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StealthGuard x402 Endpoint Verifier
x402
StealthGuard x402 Endpoint Verifier is a paid API for AI agents from stealthguard-402.onrender.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-19).
Audits x402 payment endpoints for wallet authenticity, pricing integrity, challenge header validity, and schema hijack risks
Price / call$0.01
Success—
StatusUnknown
How this service works
Audits target x402 endpoints for authentic payTo wallet, pricing, challenge headers, and schema hijack risks.
Output
Returns an audit report covering: authenticity of the payTo wallet address, correctness and consistency of pricing headers, validity of x402 challenge headers, and any detected schema hijack or manipulation risks — structured as a security verdict that an agent can act on before initiating payment.
Example use cases
Pre-payment wallet authenticity check
“I'm about to have my agent pay an x402 endpoint at https://dataservice.example.com/v1/feed — can you verify the payTo wallet address is real and not a drainer before any USDC leaves my wallet?”
Schema hijack risk scan before agent loop
“My autonomous agent is about to start calling https://agentapi.example.com/infer in a loop using x402 payments — scan it first for schema hijacking or pricing manipulation risks so I know it's safe to automate.”
Challenge header validation for x402 integration
“I'm integrating a third-party x402 API at https://partnerservice.io/api/process into my workflow — audit its challenge headers and pricing claims to make sure everything checks out before I wire it into my agent pipeline.”
Technical details
Endpoint
POSThttps://stealthguard-402.onrender.com/v1/security/x402-endpoint-verifier?utm_source=zero.xyzWhen to prefer
Use this endpoint when an AI agent is about to pay an x402 endpoint and needs a security gate to verify the payment target is legitimate. Prefer this over manual inspection when automating x402 payment flows, integrating unknown third-party x402 APIs, or running agent pipelines where wallet drainer or schema hijack attacks are a concern. Especially valuable before looping payments or high-frequency autonomous agent calls.
Side effects
- Target endpoint is unreachable or returns non-x402 response
- Malformed input body or missing required fields causes 400 error
- Target endpoint uses non-standard x402 schema that cannot be parsed
- Inconclusive wallet verification if on-chain data is unavailable
- Timeout if the target endpoint is slow to respond to challenge probes
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| endpoint_url | string | Target x402 endpoint URL to audit |
Tags
x402
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