Writing clear pull request descriptions takes time. Many developers skip them or write vague summaries. GitHub Copilot can automatically generate a pull request summary based on the code changes. This feature saves time and keeps your team informed. This article explains how to set up Copilot for pull request summaries and what limits you should know.
Key Takeaways: GitHub Copilot Pull Request Summaries
- GitHub Copilot Enterprise or Business plan: Required to use the pull request summary feature. Free or Teams plans do not include it.
- Pull request page > Copilot icon > Generate summary: Click this button to create a description from your branch changes.
- Character limit and context scope: Copilot reads only the diff of changed files, not the full repository. Summaries may miss cross-file dependencies.
What the Pull Request Summary Feature Does
GitHub Copilot can write a summary of your pull request. It analyzes the code changes in the branch compared to the base branch. The generated text includes a title, a bullet list of changes, and sometimes a list of affected files. This feature is available only on GitHub.com, not on GitHub Enterprise Server or GitHub AE.
You need a Copilot subscription that includes pull request summaries. The feature is part of Copilot Enterprise and Copilot Business. It is not available in the free Copilot Individual plan or the Copilot for Individuals with GitHub Free plan. Your organization must enable Copilot for pull requests in the policy settings.
Prerequisites
Before you can generate a pull request summary, confirm these items are in place:
- Your GitHub account has a Copilot Enterprise or Business seat assigned.
- The repository is hosted on GitHub.com, not a private server.
- Your organization has not disabled the Copilot pull request feature in the policy.
- You are viewing the pull request on the GitHub web interface, not the mobile app or API.
Steps to Enable and Use Pull Request Summaries
Follow these steps to activate the feature and generate your first summary.
- Verify your Copilot plan
Go to your GitHub account settings and check the Copilot section. Confirm your plan is Enterprise or Business. If you see Individual, you cannot use pull request summaries. - Check organization policy
Ask your GitHub organization admin to navigate to Settings > Copilot > Policies. Ensure the toggle for “Allow Copilot to generate pull request summaries” is enabled. This is off by default in some organizations. - Open a pull request on GitHub.com
Create a new pull request or open an existing one. The feature works only on the web interface. It does not work in GitHub Desktop, Visual Studio Code, or the mobile app. - Click the Copilot icon in the pull request text box
Look for the Copilot icon, which looks like a small sparkle or star, inside the pull request description text box. It appears on the right side of the toolbar above the text area. - Select Generate summary
A dropdown menu appears. Click “Generate summary” or “Summarize changes.” Copilot reads the diff and writes a draft description into the text box. - Review and edit the generated summary
Read the text. Copilot may include incorrect assumptions or miss context. Edit the title, remove irrelevant bullet points, and add any missing details about the purpose of the change. - Save the pull request
Click the green “Create pull request” or “Update pull request” button. The summary becomes part of the pull request history.
Common Issues and Limits
Copilot generates a generic summary that does not match the actual changes
This happens when the diff is large or the code changes are spread across many files. Copilot summarizes the most frequent patterns but may miss the core intent. Edit the summary manually. Break large pull requests into smaller ones to improve accuracy.
The Copilot icon does not appear in the pull request text box
The icon is missing because your plan does not include the feature, or your organization has disabled it. Check your Copilot plan in account settings. Contact your GitHub admin to confirm the policy is enabled. The icon also does not appear when using the mobile browser view.
Copilot only sees the diff, not the full repository
This is a design limit. Copilot analyzes only the lines that changed. It does not read files that were not modified. If your pull request depends on code in unmodified files, the summary may be incomplete. Add context manually in the description.
Summaries are not generated for draft pull requests
Draft pull requests are intended for work in progress. Copilot does not offer the generate summary option for draft pull requests. Convert the pull request to a regular pull request to use the feature.
The generated summary contains code snippets or file paths that are no longer accurate
If you push new commits after generating the summary, the diff changes. Copilot does not automatically update the summary. Regenerate the summary by clicking the Copilot icon again and selecting Generate summary. The old text is replaced.
Copilot Pull Request Summary vs Manual Summary: Key Differences
| Item | Copilot Generated Summary | Manual Summary |
|---|---|---|
| Time to write | Instant | 5 to 15 minutes depending on diff size |
| Context awareness | Only the diff | Full repository and business logic |
| Accuracy for large diffs | Low to medium | High |
| Requires editing | Almost always | Rarely |
| Available on mobile | No | Yes |
Use Copilot summaries as a starting point. They save time but do not replace a thorough manual review. For small pull requests with one or two files, the generated text is often good enough. For complex changes, write the summary yourself or heavily edit the Copilot output.
You can now enable and use GitHub Copilot to generate pull request summaries. Remember that the feature works only on GitHub.com with a Business or Enterprise plan. For the best results, keep pull requests small and always review the generated text before saving. If you work with multiple repositories, ask your admin to enable the feature at the organization level so all teams benefit.