Nosey Parker

Nosey Parker is an open-source command-line secrets scanner developed by Praetorian that combines regular expression-based pattern matching with machine learning techniques to detect hardcoded secrets including API keys, passwords, tokens, cryptographic keys, and credentials within textual data, files, directories, and complete Git repository histories with high accuracy and minimal false positives. The tool provides exceptional performance with scanning speeds of hundreds of megabytes per second, efficient deduplication that reduces review workload by over 100x, and 146 carefully curated detection rules optimized through offensive security engagements, enabling security professionals, penetration testers, and developers to proactively identify and remediate exposed secrets before they can be exploited by attackers.