github copilot workflow: automate PR comment summaries with ChatGPT
I want to auto-generate clear PR summaries and reviewer checklists when PRs open, combining Copilot suggestions with ChatGPT for more context-aware summaries. Need webhook/action design, prompt templates, and safeguards to prevent hallucinated code suggestions.
Best tools for this use case
Based on the workflow in this discussion, these tools are useful starting points to review.
GitHub Copilot
Leading coding assistant for day-to-day developer acceleration.
Claude
Excellent for careful reasoning, long-form thinking and structured analysis.
Cursor
AI-native coding environment built for deeper assisted development across real codebases.
Answers
Approved replies, operator insight, and tactical follow-up from the community.
Webhook/action design: on pull_request opened/edited -> GitHub Action checks out code, generates a compact diff-summary (files, modified functions, changed line ranges, failing tests), then calls ChatGPT for a summary.
Prompt template (short):
'PR_TITLE:{title}nDIFF:{summary}nTESTS:{failed_tests}nTASK: produce a 2–3 sentence summary + reviewer checklist (security, API, tests, perf). Cite changed files/line ranges.'
Safeguards: require diff citations, run CI/tests before posting, reject suggestions that introduce code not present, and add an "AI-reviewed" label for human sign-off.