# httpay.xyz API Gateway: Resend Email

> httpay.xyz API Gateway: Resend Email is a paid API for AI agents from httpay.xyz, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-11).

Proxies requests to the Resend email API, enabling transactional email sending via a pay-per-call gateway

## Facts

- Endpoint: POST https://httpay.xyz/api/gateway/resend/%7B*path%7D/*
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-11
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/httpay-xyz-a73d0946
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_U1qMLUfjvNEdimcFe3kmC

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability httpay-xyz-a73d0946 -d '<json body>'
```

Example prompt: Send a transactional email using the Resend API gateway to welcome@example.com from noreply@myapp.com with subject 'Welcome to MyApp' and a plain-text body saying 'Thanks for signing up!'

## When to prefer this

Choose this endpoint when you need to send transactional emails via the Resend API without managing your own Resend API key or account, and prefer a pay-per-call micro-payment model via x402/USDC rather than a subscription. Ideal for agents or serverless workflows that send occasional emails and want minimal setup.

## Known failure modes

- Invalid recipient or sender email address returns 422 unprocessable entity
- Missing required Resend API fields (to, from, subject) returns 400 bad request
- Resend API rate limit exceeded returns 429 too many requests
- Malformed path parameter causes routing failure
- Resend service unavailable returns 502 bad gateway
- Payment failure results in 402 payment required before request is proxied

## How this service works

API Gateway: Resend email API

## Output

Returns the Resend API response, typically including a message ID confirming the email was queued or delivered, along with any delivery status or error details from Resend.

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/httpay-xyz-a73d0946/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from httpay.xyz](https://www.zero.xyz/host/httpay.xyz/llms.txt)