’s Claude Code or Codex session along with the code, then shows on one page: whether each ask was done, what the agent decided on its own, which of its claims its own results contradict, and what is wrong in the code. Every quote is checked word for word. Runs locally through your own Claude login. No account, no telemetry. Free for individuals.
Sonah analyzes the actions of coding agents by reviewing their sessions alongside the modified code, highlighting discrepancies and errors. It operates locally using your Claude login, ensuring no account creation or telemetry is required, and is free for individual users.
A source that found nothing is a measurement. A source that has not run is a gap. Neither means the launch lacks the thing.