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by io.github.mailercloud-com
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Clone Template

clone_template

Copy an existing template under a new name: same content, category and editor, so a drag-and-drop template stays editable in the drag-and-drop editor. The original is not changed. Needs template_id. Set dry_run: true to see the copy's name without creating it.

Tool call template

Replace each placeholder with a value matching the input schema. Only required parameters are included; add optional parameters as needed.

{
  "id": 1,
  "jsonrpc": "2.0",
  "method": "tools/call",
  "params": {
    "arguments": {
      "template_id": "<template_id>"
    },
    "name": "clone_template"
  }
}

Input Schema

NameRequiredDescriptionDefault
nameNoName for the copy (default: the original name followed by (Copy))
dry_runNoShow what would be created without creating anything
template_idYesID of the template to copy (from list_templates)

Schema Changelog

Changes observed during successful MCP inspections.

  1. Added

TDQS

A3.7/5.0
Behavior4/5

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

Adds real context beyond the annotations: the original is left unmodified (reinforcing destructiveHint=false), the copy inherits content/category/editor, and dry_run reveals the resulting name. It stays silent on the fact that repeated calls create additional copies (relevant given idempotentHint=false) and on any permission or naming-collision behavior.

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

Conciseness4/5

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

Four short, front-loaded sentences with the core action first and preview/dry-run guidance last. The sentence 'Needs template_id' is the only clear redundancy, since the schema already marks it required.

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?

For a three-parameter mutation tool with no output schema but full annotation coverage, the description covers the essentials: what is copied, that the source is untouched, and a safe preview path. Minor gaps remain around what the response contains (the new template's ID) and duplicate-call behavior.

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?

Schema coverage is 100%, so all three parameters are already documented, including the (Copy) default naming. The description's 'Needs template_id' merely restates the required field, and its dry_run note slightly expands what the schema says but adds no new syntax or format detail. Baseline 3 is warranted.

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

Purpose4/5

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

States a specific verb and resource ('Copy an existing template under a new name') and adds what is carried over (content, category, editor), which distinguishes it from create_template and create_dnd_email_template. It does not name a sibling alternative explicitly, so an agent must infer the boundary rather than being told.

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

Usage Guidelines3/5

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

Usage is implied: clone when you want the original's content preserved, and use dry_run to preview first. There is no explicit 'use create_template instead if starting from scratch', and no statement of prerequisites (e.g., that the template must be DnD-editable) beyond the passing mention of the drag-and-drop editor.

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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