Critic
A code-change viewer, backed by Y Combinator, built for reviewing work written by coding agents, presenting a plain-language narrative of each change alongside the diff and a running conversation with the agent.
Critic is a narrative code-change viewer built specifically for changes written by coding agents such as Codex and Claude. Each change page shows a before-and-after narrative describing what the change actually does, alongside its commits and the diffed files, and can be previewed locally or discussed in an attached chat.
Reviewers can ask the authoring agent questions directly on the change, for example about a specific design choice or an edge case, and those questions and their answers stay attached to the change as a record. Sign-in is through GitHub.