LoopBack is an open source Node.js framework that enables developers to quickly create APIs and microservices composed from backend systems such as databases and SOAP or REST services.
Blocks loopback addresses as part of SSRF protection, preventing agents from accessing internal loopback interfaces and local network resources for security purposes.
URL reality check for AI agents — returns HTTP status, SHA-256 content hash, classification, readability score, title, and wayback-machine fallback when dead, cached 10 minutes at $0.001 per call.