# Services from agent-security-gateway.onrender.com on Zero

> agent-security-gateway.onrender.com serves 13 paid API services for AI agents, indexed by Zero. Each is callable per call with payment handled by Zero.

Canonical page: https://www.zero.xyz/host/agent-security-gateway.onrender.com
Live health (JSON, refreshed every minute): https://www.zero.xyz/host/agent-security-gateway.onrender.com/health.json

## Services

- [Agent Security Gateway – Dry Run Validate](https://www.zero.xyz/c/agent-security-gateway-dry-run-validate-08b6b569/llms.txt): $0.01/call via x402. Validates and sanitizes AI agent tool-call responses to detect threats, dangerous actions, and policy violations before they are executed
- [Agent Security Gateway – Schema Drift Check](https://www.zero.xyz/c/agent-security-gateway-schema-drift-check-3b7514ce/llms.txt): $0.01/call via x402. Detects dangerous or unexpected field additions in API response content to prevent schema drift attacks against AI agents
- [Agent Security Gateway – Identity Scope Check](https://www.zero.xyz/c/agent-security-gateway-identity-scope-check-2e4a6a85/llms.txt): $0.01/call via x402. Validates whether an AI agent's requested action falls within its permitted identity scopes, blocking privileged or out-of-scope operations
- [Agent Security Gateway – Deterministic Content Validation](https://www.zero.xyz/c/agent-security-gateway-deterministic-content-validation-59ec01ba/llms.txt): $0.03/call via x402. Runs deterministic (rule-based, no AI) security validation on text content, checking for violations, threats, and format compliance, then returns a pass/fail result with violation details.
- [Agent Security Gateway – Response Sanitize](https://www.zero.xyz/c/agent-security-gateway-response-sanitize-49087df3/llms.txt): $0.01/call via x402. Scans and sanitizes AI agent tool responses to detect prompt injection, threats, and malicious content before the agent processes them.
- [Agent Security Gateway – Quota Check](https://www.zero.xyz/c/agent-security-gateway-quota-check-081da375/llms.txt): $0.01/call via x402. Checks whether an AI agent has exceeded its tool call quota and returns a block/allow decision with risk level and recommended action.
- [Agent Security Gateway - Batch Security Scan](https://www.zero.xyz/c/agent-security-gateway-batch-security-scan-b9d29408/llms.txt): $0.1/call via x402. Batch-scans multiple content items for security threats including prompt injection, validates content safety, and returns risk scores with sanitized output for AI agents.
- [Agent Security Gateway – Completeness Validator](https://www.zero.xyz/c/agent-security-gateway-completeness-validator-12102885/llms.txt): $0.03/call via x402. Validates whether actual output items fully cover expected items for a given task, checking completeness of agent-generated results
- [Agent Security Gateway - Pre-Payment Security Check](https://www.zero.xyz/c/agent-security-gateway-pre-payment-security-check-9ad9ef07/llms.txt): $0.03/call via x402. Performs a pre-payment security validation of an API endpoint and agent transaction before a USDC micropayment is executed, checking for threats and injection risks.
- [Agent Security Gateway - Trust Check](https://www.zero.xyz/c/agent-security-gateway-trust-check-b40f8985/llms.txt): $0.05/call via x402. Performs a pre-payment security trust check on an API URL to validate safety before an AI agent calls it
- [Agent Security Gateway – List Count Validation Check](https://www.zero.xyz/c/agent-security-gateway-list-count-validation-check-738d27ec/llms.txt): $0.01/call via x402. Validates that an actual list item count matches an expected count, returning a pass/fail security check result for AI agent workflows.
- [Agent Security Gateway – Payment Metadata Sanitizer](https://www.zero.xyz/c/agent-security-gateway-onrender-com-9906d78d/llms.txt): $0.05/call via x402. Scans payment metadata payloads for PII, credentials, and suspicious or injected instructions before an AI agent executes an x402 payment or external API call
- [Agent Security Gateway - Request Security Scanner](https://www.zero.xyz/c/agent-security-gateway-onrender-com-a2325541/llms.txt): $0.05/call via x402. Scans AI agent requests for security threats before external API calls or x402 payment execution

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

- [Zero catalog index](https://www.zero.xyz/llms.txt)