> ## Documentation Index
> Fetch the complete documentation index at: https://docs.replicas.dev/llms.txt
> Use this file to discover all available pages before exploring further.

# Review

> Review GitHub pull requests and GitLab merge requests with an agent next to the diff.

Open **Review** in the sidebar to see pull requests that need your review and the ones you opened, from [GitHub](/features/github) and [GitLab](/features/gitlab). Paste a PR or MR link into the search to open any other one.

## Guided tour

Click **Start tour** on a PR. An agent reads the diff, writes a short summary, and orders the files from most to least important, with a plain-language explanation above each diff. Tests, lockfiles, and generated files are collapsed and marked viewed.

## Review chat

Each PR in a repository connected to Replicas has a chat with an agent that has the PR's branch checked out. If a Replicas workspace opened the PR, the chat runs in that workspace. Otherwise Replicas creates a **Review** workspace for it.

Highlight lines in a diff to quote them into the chat, then ask a question or ask for a change. The agent pushes fixes to the PR branch.

## Approve and merge

Approve, merge, close or reopen, mark ready or convert to draft, and update the branch from the review page. On GitHub PRs opened by a Replicas workspace, you can also ask the agent to resolve conflicts. Merges follow the repository's merge rules. Press `?` to see keyboard shortcuts.


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