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

Annotations already declare readOnlyHint=true, idempotentHint=true and destructiveHint=false, so the safety profile is covered. The description adds the filtering direction semantics but says nothing about pagination, result limits, or what happens with no filter — and the pagination behavior is documented only in the schema, not here.

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 no filler, and the core listing purpose is front-loaded before the filter explanation. Efficient and readable, though not maximally information-dense.

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?

With four optional, fully schema-documented parameters and no output schema, the description covers the essential calling context. It could state what an unfiltered call returns, but nothing critical to correct invocation 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%, so page/per_page/part_id/asset_id are already documented in the schema, making 3 the baseline. The description does add interpretive value by explaining what filtering on asset_id versus part_id yields, but it does not clarify the unfiltered default beyond what the schema implies.

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 ('List parts associated with assets') and clarifies that this is a join/association listing with two filter directions. It does not, however, differentiate itself from close siblings such as list_parts or list_infrastructure_asset_parts, leaving the agent to infer which listing tool to pick.

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 explains the semantics of the two filters ('filter by asset_id to get all parts for one asset, or by part_id to see all assets using a specific part'), which is useful selection guidance within the tool. It gives no when-to-use-vs-alternatives guidance and no prerequisites, so usage is implied rather than stated.

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