Resend Integration for AI Agents

Securely connect your AI agents and chatbots (Claude, ChatGPT, Cursor, etc) with Resend MCP or direct API to send emails, track delivery, automate notifications, and manage email metadata through natural language.
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Supported Tools

Tools
Cancel EmailCancel a scheduled email.
Create AudienceCreate a list of contacts.
Create ContactCreate a contact in resend.
Create DomainCreate a domain through the resend email api.
Delete AudienceRemove an existing audience.
Delete ContactDelete a contact in resend.
Delete DomainDelete a domain through the resend email api.
List AudiencesList all audiences.
List ContactsList contacts in resend.
List DomainsList all domains.
Retrieve AudienceRetrieve a single audience.
Retrieve ContactRetrieve a contact in resend.
Retrieve DomainRetrieve a single domain.
Retrieve EmailRetrieve a single email.
Send EmailSend an email using resend.
Update DomainUpdate an existing domain.
Update EmailUpdate a scheduled email.
Verify DomainVerify a domain through the resend email api.

Connect Resend MCP Tool with your Agent

Python
TypeScript

Install Composio

python
pip install composio claude-agent-sdk
Install the Composio SDK and Claude Agent SDK

Create Tool Router Session

python
from composio import Composio
from claude_agent_sdk import ClaudeSDKClient, ClaudeAgentOptions

composio = Composio(api_key='your-composio-api-key')
session = composio.create(user_id='your-user-id')
url = session.mcp.url
Initialize the Composio client and create a Tool Router session

Connect to AI Agent

python
import asyncio

options = ClaudeAgentOptions(
    permission_mode='bypassPermissions',
    mcp_servers={
        'tool_router': {
            'type': 'http',
            'url': url,
            'headers': {
                'x-api-key': 'your-composio-api-key'
            }
        }
    },
    system_prompt='You are a helpful assistant with access to Resend tools.',
    max_turns=10
)

async def main():
    async with ClaudeSDKClient(options=options) as client:
        await client.query('Send a transactional email to jane@company.com with subject "Welcome"')
        async for message in client.receive_response():
            if hasattr(message, 'content'):
                for block in message.content:
                    if hasattr(block, 'text'):
                        print(block.text)

asyncio.run(main())
Use the MCP server with your AI agent

Connect Resend API Tool with your Agent

Python
TypeScript

Install Composio

python
pip install composio_openai
Install the Composio SDK

Initialize Composio and Create Tool Router Session

python
from openai import OpenAI
from composio import Composio
from composio_openai import OpenAIResponsesProvider

composio = Composio(provider=OpenAIResponsesProvider())
openai = OpenAI()
session = composio.create(user_id='your-user-id')
Import and initialize Composio client, then create a Tool Router session

Execute Resend Tools via Tool Router with Your Agent

python
tools = session.tools
response = openai.responses.create(
  model='gpt-4.1',
  tools=tools,
  input=[{
    'role': 'user',
    'content': 'Send a welcome email to a new contact'
  }]
)
result = composio.provider.handle_tool_calls(
  response=response,
  user_id='your-user-id'
)
print(result)
Get tools from Tool Router session and execute Resend actions with your Agent

Why Use Composio?

AI Native Resend Integration

  • Supports both Resend MCP and direct API based integrations
  • Structured, LLM-friendly schemas for reliable tool execution
  • Rich coverage for sending, tracking, and automating Resend emails

Managed Auth

  • Built-in API key handling and secure storage
  • Central place to manage and revoke Resend credentials
  • Per user and per environment credentials—no more hard-coded keys

Agent Optimized Design

  • Tools tuned for AI reliability and minimal errors
  • Comprehensive logs for every Resend action initiated by your agents

Enterprise Grade Security

  • Granular control over which agents and users can send with Resend
  • Scoped, least-privilege access to Resend resources
  • Full audit trails of agent-driven emails for compliance

Use Resend with any AI Agent Framework

Choose a Framework you want to connect Resend with

Frequently Asked Questions

Do I need my own developer credentials to use Resend with Composio?

Yes, Resend requires you to configure your own API key credentials. Once set up, Composio handles secure credential storage and API request handling for you.

Can I use multiple toolkits together?

Yes! Composio's Tool Router enables agents to use multiple toolkits. Learn more.

Is Composio secure?

Composio is SOC 2 and ISO 27001 compliant with all data encrypted in transit and at rest. Learn more.

What if the API changes?

Composio maintains and updates all toolkit integrations automatically, so your agents always work with the latest API versions.

Used by agents from

Context
ASU
Letta
glean
HubSpot
Agent.ai
Altera
DataStax
Entelligence
Rolai
Context
ASU
Letta
glean
HubSpot
Agent.ai
Altera
DataStax
Entelligence
Rolai
Context
ASU
Letta
glean
HubSpot
Agent.ai
Altera
DataStax
Entelligence
Rolai

Never worry about agent reliability

We handle tool reliability, observability, and security so you never have to second-guess an agent action.

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