3,400+ MCP servers ready to use
Vinkius
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Bring Transactional Email
to OpenAI Agents SDK

Learn how to connect Resend to OpenAI Agents SDK and start using 11 AI agent tools in minutes. Fully managed, enterprise secure, and ready to use without writing a single line of code.

Add Contact To AudienceCreate AudienceGet Domain DetailsGet Email DetailsList Api KeysList AudiencesList ContactsList DomainsList Sent EmailsSend EmailVerify Domain
Use with Your AI Agent
Ask AI about this MCP Server
ChatGPT Claude Perplexity

What is the Resend MCP Server?

Connect your Resend account to any AI agent and take full control of your transactional email orchestration through natural conversation. Resend provides a world-class email infrastructure for developers, and this integration allows you to send emails, monitor domain verification, and manage contact audiences directly from your chat interface.

What you can do

  • Email Orchestration — Send high-fidelity emails using custom HTML or text programmatically, with support for batch sending and history retrieval.
  • Domain Lifecycle Management — List all managed domains and trigger verification processes directly from the AI interface to ensure deliverability.
  • Audience & CRM Control — Create and manage contact audiences and individual subscribers via natural language to maintain your marketing lists.
  • API & Security Oversight — Access and monitor your API keys to ensure your integration remains secure and synchronized.
  • Operational Monitoring — Track system responses and manage email delivery logs using simple AI commands.

How it works

1. Subscribe to this server
2. Enter your Resend API Key (re_xxxxxxxxx) from your settings
3. Start managing your email infrastructure from Claude, Cursor, or any MCP-compatible client

No more manual dashboard navigation for checking logs or verifying domains. Your AI acts as a dedicated email operations manager or delivery coordinator.

Who is this for?

  • Developers & DevOps — quickly send test emails and verify domain DNS records without switching tools.
  • Marketing Operations — automate the management of contact audiences and monitor engagement via natural conversation.
  • Startup Founders — streamline the retrieval of transactional email history directly within the chat.

Built-in capabilities (11)

add_contact_to_audience

Requires email. Add a contact to an audience

create_audience

Create a new audience

get_domain_details

Get details for a specific domain

get_email_details

Get details for a specific email

list_api_keys

List all API keys

list_audiences

List contact audiences

list_contacts

List contacts in an audience

list_domains

List registered domains

list_sent_emails

List sent emails

send_email

Requires from, to, and subject. Send a single email

verify_domain

Verify a domain

Why OpenAI Agents SDK?

The OpenAI Agents SDK auto-discovers all 11 tools from Resend through native MCP integration. Build agents with built-in guardrails, tracing, and handoff patterns. chain multiple agents where one queries Resend, another analyzes results, and a third generates reports, all orchestrated through Vinkius.

  • —

    Native MCP integration via MCPServerSse, pass the URL and the SDK auto-discovers all tools with full type safety

  • —

    Built-in guardrails, tracing, and handoff patterns let you build production-grade agents without reinventing safety infrastructure

  • —

    Lightweight and composable: chain multiple agents and MCP servers in a single pipeline with minimal boilerplate

  • —

    First-party OpenAI support ensures optimal compatibility with GPT models for tool calling and structured output

O
See it in action

Resend in OpenAI Agents SDK

AI Agent→Vinkius
High Security·Kill Switch·Plug and Play
Why Vinkius

Resend and 3,400+ other MCP servers. One platform. One governance layer.

Teams that connect Resend to OpenAI Agents SDK through Vinkius don't need to source, host, or maintain individual MCP servers. Every tool call runs inside a hardened runtime with credential isolation, DLP, and a signed audit chain.

3,400+MCP Servers ready
<40msCold start
60%Token savings
Raw MCP
Vinkius
Server catalogFind and host yourself3,400+ managed
InfrastructureSelf-hostedSandboxed V8 isolates
Credential handlingPlaintext in configVault + runtime injection
Data loss preventionNoneConfigurable DLP policies
Kill switchNoneGlobal instant shutdown
Financial circuit breakersNonePer-server limits + alerts
Audit trailNoneEd25519 signed logs
SIEM log streamingNoneSplunk, Datadog, Webhook
HoneytokensNoneCanary alerts on leak
Custom domainsNot applicableDNS challenge verified
GDPR complianceManual effortAutomated purge + export
Use with Your AI Agent View step-by-step setup guide for OpenAI Agents SDK →
Enterprise Security

Why teams choose Vinkius for Resend in OpenAI Agents SDK

The Resend MCP Server runs on Vinkius-managed infrastructure inside AWS — a purpose-built runtime with per-request V8 isolates, Ed25519 signed audit chains, and sub-40ms cold starts. All 11 tools execute in hardened sandboxes optimized for native MCP execution.

Your AI agents in OpenAI Agents SDK only access the data you authorize, with DLP that blocks sensitive information from ever reaching the model, kill switch for instant shutdown, and up to 60% token savings. Enterprise-grade infrastructure, zero maintenance.

Use with Your AI Agent View full Resend details →
Resend
Fully ManagedVinkius Servers
60%Token savings
High SecurityEnterprise-grade
IAMAccess control
EU AI ActCompliant
DLPData protection
V8 IsolateSandboxed
Ed25519Audit chain
<40msKill switch
Stream every event to Splunk, Datadog, or your own webhook in real-time

* Every MCP server runs on Vinkius-managed infrastructure inside AWS - a purpose-built runtime with per-request V8 isolates, Ed25519 signed audit chains, and sub-40ms cold starts optimized for native MCP execution. See our infrastructure

The Vinkius Advantage

How Vinkius secures Resend for OpenAI Agents SDK

Every tool call from OpenAI Agents SDK to the Resend MCP Server is protected by DLP redaction, cryptographic audit chains, V8 sandbox isolation, kill switch, and financial circuit breakers.

< 40msCold start
Ed25519Signed audit chain
60%Token savings
FAQ

Frequently asked questions

01

Can my AI automatically find the details for a specific email just by providing its ID?

Yes! Use the get_email tool with the Email ID. Your agent will respond with complete metadata, including delivery status, timestamps, and recipient info in seconds.

02

How do I find my Resend API Key?

Log in to your Resend dashboard, navigate to the API Keys section, and generate a new key (it will start with re_). Copy and save it securely.

03

How does the OpenAI Agents SDK connect to MCP?

Use MCPServerSse(url=...) to create a server connection. The SDK auto-discovers all tools and makes them available to your agent with full type information.

04

Can I use multiple MCP servers in one agent?

Yes. Pass a list of MCPServerSse instances to the agent constructor. The agent can use tools from all connected servers within a single run.

05

Does the SDK support streaming responses?

Yes. The SDK supports SSE and Streamable HTTP transports, both of which work natively with Vinkius.

06

MCPServerStreamableHttp not found

Ensure you have the latest version: pip install --upgrade openai-agents

07

Agent not calling tools

Make sure your prompt explicitly references the task the tools can help with.