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

Annotations already declare destructiveHint=true, idempotentHint=true, and readOnlyHint=false, so the safety profile is covered structurally. The description adds auth scope, which annotations do not capture, but is silent on the operationally important question of whether deletion cascades or is blocked when parts still reference the category.

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 short sentences, action front-loaded, prerequisite second. Zero filler and nothing a reader must scan past.

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 one-parameter destructive delete with rich annotations and no output schema, the description covers the essentials: what it deletes, how it identifies it, and the required scope. Only referential-integrity/cascade behavior is left unstated, a minor gap given the annotations already flag destructiveness.

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?

Single 'id' parameter with 100% schema description coverage; the schema already documents the UUID format and pattern. 'By ID' in the description adds nothing beyond it, so the baseline 3 applies.

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?

States a specific verb (delete), resource (part category), and lookup key (by ID) in one sentence. Among ~250 delete_* siblings, 'part category' is precise enough to distinguish it from delete_part and delete_cost_category without opening a schema.

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 supplies a prerequisite ('Requires part_categories:write scope'), which is real usage context, but it never states when to use this tool versus update_part_category or list_part_categories, nor any exclusions (e.g., categories still referenced by parts). Implied usage only.

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