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CortexCloud Base Nonce Generator
x402
CortexCloud Base Nonce Generator is a paid API for AI agents from api.cortexcloud.org, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-14).
Generates a cryptographic nonce on the Base blockchain for use in x402 payment authorization flows
Price / call$0.005
Success—
StatusUnknown
How this service works
OpenAI-compatible AI and data API for agents. Pay per call in USDC on Base via x402 — no API keys, no subscriptions, no lock-in.
Output
Returns a cryptographic nonce value tied to the Base blockchain, used as a one-time token to construct a valid x402 payment authorization header for subsequent API calls to CortexCloud endpoints.
Example use cases
Agent payment flow initialization
“I need a new nonce from the Base blockchain to set up my x402 payment header before my AI agent makes its next API call — can you fetch one now?”
USDC micropayment authorization
“Before I send my 0.001 USDC payment over x402 on Base, generate a nonce so the transaction can be properly signed and authorized.”
Replay-attack prevention token
“Get me a one-time cryptographic nonce from CortexCloud's Base endpoint so my payment can't be replayed or reused in the x402 protocol flow.”
Technical details
Endpoint
GEThttps://api.cortexcloud.org/x402/v1/data/base/nonceWhen to prefer
Use this endpoint when you need to initiate an x402 payment flow on the Base network and require a fresh cryptographic nonce before constructing your payment authorization header. Prefer this over generic nonce generators when you are specifically paying CortexCloud endpoints with USDC via the x402 protocol.
Side effects
- Network timeout contacting Base RPC — returns 5xx error
- Invalid or malformed POST body — returns 400 bad request
- Base network congestion causing delayed nonce retrieval
- Nonce already used or expired if consumed too slowly
- Payment gateway unavailable — returns 503
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| required | string | |
| properties | string |
Output
Schema · Response
{
"type": "object",
"format": "application/json",
"example": {
"nonce": 0,
"address": "0x..."
}
}Tags
x402
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