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nkarasiak

QGIS MCP

by nkarasiak

Duplicate Layer

duplicate_layer

Duplicate any QGIS layer with its style preserved, creating a copy under a new name.

Instructions

Duplicate a layer (including its style) under a new name.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
layer_idYes
new_nameNo
Behavior2/5

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

No annotations provided; description only mentions style inclusion but omits other behavioral details such as creation of new layer, permissions, or error conditions.

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?

Single sentence with no superfluous words; action and resource are front-loaded.

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

Completeness3/5

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

Lacks output description and error handling info, but for a simple duplication tool with two parameters, it is marginally adequate.

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

Parameters2/5

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

Schema has 0% coverage; description adds minimal meaning beyond names—only 'under a new name' hints at the new_name parameter but does not explain behavior when null or format constraints.

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?

Description clearly states the verb 'duplicate' and resource 'layer', explicitly including style preservation. It distinguishes from sibling tools like add_layer and remove_layer.

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 guidance on when to use duplication over other operations, nor any prerequisites or restrictions.

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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