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Email Sending MCP

by resend

Duplicate Template

duplicate-template

Duplicate an existing email template in Resend to create a new draft copy with a new ID. Accepts a template ID, alias, or dashboard URL.

Instructions

Duplicate an existing email template in Resend. Creates a new draft copy of the template with a new ID. Accepts a template ID, alias, or Resend dashboard URL.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
idYesThe ID, alias, or Resend dashboard URL (e.g. https://resend.com/templates/<id>) of the template to duplicate.
Behavior3/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

The description discloses that the tool creates a draft copy with a new ID, implying the original is unchanged and the result is a draft. However, it lacks details on permissions, error conditions, or side effects, which is notable given no annotations are provided.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness5/5

Is the description appropriately sized, front-loaded, and free of redundancy?

Two concise sentences that front-load the core action and outcome. No unnecessary words or repetition.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness4/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Given the tool's simplicity (one parameter, no output schema, no annotations), the description covers the essential purpose, input, and result. It is adequate but could mention return values or error handling.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters3/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

The input schema already provides a detailed description of the 'id' parameter (ID, alias, or URL). The description merely echoes this, adding no extra meaning. With 100% schema coverage, baseline is 3.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly specifies the verb 'duplicate' and the resource 'email template', stating that it creates a new draft copy with a new ID. This differentiates it from sibling tools like create-template, update-template, and publish-template.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines2/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

No explicit guidance on when to use this tool versus alternatives. The description does not mention conditions, exclusions, or prerequisites, leaving the agent to infer from context.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

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