# Sovereign X402 Email Send (Resend)

> Sovereign X402 Email Send (Resend) is a paid API for AI agents from sovereign-x402-zeta.vercel.app, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-15).

Sends a plain-text or HTML email via the Resend email delivery service.

## Facts

- Endpoint: POST https://sovereign-x402-zeta.vercel.app/api/v1/email/send
- Price: $0.005/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/sovereign-x402-email-send-resend-e91ebafd
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_U5Zmz2TwejTQkjCes3Zio

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 sovereign-x402-email-send-resend-e91ebafd -d '<json body>'
```

Example prompt: Send an HTML email to jane.doe@example.com with the subject 'Your order has shipped' and a body that says '<p>Hi Jane, your order #12345 is on its way!</p>'.

## When to prefer this

Choose this endpoint when you need a simple, pay-per-use email send capability within an x402-compatible agent workflow, especially if you want to avoid managing your own Resend API keys or email infrastructure. It is ideal for low-volume transactional or notification emails triggered by AI agents.

## Known failure modes

- Invalid recipient email address — Resend rejects malformed addresses
- Missing required fields (body, method, bodyType) — returns a validation error
- Resend API key misconfigured on the server side — returns a 500 or authentication error
- Rate limit exceeded — too many emails sent in a short window
- Payment failure via x402 — call rejected before reaching Resend if USDC payment not settled

## How this service works

Send a plain-text or HTML email via Resend.

## Output

Returns a delivery confirmation from Resend, including a message ID indicating the email was accepted for delivery, or an error response if the send failed.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method",
    "bodyType",
    "body"
   ],
   "properties": {
    "body": {
     "type": "object",
     "properties": {},
     "additionalProperties": true
    },
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "POST",
      "PUT",
      "PATCH"
     ],
     "type": "string"
    },
    "bodyType": {
     "enum": [
      "json",
      "form-data",
      "text"
     ],
     "type": "string"
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/sovereign-x402-email-send-resend-e91ebafd/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from sovereign-x402-zeta.vercel.app](https://www.zero.xyz/host/sovereign-x402-zeta.vercel.app/llms.txt)