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Email Send API

Send emails programmatically via Resend. Text and HTML. x402 micropayment.

Open source Repository Open in the app JSON README (API)

About

Send emails programmatically via Resend. Text and HTML. x402 micropayment.

Details

Kind
MCP servers
Topic
Communication
Publisher
br0ski777
Origin
official
Category
ferramentas
Transport
sse
Version
1.1.0
Last push
2026-09-02T19:55:50Z
Repository state
ativo
Language
TypeScript
License
MIT
Added
2026-08-29 03:01:43
Updated
2026-08-29 03:01:43
Origin id
io.github.Br0ski777/email-send

README

# Email Send API

[![MCP Server](https://img.shields.io/badge/MCP-server-blue)](https://email-send.api.klymax402.com/mcp)
[![x402](https://img.shields.io/badge/payments-x402-6E56CF)](https://x402.org)
[![License: MIT](https://img.shields.io/badge/license-MIT-green)](LICENSE)

Send emails programmatically via Resend -- text or HTML body, delivery status, message ID. Transactional email. Pay-per-call via [x402](https://x402.org) (USDC on Base L2) -- no API key, no signup, no rate-limit wall.

Part of the [klymax402](https://klymax402.com) marketplace -- 100 x402 micropayment APIs for AI agents, one wallet, USDC on Base.

## Quickstart -- MCP

Add to your MCP client config (Claude Desktop, Cursor, ElizaOS, etc.):

```json
{
  "mcpServers": {
    "email-send": {
      "url": "https://email-send.api.klymax402.com/mcp"
    }
  }
}
```

## Quickstart -- HTTP (x402)

```bash
curl -X POST "https://email-send.api.klymax402.com/api/send" \
  -H "Content-Type: application/json" \
  -d '{"to":"...","subject":"...","body":"..."}'
# -> 402 Payment Required, with an x402 payment challenge in the response body
```

Any x402-aware client ([`@x402/fetch`](https://www.npmjs.com/package/@x402/fetch), [`x402-agent-tools`](https://www.npmjs.com/package/x402-agent-tools), ATXP) handles the 402 -> sign -> retry cycle automatically.

## Tools

| Tool | Method | Path | Price | Description |
|---|---|---|---|---|
| `email_send_message` | POST | `/api/send` | $0.008 | Send an email message |

### `email_send_message`

Use this when you need to send an email to one or more recipients. Returns delivery confirmation in JSON.

**Parameters**

| Name | Type | Required | Description |
|---|---|---|---|
| `to` | string | yes | Recipient email address |
| `from` | string | no | Sender email address (default: noreply@x402.dev) |
| `subject` | string | yes | Email subject line |
| `body` | string | yes | Email body content (plain text) |
| `html` | string | no | Email body content (HTML, optional — overrides body) |

Example response:

```json
{"messageId":"msg_01abc123","status":"sent","timestamp":"2026-04-13T14:30:00Z","to":"user@example.com","from":"noreply@x402.dev","subject":"Your Report"}
```

**When to use**: sending transactional emails, notifications, alerts, password resets, order confirmations, and automated reports.

**Not for**: email validation (use `email_verify_address`), finding email addresses (use `email_find_by_name`), person data enrichment (use `person_enrich_from_email`).

## Example agent prompts

- "Send an email to one or more recipients"

## Payment

- Protocol: [x402](https://x402.org) -- HTTP-native pay-per-call, no signup, no API key
- Network: Base L2 (`eip155:8453`)
- Asset: USDC
- Facilitator: Coinbase CDP (primary), PayAI (fallback)
- Also reachable via [ATXP](https://atxp.ai) (OAuth-wrapped x402, RFC 9728 protected-resource metadata)

## Part of klymax402

100 x402 micropayment APIs for AI agents -- one wallet, USDC on Base, zero signup.

- Catalog: https://klymax402.com/llms.txt
- Full API reference: https://klymax402.com/llms-full.txt
- Live stats: https://klymax402.com/stats

## License

MIT

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