In Quantum Metric, blacklisted URLs refer to specific pages or endpoints that are intentionally excluded from data capture or analysis, typically for privacy, security, or noise reduction reasons. This is often used to prevent sensitive data (like login, payment, or PII-heavy pages) from being recorded in session replay or analytics. Instrumentation Key This key is the technical reference for this configuration item that is present in the JavaScript instrumentation. Referenced here for debugging purposes as it's not visible nor required in the UI. blacklistedURLs