name: Claude PR Description
on:
pull_request:
types: [opened]
permissions:
contents: read
pull-requests: write
id-token: write
jobs:
pr-description:
name: Generate PR Description
runs-on: ubuntu-latest
# Only run if PR body is empty or minimal
if: github.event.pull_request.body == '' || github.event.pull_request.body == null
steps:
- name: Checkout Repository
uses: actions/checkout@v4
with:
fetch-depth: 0
- name: Generate PR Description
uses: anthropics/claude-code-action@v1
with:
claude_code_oauth_token: ${{ secrets.CLAUDE_CODE_OAUTH_TOKEN }}
timeout_minutes: 5
prompt: |
REPO: ${{ github.repository }}
PR NUMBER: ${{ github.event.pull_request.number }}
PR TITLE: ${{ github.event.pull_request.title }}
BRANCH: ${{ github.event.pull_request.head.ref }}
This PR was opened without a description. Generate one based on the changes.
1. **Get the diff**:
```bash
gh pr diff ${{ github.event.pull_request.number }}
```
2. **Analyze changes** and create a description with:
- **Summary**: What this PR does (1-2 sentences)
- **Changes**: Bullet points of key changes
- **Testing**: How to test (if applicable)
- **Related Issues**: Link any related issues (if branch name contains issue number)
3. **Update the PR description**:
```bash
gh pr edit ${{ github.event.pull_request.number }} --body "DESCRIPTION"
```
Keep it concise. Focus on the "what" and "why", not the "how".
claude_args: '--allowed-tools "Bash(gh pr:*),Read,Glob,Grep"'
