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patrickelectric merged 1 commit into from
Jul 3, 2026
+49 −0
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CI: block AI commits #3973

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49 changes: 49 additions & 0 deletions .github/workflows/block-ai-commits.yml
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Original file line number Diff line number Diff line change
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name: Block AI Commits

on:
pull_request:
types: [opened, reopened, synchronize]

concurrency:
group: block-ai-commits-${{ github.event.pull_request.number }}
cancel-in-progress: true

jobs:
check-ai-authorship:
runs-on: ubuntu-latest
permissions:
contents: read
pull-requests: read
steps:
- name: Checkout repository
uses: actions/checkout@v6
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with:
fetch-depth: 0

- name: Check commits for AI authorship
env:
BASE_SHA: ${{ github.event.pull_request.base.sha }}
HEAD_SHA: ${{ github.event.pull_request.head.sha }}
run: |
set -euo pipefail

# Exact AI-tool identities against commit author/committer emails and against Co-authored-by trailers.
signatures=(
'cursoragent@cursor\.com' # Cursor
'cursoragent@users\.noreply\.github\.com' # Cursor
'noreply@anthropic\.com' # Claude Code
'claude-code@anthropic\.com' # Claude Code
'noreply@openai\.com' # OpenAI Codex / ChatGPT Codex
'codex@openai\.com' # OpenAI Codex / ChatGPT Codex
'copilot@github\.com' # GitHub Copilot
)
pattern="$(IFS='|'; echo "${signatures[*]}")"

if git log --no-merges \
--format='%h %ae %ce %(trailers:key=Co-authored-by,valueonly,unfold)' \
"${BASE_SHA}..${HEAD_SHA}" | grep -iE "$pattern"; then
Comment on lines +42 to +44

@sourcery-ai sourcery-ai Bot Jul 2, 2026

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🚨 suggestion (security): Avoid leaking matching email addresses in logs by using grep -q

The current grep -iE "$pattern" prints matched lines, including abbreviated commit hashes and author/committer emails, into workflow logs, which is a privacy concern. Use grep -qiE "$pattern" (or add -q) so the check still blocks offending commits but only the error message is logged, not the matched line content.

Suggested change
if git log --no-merges \
--format='%h %ae %ce %(trailers:key=Co-authored-by,valueonly,unfold)' \
"${BASE_SHA}..${HEAD_SHA}" | grep -iE "$pattern"; then
if git log --no-merges \
--format='%h %ae %ce %(trailers:key=Co-authored-by,valueonly,unfold)' \
"${BASE_SHA}..${HEAD_SHA}" | grep -qiE "$pattern"; then

echo "::error::This pull request contains commits authored or co-authored by AI tools."
exit 1
fi

echo "No AI-authored or AI-co-authored commits found."
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