create-outlook-category

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

Annotations already declare readOnlyHint=false and destructiveHint=true, so the description does not carry the full safety burden. It adds behavioral context such as uniqueness and case sensitivity, which are beyond annotations. However, it does not explain side effects, permission requirements, or the result of creation, leaving gaps that annotations only partially cover.

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 fairly concise and front-loads the main action. The tip section repeats the action but also provides essential parameter details (color mapping, uniqueness) that are not redundant. There is minor redundancy between the first sentence and the tip, but overall it is efficient and well-structured with a clear format.

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?

The tool has a nested body schema, no output schema, and annotations already indicate it is a write operation. The description explains required parameters and constraints, but does not mention authentication prerequisites, potential confirmation requirements (though the schema documents the confirm parameter), or what the response contains. It is adequate but not exhaustive for an agent that might need to handle responses or understand side effects.

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 description adds meaning beyond the input schema by mapping color preset values to human-readable names and emphasizing displayName uniqueness and case sensitivity. With schema coverage at 75%, the description compensates for the undocumented 'color' parameter and enriches understanding of 'body' fields, which is valuable.

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 states a specific action (create) with a clear resource (outlookCategory object) and scope (user's master list of categories). It is not a tautology and clearly distinguishes from sibling tools like list-outlook-categories by its verb. The addition of uniqueness and case-sensitivity constraints further clarifies the object's semantics.

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 by stating it creates a category, but it does not explicitly mention when to use this tool versus alternatives, nor does it provide exclusions or preconditions. The note about case sensitivity is a usage detail, but there is no guidance on when to prefer this over other category-related tools.

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