[prompt-analysis] Copilot PR Prompt Analysis - 2026-10-23

[github-actions[bot]]

🤖 Copilot PR Prompt Pattern Analysis - 2026-10-23

Summary

Analysis Period: Last 30 days
Total PRs: 587 | Merged: 492 (83.8%) | Closed: 93 (15.8%) | Open: 2

Prompt Categories and Success Rates

(Categorized by title keywords; categories can overlap.)

Category	Total	Merged	Success Rate
Bug Fix	65	56	86.2%
Feature Addition	89	73	82.0%
Refactoring	14	11	78.6%
Documentation	32	28	87.5%
Testing	18	15	83.3%

Prompt Analysis

✅ Successful Prompt Patterns

• Average prompt length: 177.9 words
• Examples: PR docs: clarify directory restrictions for reusable agentic workflows #71451 docs: clarify directory restrictions for reusable agentic workflows → Merged; PR Fall back to pinned Copilot CLI when live compatibility targets lack trusted checksums #71339 Fall back to pinned Copilot CLI when live compatibility targets lack trusted checksums → Merged; PR Document admission setup and server-size AIC policies #71323 Document admission setup and server-size AIC policies → Merged

❌ Unsuccessful Prompt Patterns

• Average prompt length: 197.0 words
• Examples: PR Add dual-role work queue smoke workflow #71340 Add dual-role work queue smoke workflow → Closed; PR Support team-configurable default models #70349 Support team-configurable default models → Closed; PR Generate GitHub-native workflow lockfiles during compilation #70345 Generate GitHub-native workflow lockfiles during compilation → Closed

Key Insights

• Narrow scope wins: docs and bug-fix PRs merge at ~86-88%, while broad feature work (new workflows, new config surfaces) is closed more often.
• Length: closed PRs have slightly longer prompts (197 vs 178 words); a ~10% difference, weak signal.
• Data quality: no PRs had empty bodies. Refactoring has a small sample (n=14).

Recommendations

1. DO: Scope prompts to a single, well-defined behavior or doc change.
2. DO: Name specific files, errors, or behaviors for bug fixes.
3. AVOID: Large feature prompts bundling new workflows/config surfaces; split them.

Historical Trends

Date	PRs	Success Rate
2026-10-23	587	83.8%
2026-10-22	200	85.1%
2026-10-21	633	83.9%

Trend: Merge rate stable around 84-85%.

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Generated by Copilot PR Prompt Analysis (Run: 40021343460)

Generated by 🔍 Copilot PR Prompt Pattern Analysis · copilot · auto · ~14 AIC · ⌖ ~1 AIC · ⊞ 11.6K · ◷

• expires on Oct 24, 2026, 12:48 PM UTC-08:00

[github-actions[bot]]

This discussion has been marked as outdated by Copilot PR Prompt Pattern Analysis.

A newer discussion is available at Discussion #71709.