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Add GitHub Action to auto-fix CI failures on Claude PRs
When the Validate workflow fails on a PR from a Claude branch (claude/*), this workflow automatically: 1. Checks if the last commit was an auto-fix (prevents infinite loops) 2. Extracts the failure details and error logs 3. Invokes Claude Code Action to analyze and fix the issues 4. Commits fixes directly to the same branch with [auto-fix] tag 5. Comments on the PR with the fix status The action supports fixing: - ruff formatting errors - ruff linting errors - pytest test failures Requires ANTHROPIC_API_KEY secret to be configured.
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‎.github/workflows/auto-fix-ci.yml‎

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name: Auto Fix CI Failures
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on:
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workflow_run:
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workflows: ["Validate"]
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types:
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- completed
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permissions:
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contents: write
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pull-requests: write
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actions: read
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issues: write
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id-token: write
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jobs:
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auto-fix:
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# Only run when:
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# 1. The Validate workflow failed
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# 2. There is an associated PR
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# 3. The branch was created by Claude (starts with 'claude/')
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if: |
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github.event.workflow_run.conclusion == 'failure' &&
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github.event.workflow_run.pull_requests[0] &&
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startsWith(github.event.workflow_run.head_branch, 'claude/')
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runs-on: ubuntu-latest
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steps:
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- name: Checkout code
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uses: actions/checkout@v4
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with:
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ref: ${{ github.event.workflow_run.head_branch }}
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fetch-depth: 10
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token: ${{ secrets.GITHUB_TOKEN }}
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- name: Check if last commit was auto-fix (prevent loops)
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id: check_loop
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run: |
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LAST_COMMIT_MSG=$(git log -1 --pretty=%s)
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if [[ "$LAST_COMMIT_MSG" == *"[auto-fix]"* ]]; then
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echo "skip=true" >> $GITHUB_OUTPUT
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echo "Last commit was an auto-fix, skipping to prevent loop"
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else
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echo "skip=false" >> $GITHUB_OUTPUT
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fi
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- name: Setup git identity
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if: steps.check_loop.outputs.skip != 'true'
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run: |
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git config --global user.email "claude[bot]@users.noreply.github.com"
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git config --global user.name "claude[bot]"
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- name: Get CI failure details
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if: steps.check_loop.outputs.skip != 'true'
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id: failure_details
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uses: actions/github-script@v7
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with:
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script: |
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const run = await github.rest.actions.getWorkflowRun({
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owner: context.repo.owner,
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repo: context.repo.repo,
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run_id: ${{ github.event.workflow_run.id }}
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});
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const jobs = await github.rest.actions.listJobsForWorkflowRun({
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owner: context.repo.owner,
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repo: context.repo.repo,
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run_id: ${{ github.event.workflow_run.id }}
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});
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const failedJobs = jobs.data.jobs.filter(job => job.conclusion === 'failure');
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let errorLogs = [];
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for (const job of failedJobs) {
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try {
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const logs = await github.rest.actions.downloadJobLogsForWorkflowRun({
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owner: context.repo.owner,
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repo: context.repo.repo,
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job_id: job.id
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});
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errorLogs.push({
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jobName: job.name,
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logs: logs.data.substring(0, 50000) // Limit log size
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});
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} catch (e) {
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errorLogs.push({
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jobName: job.name,
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logs: `Failed to retrieve logs: ${e.message}`
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});
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}
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}
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return {
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runUrl: run.data.html_url,
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failedJobs: failedJobs.map(j => j.name),
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errorLogs: errorLogs
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};
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- name: Fix CI failures with Claude
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if: steps.check_loop.outputs.skip != 'true'
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id: claude
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uses: anthropics/claude-code-action@v1
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with:
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prompt: |
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The CI workflow "Validate" has failed on a PR that you (Claude) contributed to.
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Please analyze the failure and fix the issues.
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## Failure Information
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- Failed CI Run: ${{ fromJSON(steps.failure_details.outputs.result).runUrl }}
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- Failed Jobs: ${{ join(fromJSON(steps.failure_details.outputs.result).failedJobs, ', ') }}
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- PR Number: ${{ github.event.workflow_run.pull_requests[0].number }}
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- Branch: ${{ github.event.workflow_run.head_branch }}
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- Repository: ${{ github.repository }}
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## CI Workflow Steps
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The Validate workflow runs these checks:
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1. `uv run ruff format --check src/ tests/` - Code formatting
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2. `uv run ruff check src/ tests/` - Linting
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3. `uv run pytest tests/ -v` - Tests
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## Your Task
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1. Analyze the error logs below to understand what failed
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2. Fix the issues in the code:
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- For formatting errors: Run `uv run ruff format src/ tests/`
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- For linting errors: Fix the code issues reported by ruff
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- For test failures: Fix the failing tests or the code they're testing
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3. Commit your fixes with a message that includes "[auto-fix]" tag
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4. Push the changes to the branch: ${{ github.event.workflow_run.head_branch }}
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IMPORTANT: Your commit message MUST include "[auto-fix]" to prevent infinite loops.
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Example: "Fix linting errors in parser module [auto-fix]"
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## Error Logs
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```
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${{ toJSON(fromJSON(steps.failure_details.outputs.result).errorLogs) }}
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```
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anthropic_api_key: ${{ secrets.ANTHROPIC_API_KEY }}
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claude_args: "--allowedTools 'Edit,MultiEdit,Write,Read,Glob,Grep,LS,Bash(git:*),Bash(uv:*),Bash(python:*),Bash(pytest:*),Bash(ruff:*)'"
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- name: Comment on PR with fix status
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if: always() && steps.check_loop.outputs.skip != 'true'
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uses: actions/github-script@v7
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with:
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script: |
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const prNumber = ${{ github.event.workflow_run.pull_requests[0].number }};
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const conclusion = '${{ steps.claude.outcome }}';
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const runUrl = '${{ github.server_url }}/${{ github.repository }}/actions/runs/${{ github.run_id }}';
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let body;
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if (conclusion === 'success') {
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body = `## CI Auto-Fix Attempted
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Claude has analyzed the CI failure and attempted to fix the issues.
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- **Fix workflow run**: ${runUrl}
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- **Original failure**: ${{ fromJSON(steps.failure_details.outputs.result).runUrl }}
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Please review the changes pushed to this branch.`;
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} else {
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body = `## CI Auto-Fix Failed
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Claude attempted to fix the CI failure but encountered issues.
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- **Fix workflow run**: ${runUrl}
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- **Original failure**: ${{ fromJSON(steps.failure_details.outputs.result).runUrl }}
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Manual intervention may be required.`;
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}
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await github.rest.issues.createComment({
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owner: context.repo.owner,
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repo: context.repo.repo,
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issue_number: prNumber,
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body: body
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});

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