Agents now write a big share of the code. Understanding it is the new bottleneck. PR Lens maps any software system deeply and draws every pull request as an animated architecture and data flow diagram, posted as a comment on the PR, so you see what a change does before you read a line of it.

• See the blast radius. Which components a change touches: new in green, changed in amber, removed in red
• Watch the data flow. Animated arrows trace the request path your change created, step by step.
• Stay in GitHub. Toggle detail levels with checkboxes in the comment. No dashboard, no tab-switching.
• Not Mermaid. A bespoke renderer built to reduce cognitive overload.
• Zero setup. Install, open a PR, and the diagram appears in under a minute or two. Free for open source.

Built for reducing the cognitive load on reviewing AI-generated PRs.

Built by Coldtea, the control layer for AI-written software: understand every change, test it with AI agents, and monitor it in production.