Show HN: Critic – Review code with the agent that wrote it

Critic is a change review platform that allows users to engage directly with the AI agent that wrote the code, helping to improve understanding of the code and its consequences. It works through a plugin for Codex or Claude Code, which asks the agent to write a narrative describing the change and highlight key sections. The platform is free to use and has helped its creators, Feyn, catch several incidents before they hit production.