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Resend MCP Tools for AI Agents

Let an agent send transactional email, check delivery status, and reschedule or cancel messages that have not been sent.

Available Tools

5 tools available in this integration

Resend.CancelEmail

Cancel a scheduled, not-yet-sent email.

Resend.GetEmail

Retrieve a single email by its Resend ID, including current delivery status.

Resend.RescheduleEmail

Reschedule a not-yet-sent email by updating its scheduled_at timestamp.

Resend.SendEmail

Send a transactional email through Resend.

Resend.UpdateEmail

Reschedule a not-yet-sent email by updating its scheduled_at timestamp.

Why agent-optimized tools matter

Built for intent, not API schemas

Ask the agent to "send a payment receipt, schedule it for tomorrow, and report its delivery status." Arcade picks the right Resend tools without guessing email IDs or schedule details.

Up to 100x fewer tokens

Resend delivery lookups return focused status details, so the agent can check a sent email without loading an inbox, message archive, or unrelated delivery history into the model.

Complete the workflow end to end

Compose and send an email, check its delivery status, reschedule a pending message, cancel it, and report the result through one toolkit designed around the complete transactional email task.

Make actions predictable and controlled

Arcade tools return structured results and useful errors across users and runs. Teams can apply scope restrictions, redaction, and approval policies so agents follow the same controls every time.

Securing Resend

The more capabilities agents get, the more useful they are. However, more capabilities bring more risks of undesired effects such as data loss and exfiltration.

This is why Arcade provides you with contextual rules that dictate how and when a tool is allowed to run. Arcade’s contextual access lets you govern tool visibility and behavior at every stage of execution and control who can see a tool, what inputs are allowed, and what comes back.

Learn about Contextual Access Policies

For Resend, you can implement some of these policies:

Access when tools are listed for a user
  • Hide Resend.CancelEmail from agents unless the roles your IDP marks as billing or messaging owners are active, so unauthorized agents cannot cancel scheduled customer emails.
  • Restrict Resend.RescheduleEmail to agents operating under your messaging-operations role, so unreviewed automation cannot move scheduled sends into an inappropriate delivery window.
  • Deny Resend.SendEmail to read-only agents, so agents intended only to inspect delivery records cannot send messages to customers.
  • Hide Resend.UpdateEmail from agents unless the roles your IDP marks as messaging owners are active, so unapproved agents cannot alter when customer emails are delivered.
Pre-execution before each tool call
  • Require human approval before Resend.CancelEmail runs, so an agent cannot cancel a scheduled customer email without review.
  • Block Resend.RescheduleEmail when the new delivery time falls outside your approved sending window, so an agent cannot move a message to an unauthorized time.
  • Require human approval before Resend.SendEmail runs, so an agent cannot email customers or vendors unprompted.
  • Require human approval before Resend.UpdateEmail runs, so a scheduled customer email cannot be moved without review.
Post-execution after the tool returns
  • Redact message bodies, recipient addresses, and other personal data from Resend.GetEmail results before they reach the model, while retaining the delivery status needed for troubleshooting.

How to use Resend with your agent

Pick your MCP client below and follow the setup to connect Resend to your agent. You can then send and manage transactional email through Arcade.

Your questions, answered

A Resend MCP server exposes Resend email operations as structured tools that an AI agent can call through the Model Context Protocol. Agents can send transactional email, check delivery status, reschedule scheduled messages, and cancel messages that have not been sent.

Resend does not provide the MCP server used here; Arcade hosts the integration and adds authenticated access, approval policies, redaction, and one connection path for supported clients. The integration uses a shared Resend API key configured in Arcade.

Arcade agents can send transactional email, retrieve the delivery status of a specific email, reschedule email that has not been sent, update its scheduled time, and cancel scheduled email before it is sent.

Arcade uses the shared Resend API key configured for the integration. That key determines which Resend operations the agent can perform; there is no separate per-user OAuth permission grant described for this connection.

No. Resend uses one shared API key or secret configured once, rather than having each user authorize an individual Resend account. Arcade brokers the credential so the model does not receive it.

Yes. Contextual Access policies can require human approval before sending, rescheduling, or canceling a consequential Resend email. The call proceeds only after the policy's conditions have been satisfied.

Arcade proxies Resend API calls and does not persist your email content as part of normal tool execution. The shared credential is brokered and stored encrypted at rest, and the model never receives it.

Any framework or client that can connect to Arcade's MCP gateway or tool APIs works, including LangChain, OpenAI Agents, CrewAI, Claude Desktop, Claude Code, Cursor, Visual Studio Code, Microsoft Copilot Studio, and GitHub Copilot.

Arcade can use the configured credential while it remains valid. If the Resend API key is revoked, rotated, or can no longer be used, calls stop until the credential is reconfigured.

Resend's API rate limits and account-level sending limits still apply to calls made through Arcade. No additional Resend-specific quotas are specified here, so your Resend account's limits govern sending and management operations.

Ready to actually ship your agent?

Connect your agent to Resend with a shared API key, agent-optimized tools and approval controls for consequential actions.

Build Your Agent Read the Resend Quickstart