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Horizon Pulse x402 Deep Check
x402
Horizon Pulse x402 Deep Check is a paid API for AI agents from horizonpulse.dev, paid per call via x402, $0.03/call, status unknown (last checked 2026-10-30).
Performs a comprehensive security and compliance audit of an x402 payment endpoint, including TLS, security headers, CORS, payTo address verification, lookalike detection, and discovery drift analysis — without paying or signing.
Price / call$0.03
Success—
StatusUnknown
How this service works
x402 endpoint deep check, never pays or signs: the full /api/x402-check report plus live checks. GET url (optional method, body). Adds TLS, security headers, CORS, payTo vs the payee's own published addresses (/.well-known/x402, openapi.json, llms.txt), lookalike payTo detection, and drift between the live 402 and well-known, openapi and CDP Bazaar listings. Any HTTP answer from the target is billed; bad input, blocked hosts and timeouts are not.
Output
A detailed deep-check report covering: TLS certificate validity and configuration, HTTP security headers presence/quality, CORS policy analysis, the decoded x402 payment terms (payTo address, price, accepted tokens), comparison of payTo against addresses published in /.well-known/x402, openapi.json, and llms.txt, lookalike/typosquatting detection on the payTo address, and drift analysis between the live 402 response and the endpoint's well-known, OpenAPI, and CDP Bazaar listings.
Example use cases
Pre-integration fraud check for x402 API
“I found an x402 API at https://payments.someservice.io/api/summarize and want to use it in my agent — can you do a deep check to make sure the payTo address is legit and matches what they've published in their well-known and OpenAPI docs, and flag any lookalike wallet addresses?”
Security audit before agent deployment
“Before I deploy my agent to use https://data.cryptoapi.xyz/api/prices, run a full deep security audit — I need to know if TLS is solid, security headers are set correctly, CORS is configured safely, and whether the 402 payment terms match their CDP Bazaar listing.”
Discovery drift investigation for known x402 endpoint
“Something feels off about https://api.aitools.dev/v1/chat — can you check if the live 402 response has drifted from what's listed in their well-known file and OpenAPI spec, and tell me if the payTo address looks like a lookalike or has changed?”
Technical details
Endpoint
GEThttps://horizonpulse.dev/api/x402-check/deep?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a comprehensive, one-call security and authenticity audit of an x402 endpoint before paying it — especially when you want to verify payTo addresses against multiple published sources, detect potential fraud or drift, and assess TLS/CORS/header security. Prefer this over the basic x402-check endpoint when fraud risk, address verification, and discovery drift are important, or when integrating a new x402 API into an automated agent workflow where payment mistakes are costly.
Side effects
- Bad input URL (private/localhost/blocked host) — not billed, returns error immediately
- Target URL timeout — not billed
- Target returns non-HTTP error (DNS failure, connection refused) — not billed
- Any HTTP response from target (including 4xx/5xx) — billed at $0.03
- Well-known or OpenAPI docs unreachable — partial report with missing comparison fields
- CDP Bazaar listing not found — drift check skipped for that source
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
Reviews
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