Developer releases CLI tool Agent Pigeon to summarize coding agent session history

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A developer has released Agent Pigeon, an open-source command-line tool that parses local session histories from Claude Code and Codex and generates concise flight reports. The tool is designed to surface key activity — including edits, verification checks, and fail-to-pass sequences — from lengthy coding-agent runs in a scannable format. Users can invoke it with a single npx command, and a compare mode allows side-by-side review of two sessions. The developer noted several limitations, including unreliable read attribution for Codex and heuristic-based verification detection that may miss custom scripts. After encountering false positives during testing, live interruption features were dropped in favor of read-only observation of completed sessions.

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