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map_zoom_scale

Set the map canvas scale to a specific numeric value, such as 10000 for 1:10000, to control the zoom level in the QGIS project.

Instructions

Set the map canvas scale, e.g. 10000 for a scale of 1:10000.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
scaleYes

Output Schema

TableJSON Schema
NameRequiredDescriptionDefault

No arguments

Behavior2/5

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

The description does not disclose behavioral traits beyond the basic action. No annotations are provided, so the description carries the full burden, but it lacks details on side effects, preconditions, or output behavior.

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?

The description is a single sentence with an example, containing no fluff. It is efficiently front-loaded and every word adds value.

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?

Given the tool's simplicity (one parameter), the description covers the core purpose and parameter meaning. However, it omits constraints like scale range or positivity, and does not mention the output schema despite its existence.

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

Parameters4/5

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

The input schema has no parameter description (0% coverage), but the description adds meaning by explaining the scale parameter with an example (e.g., 10000 for 1:10000). This clarifies the parameter's interpretation.

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 tool sets the map canvas scale and provides an example. The verb 'Set' and resource 'map canvas scale' are specific, and the tool is distinguishable from sibling tools like map_zoom_to_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 is given on when to use this tool versus alternatives such as map_zoom_to_layer or map_zoom_full. The description only states the action without context for selection.

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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