trends_set_arxiv_categories

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

Annotations indicate idempotentHint=true and destructiveHint=false, consistent with a configuration setter. The description adds behavioral details: weight default of 3 if omitted, and the format of entries. It does not detail overwrite behavior (e.g., whether it replaces all previous categories), but the idempotent hint implies repeated calls yield the same result. Overall, it adds value beyond the annotations.

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?

Two concise sentences with an example. The purpose is front-loaded, and every sentence adds meaningful information. No wasted words.

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 configuration tool with one parameter, the description covers the input format, defaults, and where to find valid codes. Since an output schema exists, return values need not be explained. The description is sufficiently complete for correct use.

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 only defines an array of strings with no description (0% coverage). The description thoroughly explains the parameter: each entry can be a code or code:weight, clarifies weight meaning, default value, and references valid codes. This compensates fully for the schema gap.

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?

The description clearly states it sets default arXiv categories used by trends_briefing. The verb 'set' combined with resource 'arXiv categories' specifies the action and object. Among sibling tools, this uniquely handles arXiv category configuration, distinguishing it from general configuration tools like trends_set_enabled_sources.

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 indicates when to use (to configure arXiv categories for trends_briefing) and provides an example and reference to valid codes. However, it does not explicitly state when not to use or suggest alternatives, which would improve guidance.

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