Apply Map Theme

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

The description aligns with the idempotentHint annotation by stating the tool restores a saved state, implying repeated applications yield the same result. However, it does not add significant behavioral context beyond what the annotation already suggests, such as what happens if the theme name is invalid.

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

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

The description is a single sentence that is concise, front-loads the primary action ('apply'), and avoids unnecessary words. Every part contributes to understanding the tool's core function.

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

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

For a simple tool with one parameter and no output schema, the description adequately explains the main effect. However, it lacks context on error cases (e.g., missing theme) and how to discover available themes, which would help the agent use the tool correctly.

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

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

The input schema defines a single required parameter 'name' as a string, but the description does not explain what 'name' refers to (e.g., the theme's name, how to obtain valid names, or naming conventions). With 0% schema description coverage, the description fails to add meaning beyond the schema.

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

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

Description clearly states the tool 'applies a map theme' and specifies it 'restores the layer visibility state saved in the theme.' This distinguishes it from sibling tools like add_map_theme (which creates a theme) and remove_map_theme (which deletes a theme). The verb 'apply' and resource 'map theme' are specific and unambiguous.

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

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

The description implies usage when the user wants to restore a saved layer visibility state, but it does not explicitly state when to use this tool versus alternatives (e.g., add_map_theme, remove_map_theme). No exclusions or prerequisites are mentioned.

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