Prompt Security
Runtime security platform for LLM applications. Detects prompt injections, data exfiltration attempts, and compliance violations with real-time monitoring and response capabilities.
Overview
Prompt Security is a developer-first platform focused on securing LLM-powered applications. It provides runtime protection against prompt injection, sensitive data leaks, and unauthorized content generation. The platform acts as a security layer over existing prompt infrastructure without requiring code rewrites, supporting OpenAI, Claude, Azure AI, and other LLM providers via API integration. Prompt Security also offers "Prompt Fuzzer," an open-source GenAI vulnerability assessment tool, and features a transparent risk scoring system with parameter breakdowns for evaluating AI tools and MCP servers.
The Verdict
Who Should Use Prompt Security?
Best For
- Enterprises deploying production LLM applications
- Teams needing runtime threat monitoring
- Organizations with compliance requirements
- Multi-provider LLM environments (OpenAI, Claude, Azure)
- Security teams evaluating AI tool risks
Not Ideal For
- Individual developers (enterprise-focused)
- Teams wanting self-hosted open-source (see LLM Guard)
- Budget-constrained startups
- Simple single-model applications
What's Great
- No code rewrites needed—drops into existing infrastructure
- Real-time threat detection and response
- Supports multiple LLM providers (OpenAI, Claude, Azure)
- Transparent risk scoring system for AI tools
- Open-source Prompt Fuzzer for vulnerability testing
- MCP server security assessment capabilities
- Recognized among leading AI security platforms
Watch Out For
- Enterprise pricing (contact sales required)
- No self-serve signup or public pricing
- Newer platform compared to established vendors
- May be overkill for simple use cases
Pricing
View all features & details
Threat Detection
- Prompt injection attacks
- Jailbreak attempts
- Data exfiltration prevention
- Unauthorized content generation
- PII/sensitive data leaks
- Compliance violations
Risk Assessment
- AI tool risk scoring
- MCP server evaluation
- Parameter breakdowns
- Certification checks
- Vulnerability assessment
- Prompt Fuzzer (OSS)
LLM Providers
- OpenAI GPT models
- Anthropic Claude
- Azure OpenAI
- Google Vertex AI
- Custom/local models
- Multi-provider support
Platform Features
- Real-time monitoring
- API integration
- No code changes required
- Audit logging
- Policy enforcement
- Compliance reporting
How It Compares
| Feature | Prompt Security | Lakera Guard | LLM Guard | Protect AI |
|---|---|---|---|---|
| Type | Cloud Platform | Cloud API | Open Source | Enterprise |
| Runtime Protection | Yes | Yes | Self-hosted | Yes |
| Risk Scoring | Yes | No | No | No |
| Open Source Tool | Prompt Fuzzer | No | Full OSS | LLM Guard |
| MCP Assessment | Yes | No | No | No |
| Self-Serve Pricing | No | Yes | Free | No |
| Best For | Enterprise runtime | API protection | Self-hosted | MLSecOps |