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Documentation Index

Fetch the complete documentation index at: https://resend.com/docs/llms.txt

Use this file to discover all available pages before exploring further.

If you’re developing with AI, Resend offers several resources to improve your experience.

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Prerequisite: Create an API Key

Currently, we require a human to create a Resend account. Once you have an account, you’ll need to create an API key. With an API key, your agent can perform many other tasks.
To send or receive with Resend, you’ll need to verify a domain. While an agent can create a domain, the API returns DNS records you will need to add in your DNS provider before verifying your DNS records. You may find it easier to verify your domain in the dashboard.

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Resend MCP Server

MCP is an open protocol that standardizes how applications provide context to LLMs. Among other benefits, it provides LLMs tools to act on your behalf. Our MCP server is open-source and covers our full API surface area. The Resend MCP server is available on NPM and can be added to any supported MCP client. For example: 
{
  "mcpServers": {
    "resend": {
      "command": "npx",
      "args": ["-y", "resend-mcp"],
      "env": {
        "RESEND_API_KEY": "re_xxxxxxxxx"
      }
    }
  }
}

MCP Server

View installation instructions for Cursor, Codex, Claude Desktop, Windsurf, and more.

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Resend CLI

The Resend CLI lets you send emails, manage your account, and develop locally, all from the terminal. It’s built for humans, AI agents, and CI/CD pipelines. 
# Authenticate
resend login

# Send an email
resend emails send \
  --from "you@example.com" \
  --to hello@example.com \
  --subject "Hello" \
  --text "Sent from my terminal."
The CLI also includes a full local webhook setup for developing with inbound email events without deploying anything.

Resend CLI

Install the CLI and set up a local webhook development environment.

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Resend Docs for Agents

You can give your agent current docs in a context-aware way in three ways:
  1. Markdown docs Every doc includes a markdown version (append md to any page) 
    Docs for this page: https://resend.com/docs/ai-onboarding.md
  2. Full llms.txt Give your agent all our docs in a single file. 
    Here are the Resend docs: https://resend.com/docs/llms-full.txt
  3. MCP Docs server For a more structured approach using MCP tools, you can install our MCP docs server in any MCP client, like Cursor, Codex, or Claude Code. 
    npx add-mcp https://resend.com/docs/mcp

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Email Skills for Agents

Skills give AI agents specialized knowledge for specific tasks. Install skills with a single command: 
npx skills add resend/resend-skills
Or install individually:
SkillInstallWhat it does
Resendnpx skills add resend/resend-skillsSend and receive emails, handle errors, prevent duplicate sends, get code examples from various SDKs
React Emailnpx skills add resend/react-emailBuild emails in React, Tailwind, and TypeScript. Audit existing React emails for style and cross-client rendering.
Email Best Practicesnpx skills add resend/email-best-practicesAudit SPF/DKIM/DMARC setup, compliance (CAN-SPAM, GDPR), webhook handling

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Quick Start Guides

Throughout our documentation, we provide quick start guides for common tasks with Resend. They contain step-by-step instructions for sending emails, creating templates, and more. Copy the prompt for your agent or click to open in Cursor.

Example agent quick start guide for sending emails.

Open in Cursor

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OpenClaw Guide

Equipping your agent with its own email inbox can be a powerful tool to unlock new workflows. Alternatively, give it access to your Resend account to support agentic flows for sending and receiving emails.

Email Automation for OpenClaw using Resend

View the OpenClaw guide.

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Chat SDK

The @resend/chat-sdk-adapter package is a Vercel Chat SDK adapter that turns email into a two-way communication channel. Receive inbound emails through webhooks, reply through the Resend API, and let the adapter handle threading automatically. It also supports card emails, attachments, and proactive outreach.

Chat SDK

Build conversational email experiences with the Chat SDK adapter.

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AI Builder Guides

We offer guides to using Resend with popular AI builders to help you get started with AI agents.

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AI Integrations

Several AI tools have created integrations for working with Resend. Visit their documentation for information on integrating Resend with their tools.

Lovable

Tell the Lovable AI to send emails

Anything

Add email to your Anything projects

Wildcard

Send natural language emails using Wildcard

mcp.run

Build email AI agents using mcp.run

Rocket

Send emails from apps built with Rocket

Base44

Add email to your Base44 apps

Leap.new

Add email to your Leap apps

Parsley

Send alerts and follow-ups with Parsley

Pica

Integrate Pica with Resend