PromptLock icon
PromptLock icon

PromptLock

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.

PromptLock homepage - API-first security layer for AI applications

Cost / License

  • Subscription
  • Proprietary

Application type

Platforms

  • Online
Live demo showing PII detection and redaction - name, email, phone, SSN automatically replaced with compliance-aware placeholders
Detailed violation breakdown showing detected PII types, confidence scores, and framework-specific compliance analysis
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Analytics dashboard with request trends, risk metrics, and security action tracking
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Features

Properties

  1.  Lightweight
  2.  Privacy focused
  3.  AI-Powered

Features

  1.  Ad-free
  2.  Dark Mode
  3.  PCI Compliant

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PromptLock information

  • Developed by

    US flagTrueNorth Analytics

  • Licensing

    Proprietary and Commercial product.

  • Pricing

    Subscription ranging between $49 and $199 per month.

  • Alternatives

    2 alternatives listed

  • Badge

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  • Supported Languages

    • English

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Security & Privacy, AI Tools & Services

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What is PromptLock?

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:

  • Detects prompt injection attempts (jailbreaks, instruction overrides, role manipulation)
  • Identifies and redacts PII/PHI (names, SSNs, credit cards, medical info)
  • Returns a risk score, action taken, and clean text in a single API call

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:

  • Single REST endpoint: POST /v1/analyze
  • Sub-100ms response time
  • Free tier: 3,000 requests/month
  • No-code integrations: n8n, Flowise, Bubble, Retool

Ideal for:

  • AI apps handling user input
  • Healthcare, fintech, and legal tech products
  • Startups needing compliance without enterprise contracts

Pricing: Free tier available. Paid plans from $49/month.