Add Subcategory To Category

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

Annotations already indicate readOnlyHint=false and destructiveHint=false. The description adds that the tool is a mutation (creates records) and returns HTTP 201, but does not disclose side effects, rate limits, or authorization requirements. No contradiction with 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?

The description is short but contains redundancy (e.g., 'Add a Subcategory...' and 'Use this to create...' repeated) and includes detailed endpoint URL that may not be necessary. Front-loading is adequate.

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?

No output schema is provided, so the description should clarify the response structure beyond 'returns UUID' and 'returns created object'—these are slightly inconsistent. Missing error conditions, prerequisites, or response statuses beyond 201. More detail needed for completeness.

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?

Schema coverage is 100% with descriptions for each parameter. The description lists required parameters but adds no new meaning beyond the schema, so baseline 3 is appropriate.

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 the action (Add a Subcategory to a Category in a Project), identifies the resource (Subcategory), and distinguishes it from sibling tools like add_category_to_project. It also specifies the success response (UUID) and endpoint.

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 for creating Resource Planning records but does not provide explicit guidance on when to use this tool versus alternatives (e.g., add_category_to_project) or when not to use it. No exclusions or alternatives are mentioned.

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