PromptLock is described as 'AI firewall that detects prompt injection attacks and redacts PII/PHI with compliance context (HIPAA, GDPR, PCI). Single API endpoint with sub-100ms response time' and is a large language model (llm) tool in the security & privacy category. There are 1 alternatives to PromptLock, not only websites but also apps for a variety of platforms, including Mac, Windows, Linux, Cursor and Claude Code apps. The best PromptLock alternative is Pipelock, which is both free and Open Source.
Pipelock is an open-source agent firewall written in Go. It runs as a sidecar or local service between an agent and the network, scanning HTTP, WebSocket, and Model Context Protocol traffic through an 11-layer pipeline.
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