How to review GitHub Copilot coding agent pull requests

How do I review GitHub Copilot coding agent pull requests

Open the pull request first, then read Copilot’s summary before you look at the code. GitHub’s Copilot code review feature reviews the pull request diff and leaves comments on GitHub.com, and the normal pull request review tools still apply, so you review the change the same way you would review a human’s work, only with Copilot’s comments as one input.

Start with the Files changed tab. GitHub’s review flow is built around reading the diff, leaving line comments, and then submitting a review as Comment, Approve, or Request changes. Copilot’s comments can be replied to, resolved, hidden, or reacted to, and your own review should be tied to specific lines or files whenever possible.

Treat Copilot as a reviewer, not as the final reviewer. GitHub says Copilot’s default review is a Comment review, not an Approve or Request changes review, so its output does not count as a required approval unless your configuration changes that behavior. The person reviewing the PR still needs to decide whether the change is ready to merge.

Check the parts people usually skip: the diff, the tests, and the assumptions behind the change. GitHub’s Copilot guidance says to request a review on the pull request, then read Copilot’s comments and suggested fixes. The useful human step is to verify that the change actually works in context, not just that the comments look reasonable.

Look for gaps between what Copilot reviewed and what your project needs. GitHub documents that Copilot code review can be customized with repository instructions, and that it can use agent skills or MCP servers to pull in extra context such as standards, docs, issue trackers, or internal systems. If those inputs are not configured, you should assume Copilot only saw the PR itself and the repository context GitHub provided.

When Copilot suggests a change, read the proposed edit before you apply it. GitHub says suggested changes are ready to apply in a couple of clicks, but the click is the last step, not the first. The common mistake is accepting a plausible fix without checking whether it breaks an interface, hides a bug, or moves the problem into another file.

Use re-review after you or the author update the branch. GitHub documents that Copilot will usually review a pull request once unless it is configured to review every push, and you can request another review manually from the Reviewers menu. That matters after a fix, because a stale Copilot comment can remain on a branch that has already changed.

If you are reviewing in an organization, check whether Copilot code review is enabled for that repo and whether it is allowed to review without a Copilot license. GitHub says org owners and repo owners can configure automatic reviews, and some orgs can enable Copilot code review for members without a license. Review behavior can therefore differ between repositories even when the PR screen looks the same.

A practical review sequence is simple. Read the PR summary, scan the changed files, open any test files or touched config files, run the code locally if the change is risky, then respond to Copilot’s comments only after you know whether they are useful. GitHub’s review docs emphasize reading context first, then reviewing the files and leaving comments or suggestions.

For a small bug fix, a good review might be one comment on the changed line, one note about missing tests, and a final decision. For a broader agent-generated change, the review should also cover naming, dependency updates, security-sensitive code paths, and any generated files that should not have changed. GitHub’s pull request review docs explicitly include code suggestions, approve, and request changes as part of the same review flow.

The inconvenient part is that Copilot can be right about a local issue and still wrong about the overall design. GitHub positions Copilot code review as fast feedback on pull requests, but it also gives teams the ability to tune review effort, add instructions, and use extra context sources. That is the signal that you still own the architecture decision, the release risk, and the final merge call.

If you want a workflow that stays stable, make the review checklist boring: does the diff match the issue, do the tests cover the change, do the comments point to exact lines, and does the branch still need another review after the next push. GitHub’s docs support that pattern directly, because the platform separates review comments, approval status, automatic review settings, and manual re-review.

For teams that use custom guidance, keep the instructions short and specific. GitHub says repository instructions can describe coding standards, review criteria, and general practices that Copilot should consider in every review. Long policy text is harder to maintain, and vague guidance usually turns into vague review comments that look helpful but do not change the merge decision.

If you want a second place to coordinate test exchange work around a PR, DevConnect keeps that separate from GitHub and focuses on reciprocal testing on owned property, not automation on third-party systems: https://devconnectplatform.com. For the PR itself, stay inside GitHub’s review flow, because that is where Copilot’s comments, your comments, and the merge decision all live.

The shortest version is this: open the PR, inspect the diff, verify the behavior, read Copilot’s suggestions critically, then approve, request changes, or ask for a re-review after the branch updates. GitHub’s documentation supports that exact loop across manual reviews, automatic reviews, and review lifecycle tuning.

FAQ

Do I have to accept Copilot’s suggestions No. Copilot can suggest edits, but you decide whether the suggestion fits the codebase, the tests, and the release risk. GitHub documents suggested changes as optional review feedback, not mandatory edits.

Can Copilot approve a pull request GitHub says Copilot usually leaves a Comment review by default. In configurations that allow it, Copilot can leave Approve reviews, but that is a setting choice, not the default behavior.

How do I get Copilot to review a PR again after new commits Request a re-review from the Reviewers menu, or configure automatic reviews to run on new pushes. GitHub documents both the manual re-review step and the option to review every push.

What if Copilot misses a problem Use the normal pull request review tools. Add a line comment, start a review, request changes if needed, and back that up with tests or reproduction steps. GitHub’s review docs are built for exactly that fallback.

Where do custom instructions fit in They shape the review Copilot gives, not the review you perform. GitHub says repository instructions can tell Copilot about coding standards, architecture defaults, and review criteria, which makes the automated review more relevant to your repo.