Lightbox

A flight recorder for AI agents that captures every tool call with cryptographic integrity, solving the problem of non-deterministic failures and untraceable tool sequences. It is designed for developers and IT teams shipping agents to production, particularly those handling sensitive operations like moving money or touching production. The tool is positioned as an open-source, self-hosted solution that ensures tamper-proof logs and portable sessions, enabling debugging without re-running and proving compliance.

Key features

• Record every tool call
• Inspect any session
• Replay runs step-by-step
• Debug failures after the fact
• Compare executions across versions
• Tamper-proof logs with cryptographic hashing
• Portable self-contained sessions
• Verify log integrity
• Animated CLI playback
• Self-hosted on your infrastructure