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The Vault — x402 Debug & Payment Infrastructure Inspector
x402
The Vault — x402 Debug & Payment Infrastructure Inspector is a paid API for AI agents from 4ohfmz-ip-54-209-17-224.tunnelmole.net, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-14).
Provides a combined x402 payment infrastructure debugger: checks facilitator health, builds payment challenges, verifies receipts, and returns current payment acceptance details for the Vault service.
Price / call$0.01
Success—
StatusUnknown
How this service works
Scarce x402 payment infra: debugger, facilitator health, challenge builder, receipt verifier. Vault money never pays first.
Output
A JSON object confirming the service is operational, including: facilitator health (ok, bazaar flag, latency_ms), full payment_required block listing accepted assets (USDC contract on Base, atomic amount 10000, payTo address, scheme 'exact', network 'eip155:8453'), x402Version, active extensions (bazaar), and a generated_at timestamp.
Example use cases
Diagnosing a failing x402 payment integration
“My app keeps getting payment errors when trying to use The Vault — can you run the x402 debugger on it and tell me if the facilitator is up, what the current payTo address is, and whether the Base network USDC payment setup looks correct?”
Confirming payment details before sending funds
“Before I send a USDC payment to The Vault, can you check the x402 debug endpoint to confirm the exact atomic amount, the payTo wallet address, and the accepted asset contract address on Base mainnet?”
Monitoring facilitator health for an automated workflow
“I need to know if The Vault's x402 facilitator is currently healthy and what its response latency is — can you pull the debug status and let me know if bazaar is active and everything looks good?”
Technical details
Endpoint
GEThttps://4ohfmz-ip-54-209-17-224.tunnelmole.net/v1/x402-debugWhen to prefer
Use this endpoint when you need to introspect, debug, or validate The Vault's x402 payment infrastructure — specifically to check facilitator health, confirm accepted payment assets and addresses on Coinbase Base, verify x402 challenge/receipt correctness, or troubleshoot payment flow issues before or after a transaction. Prefer this over generic x402 tools when dealing specifically with The Vault / Scarce service and needing combined debugger + facilitator health + payment challenge info in a single call.
Side effects
- Facilitator offline or unreachable — facilitator.ok returns false with elevated latency
- Tunnelmole tunnel expired or host unreachable — connection timeout or 502/503 error
- Payment challenge generation fails — payment_required.ok returns false
- Invalid or malformed query parameters — may return 400 with error details
- Bazaar extension not recognized — missing 'bazaar' in extensions array
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| queryParams | string |
Output
Schema · Response
{
"type": "json",
"example": {
"ok": true,
"service": "the-vault-x402-debug",
"price_usdc": 0.01,
"facilitator": {
"ok": true,
"bazaar": true,
"latency_ms": 120,
"has_base_exact": true
},
"generated_at": "2026-08-23T17:00:00.000Z",
"payment_required": {
"ok": true,
"accepts": [
{
"ok": true,
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"index": 0,
"payTo": "0x6e19C5A629cc9E0e31Bb22f2024Ba481688729c0",
"issues": [],
"scheme": "exact",
"network": "eip155:8453",
"warnings": [],
"amount_usdc": 0.01,
"amount_atomic": "10000"
}
],
"extensions": [
"bazaar"
],
"x402Version": 2,
"accepts_count": 1
}
}
}Tags
x402
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