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QuantaFlow x402 API Gateway – rapid-onecash
x402
QuantaFlow x402 API Gateway – rapid-onecash is a paid API for AI agents from quanta-roan.vercel.app, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-12).
Proxies requests to the rapid-onecash upstream service via the x402 micropayment protocol, charging $0.01 USDC per call.
Price / call$0.01
Success—
StatusUnknown
How this service works
Every request, a quantum of value. x402 protocol-based payment endpoint for web3/DeFi tools.
Output
The raw response body and content type from the rapid-onecash upstream service, passed through transparently after the x402 micropayment of $0.01 USDC is settled. No transformation is applied to the upstream response.
Example use cases
DeFi currency conversion via onecash
“Send a POST to the rapid-onecash '/convert' path with body '{"amount":500,"from":"USD","to":"ETH"}' through QuantaFlow — handle the $0.01 USDC micropayment for me.”
Fetch onecash account balance
“Use QuantaFlow to call rapid-onecash at path '/balance' with query '{"wallet":"0xABC123"}' and give me back whatever the upstream returns — pay the x402 fee automatically.”
Submit onecash transaction via gateway
“Forward a POST request to rapid-onecash at path '/transaction' with body '{"to":"0xDEF456","amount":"10"}' through the QuantaFlow x402 gateway, covering the $0.01 USDC per-call charge.”
Technical details
Endpoint
POSThttps://quanta-roan.vercel.app/api/service/rapid-onecash?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you specifically need to access the rapid-onecash upstream service and want to pay per-call using the x402 USDC micropayment protocol without setting up your own billing or API key arrangement. Prefer this over direct API calls when you want a Coinbase-ecosystem-compatible pay-as-you-go model for DeFi/web3 tooling.
Side effects
- Payment failure: insufficient USDC balance causes x402 payment to fail and request is not forwarded
- Upstream error: rapid-onecash service returns 4xx/5xx which is passed through as-is
- Invalid path: requesting a path not supported by rapid-onecash upstream returns an error
- Malformed body: invalid JSON in body field may cause upstream rejection
- Gateway timeout: rapid-onecash upstream may be slow or unavailable
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| body | string | Optional JSON body forwarded to POST requests. |
| path | string | Path below the selected upstream origin. |
| query | object | |
| method | string |
Output
Schema · Response
{
"description": "The upstream response body and content type are passed through after successful payment."
}Tags
x402
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