Automating GitHub PR Code Reviews with AI System Prompts & Actions

2026-10-04 • 6 min read • AI Prompts • By Masbin Digital Labs

Manual pull request review is one of the biggest bottlenecks in modern engineering teams. Setting up an AI-driven inline review bot cuts review cycles from 48 hours to under 3 minutes.

1. Enforcing Security Sanitization

System prompts configured to scan for OWASP Top 10 vulnerabilities catch unescaped SQL injections and hardcoded secrets before code merges into staging.

2. Constructive Senior Feedback Persona

Framing the prompt as an empathetic Staff Engineer ensures comments are educational and actionable rather than nitpicky or dismissive.

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