icu_update_gear_reminder

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

Annotations already indicate mutation (readOnlyHint false), non-destructive (destructiveHint false), and idempotency (idempotentHint true). The description adds the partial update behavior, which is consistent. No additional behavioral context (e.g., authentication, side effects) is provided beyond what annotations offer.

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 extremely concise at two short sentences, with no redundant information. It front-loads the action and immediately clarifies the partial update behavior. Every word earns its place.

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?

Given the tool has an output schema (implied) and 100% schema coverage, the description is fairly complete for a simple update. It explains the partial update behavior. However, it could mention prerequisite conditions (e.g., gear and reminder must exist) or error scenarios, but the essence is covered.

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%, so each parameter is already described in the input schema. The description does not add any extra meaning or context beyond the schema fields, so baseline score of 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 tool updates an existing gear maintenance reminder, using a specific verb ('Update') and resource ('gear maintenance reminder'). It distinguishes from siblings like create or delete, and the behavior is explicit.

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 provides guidance on how to use the tool (partial update via 'Only fields you pass are sent'), but does not explicitly mention when to use it vs alternatives (e.g., create when reminder doesn't exist) or any prerequisites. Context is adequate but could be improved.

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