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Agent Security Gateway – Payment Metadata Sanitizer
x402
Agent Security Gateway – Payment Metadata Sanitizer is a paid API for AI agents from agent-security-gateway.onrender.com, paid per call via x402, $0.05/call, status unknown (last checked 2026-09-13).
Scans payment metadata payloads for PII, credentials, and suspicious or injected instructions before an AI agent executes an x402 payment or external API call
Price / call$0.05
Success—
StatusUnknown
How this service works
Scan payment metadata for PII, credentials, and suspicious instructions
Output
Returns a structured report indicating whether the payload is safe or flagged, with specific findings for PII occurrences, exposed credentials, and suspicious/injected instructions detected in the payment metadata.
Example use cases
Example prompt
“Before I submit this x402 payment, scan the metadata payload for any PII, leaked credentials, or suspicious injected instructions: {paste metadata here}.”
Technical details
Endpoint
POSThttps://agent-security-gateway.onrender.com/api/security/metadata-sanitizeWhen to prefer
Use this endpoint when an AI agent is about to execute an x402 payment or external API call and needs a pre-flight security check to ensure the metadata doesn't contain accidentally included PII, leaked API keys/credentials, or adversarially injected instructions that could compromise the transaction or downstream systems.
Side effects
- Malformed payload returns 400 with validation error
- Oversized metadata payload may be rejected or truncated
- False positives may flag benign structured data as suspicious
- Service unavailable on cold start (Render free tier spin-up delay)
- Payment not received results in 402 before scan is performed
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| sanitization_status | string | |
| recommended_next_step | string | |
| detected_sensitive_fields | array | |
| safe_to_send_to_payment_metadata | boolean |
Tags
x402
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