PromptLock.io
AI firewall that detects prompt injection and redacts PII with compliance context.
A startup from Cincinnati, the United States that is founded by Matthew Snyder.
AI firewall that detects prompt injection and redacts PII with compliance context.
A startup from Cincinnati, the United States that is founded by Matthew Snyder.
This page is designed to help you find out whether PromptLock.io is good and if it is the right choice for you.
PromptLock is an AI security API that protects applications from prompt injection attacks and sensitive data leaks before they reach your LLM.
What it does:
What makes it different:
PromptLock is the only AI firewall that understands compliance context. It automatically applies the right redaction policy (HIPAA, GDPR, or PCI) based on the type of data detected - no manual rule configuration needed.
Built for developers:
Ideal for:
Pricing: Free tier available. Paid plans from $49/month.
Listed in
Prompt Injection Detection
Blocks jailbreaks, instruction overrides, and role manipulation attacks
PII/PHI Redaction
Replaces sensitive data with compliance-tagged placeholders
Compliance Frameworks
HIPAA, GDPR, PCI-DSS context-aware policies
Risk Scoring
Real-time threat assessment from 0-100
API Response Time
Sub-100ms processing
Free Tier
3,000 requests/month included
PromptLock is the only AI firewall that understands compliance context. It doesn't just detect sensitive data—it automatically applies the right redaction policy (HIPAA, GDPR, or PCI) based on the type of data detected, all in a single API call. No manual rule configuration required.
PromptLock is the only AI firewall that understands compliance context. It doesn't just detect sensitive data—it automatically applies the right redaction policy (HIPAA, GDPR, or PCI) based on the type of data detected, all in a single API call. No manual rule configuration required.
PromptLock is built for startups and SMEs, not enterprises. You get production-ready security in minutes with straightforward pricing ($49-199/month), a generous free tier, and no-code integrations for n8n, Flowise, Bubble, and Retool. No sales calls, no enterprise contracts, no DevOps required.
PromptLock was born from seeing the same problem repeatedly: AI apps leaking sensitive data to LLMs or getting jailbroken by prompt injection attacks. Existing solutions were either enterprise-only with lengthy sales cycles, or open-source tools requiring significant DevOps overhead. We built PromptLock to give smaller teams the same protection with a simple API they can integrate in an afternoon.
PromptLock uses a fine-tuned DeBERTa model for prompt injection detection, spaCy-based NER for PII/PHI identification, and custom compliance logic for context-aware redaction. The API runs on a Python backend with Redis for rate limiting and GPU-accelerated inference for fast response times.
I don't have verified, up-to-date information about PromptLock.io specifically, so I can't confirm its features, pricing, reliability, or user reputation. I'd recommend researching current reviews, checking the website directly, and looking for independent user feedback before forming an opinion.
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