Spotlight by Backplanes: Session analysis tool for Claude Code and Codex agents
By
Nick Vlku
Crispy enough to crunch, soft enough to enjoy. A good bake.
Summary
Spotlight by Backplanes is a tool that reads Claude Code and Codex sessions to provide session reports and analysis. It goes beyond simple session replay by offering an interpretation layer that identifies retry storms, redundant tool loops, repeated lookups that should have been cached, and other engineering insights. Every finding in the report must cite the specific moment in the session it came from. The tool helps developers improve their code by showing what agents actually did and how to get better with each session.
Key quotes
· 3 pulledThe session replay is the easy part; the interpretation layer is the product.
Every finding has to point at the specific moment in the session it came from. If it can't cite the event, it doesn't ship.
It surfaces retry storms, redundant tool loops, repeated lookups that should have been cached.
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