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nkarasiak

QGIS MCP

by nkarasiak

Add Layout Map

add_layout_map

Add a map item to a print layout by specifying its position and size in millimeters.

Instructions

Add a map item to a print layout at specified position and size (in millimeters).

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
layout_nameYes
xYes
yYes
widthYes
heightYes
Behavior2/5

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

With no annotations, the description carries full burden for behavioral disclosure. It mentions units but does not specify side effects (e.g., overwriting), error conditions, or whether the map item references current canvas content.

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?

The description is a single clear sentence, but could be restructured with bullet points for better scannability while remaining concise.

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

Completeness2/5

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

Given 5 required parameters, no output schema, and no annotations, the description lacks essential context such as how the map item is populated, layout existence prerequisite, and error handling.

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 description coverage is 0%, and the description only generically mentions 'position and size' without explaining each parameter's meaning, coordinate origin, or unit details beyond 'millimeters'.

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 states the action (add), resource (map item to a print layout), and specifies position and size in millimeters. It distinguishes from sibling tools like create_layout or export_layout.

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 this tool versus alternatives, no prerequisites mentioned (e.g., layout must exist), and no exclusion criteria.

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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