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QuantaFlow x402 API Gateway – Resend Proxy
x402
QuantaFlow x402 API Gateway – Resend Proxy is a paid API for AI agents from quanta-roan.vercel.app, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-13).
Forwards HTTP requests to the Resend email API via an x402 micropayment-gated proxy, 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
Returns the upstream Resend API response body (e.g. message ID, delivery status) and content type, passed through transparently after the x402 micropayment is validated.
Example use cases
Transactional email for crypto app
“My DeFi app needs to send a confirmation email to alice@example.com with subject 'Deposit received' and body 'Your 1 ETH deposit has been confirmed.' — use the QuantaFlow x402 Resend gateway and charge $0.01 USDC per send.”
Password reset via web3-native gateway
“Send a password reset email to bob@example.com with subject 'Reset your password' and the reset link in the body, forwarding it through the QuantaFlow x402 Resend proxy.”
Notification dispatch without subscription
“I want to fire off a one-time notification email to the team at team@myproject.io with subject 'Deploy succeeded' without signing up for a monthly email plan — just use the QuantaFlow x402 gateway to POST to Resend and pay per call.”
Technical details
Endpoint
POSThttps://quanta-roan.vercel.app/api/service/resend?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need to send transactional email via Resend but want pay-per-use micropayment billing in USDC rather than a traditional monthly subscription, or when operating in a web3/DeFi context where x402 protocol payments are already part of your agent's payment stack.
Side effects
- Insufficient USDC balance causes x402 payment failure and request is rejected before forwarding
- Invalid or malformed JSON body results in upstream Resend API error passed through
- Incorrect path causes 404 or routing error from Resend
- Missing required Resend fields (e.g. to/from/subject) result in 4xx from upstream
- Network or upstream Resend outage returns 502/503 passthrough error
- Malformed query object causes request construction failure
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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