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

Annotations already declare readOnlyHint=false, idempotentHint=false, and destructiveHint=false, so the safety profile is largely covered by structured data. The description adds one genuinely useful behavioral fact beyond the annotations: the required work_categories:write scope. It omits other traits, such as duplicate-name behavior or what is returned, which matters given idempotentHint=false.

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 with zero filler; the purpose is front-loaded and the authorization requirement follows immediately. Nothing could be trimmed without losing information.

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 three-parameter create tool with full schema documentation and clear annotations, the description is adequate but thin: it never indicates what the call returns (no output schema exists) or how the created category can subsequently be referenced. An agent can call it correctly, but context about outcomes is missing.

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 description coverage is 100%, including enum values for 'module' and length constraints, so the schema carries the full parameter burden. The description adds no parameter meaning beyond it, which lands at the baseline 3 for a fully documented 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?

States a specific verb and resource ('Create a new work category'), so the operation is unambiguous. However, it does nothing to distinguish this from adjacent create siblings such as create_cost_category or create_part_category, leaving the agent to infer the distinction from the name alone.

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 only states an auth prerequisite; it gives no when-to-use guidance, no conditions, and no pointer to alternatives like create_cost_category or the update/delete counterparts. The agent gets a permission requirement but no routing help.

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