Claude Hindsight: Observability Tool for Claude Code Sessions
What Claude Hindsight Does
Claude Hindsight is an observability tool built specifically for Claude Code sessions. It captures every tool call, every token, and every error from your Claude Code interactions and turns them into an explorable dashboard. The tool provides visibility into what Claude Code is actually doing during development sessions.
Key Details from the Source
The creator used Claude Hindsight to refactor their open-source project from proof-of-concept to production-ready in a single Claude Code conversation. The session involved:
- 78 conversation turns
- 733 tool calls
- 11 hours of continuous work
- $370 in Claude Code usage
- 692.8M cache read tokens
- Code changes: +9,915 lines added, -2,962 lines removed
The creator built Claude Hindsight for the Anthropic community and then used it to rebuild itself, creating a feedback loop where the monitoring tool helped build the monitoring tool.
Practical Benefits
When something broke during development, the creator could see exactly which tool call failed and why. For code quality auditing, they could browse every Read, Edit, and Bash call Claude made. To verify refactors didn't break anything, they could open the session in Chrome and click through nodes in the dashboard.
Technical Details
Claude Hindsight is:
- Open source
- Single binary
- Built with Rust and React
- Available via Homebrew:
brew tap codestz/tapfollowed bybrew install claude-hindsight
The GitHub repository contains the full source code and the pull request showing the refactoring work: https://github.com/codestz/claude-hindsight/pull/34
This type of observability tool addresses a growing need for visibility into AI coding agent sessions, allowing developers to understand exactly what's happening during complex refactoring or development sessions.
📖 Read the full source: r/ClaudeAI
👀 See Also
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