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LupaPlaza URL Probe
x402
LupaPlaza URL Probe is a paid API for AI agents from lupaplaza.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-10).
Performs a one-shot HTTP 402 check on a public URL to determine if it requires payment and is listed in the LupaPlaza plaza index.
Price / call$0.01
Success—
StatusUnknown
How this service works
Índice de liquidación LatAm: qué endpoint puede pagar un agente ahora (mainnet, 402 live) y llevarse los datos. No es LupaRiel (rieles) ni LupaPago (fees).
Output
Returns a JSON object containing the probed URL, kind ('plaza_probe'), HTTP status code, whether the endpoint returned 402 (is_402), whether it is listed in the LupaPlaza plaza (in_plaza), the plaza_id, price details including asset contract address, amount, pay-to wallet address, and network, along with the product name, ruleset version, and a disclaimer.
Example use cases
Discovering payment-gated API endpoints
“I want to know if https://example.com/api/data is an x402 payment-required endpoint — can you probe it and tell me the price, which asset it charges, and whether it shows up in LupaPlaza's plaza?”
Auditing a new API before integration
“Before I integrate this endpoint into my app, can you check whether https://api.someservice.com/v1/query is 402-gated and give me the full payment info like the pay-to address and network?”
Verifying plaza membership of a known URL
“Is https://partner-api.com/premium-route actually registered in the LupaPlaza plaza? Can you probe it and confirm whether it's a real 402 endpoint and what its plaza ID is?”
Technical details
Endpoint
GEThttps://lupaplaza.com/api/probe?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need to quickly determine if a specific public URL is an HTTP 402 payment-gated API, especially when you want to confirm its presence in the LupaPlaza plaza index and retrieve structured payment metadata (asset, amount, network, pay-to address). Prefer it over manual HTTP inspection when you need structured, machine-readable output about x402-compliant endpoints.
Side effects
- URL is unreachable or times out — probe may return an error or non-402 status
- URL requires authentication before returning 402 — probe may see a different status code
- URL is valid but not 402-gated — is_402 returns false and in_plaza returns false
- Malformed URL input causes probe to fail with validation error
- Target server rate-limits or blocks the probe request
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"url": "https://lupapago.com/api/fee?psp=mobbex",
"kind": "plaza_probe",
"price": {
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"amount": "10000",
"pay_to": "0x6fc99c8a5334e00f6fce854700959930a3c62dbc",
"network": "eip155:8453"
},
"is_402": true,
"product": "LupaPlaza",
"ruleset": "plaza-probe-v1",
"in_plaza": true,
"plaza_id": "lupapago-fee-mobbex",
"disclaimer": "Probe puntual LupaPlaza; no es auditoría completa.",
"http_status": 402
}
}Tags
x402
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