The Git Secrets Pre-Commit Scanner prevents credential leaks by analyzing git diffs before commits are finalized. It combines truffleHog high-entropy string detection with configurable regex patterns for API keys, tokens, passwords, and private key formats across 40+ service providers including AWS, GCP, Stripe, and GitHub. The agent installs as a pre-commit hook using the pre-commit framework, scanning staged changes in real-time with sub-second performance. It supports allowlisting known safe patterns via .gitallowed files, scanning entire repository history for retroactive detection, and generating remediation scripts that rotate compromised credentials. Integration with GitHub push protection API enables server-side blocking as a secondary defense layer. The scanner handles binary file detection, large file skipping, and produces structured JSON output for security dashboard ingestion.