OpenAI builds and deploys advanced AI models like GPT-4o for autonomous agents and workflows.
usezn
$19/moStarting price
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About usezn
usezn is an AI security gateway designed to protect AI agents from prompt injection and other attacks by intercepting every tool call before it reaches the target system. It operates as a sacrificial layer, absorbing attacks while allowing legitimate requests to pass through. The gateway uses deterministic rules and SHA-256 evidence hashing to provide verifiable security without relying on models in the hot path. It supports both MCP and A2A protocols and can be deployed as a self-hosted binary or via a managed cloud service. The system is built for real-time prompt analysis with sub-2ms latency and maintains a low false positive rate of 1.27%. Evidence is stored locally with 90-day retention and never includes raw prompts. The open-core model allows users to audit the detection engine while the cloud service adds convenience without lock-in.
Key features
- Sacrificial protection layer for agent tool calls
- WASM policy engine with hot-reload capability
- SQL/Prompt/LFI guard with managed rulesets
- Agent reputation scoring (Trusted/Neutral/Suspicious/Banned)
- A2A firewall with context-aware policies
- Neural detection with Candle/ONNX backend
- M-of-N consensus for critical operations
- Loop breaker to prevent repeated malicious inputs
Use cases
- Protecting AI agents from prompt injection attacks
- Securing tool calls in agentic workflows
- Compliance and audit trails for agent interactions
Pros
- Deterministic rules with SHA-256 evidence for verifiable security
- Supports MCP and A2A protocols for agent communication
- Sub-2ms latency with low false positive rate (1.27%)
- Open-core model allows self-hosting and code auditing
- No storage of raw prompts; evidence is hashed metadata only
Cons
- No free tier beyond 48-hour trial
- Requires integration via API or CLI build
- Managed service pricing starts at $19/month
- Evidence retention limited to 90 days
Frequently asked questions about usezn
What does usezn do?
usezn is an AI security gateway that protects AI agents from prompt injection and other attacks by intercepting every tool call before it reaches the target system. It operates as a sacrificial layer, absorbing attacks while allowing legitimate requests to pass through.
Who should use usezn?
usezn is designed for developers and organizations deploying AI agents that interact with external tools or systems, particularly those concerned with security risks like prompt injection.
How does usezn integrate with existing systems?
usezn supports MCP and A2A protocols, allowing it to integrate with AI agents via a simple API call. It can be deployed as a self-hosted binary or via a managed cloud service.
Does usezn store raw prompts?
No, usezn does not store raw prompts. It uses SHA-256 evidence hashing with 90-day retention for metadata only.
What is the pricing model for usezn?
usezn offers a free 48-hour proof run, followed by tiered pricing plans starting at $19/month for 10,000 calls, with overage packs available for additional usage.
Can I cancel my usezn subscription anytime?
Yes, usezn allows cancellation anytime through self-service, with no long-term commitments required.
