get_library_parts_by_part_id_indexes_by_index

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

Annotations already declare readOnlyHint, idempotentHint, and non-destructive behavior, so the safety profile is covered. The description adds the interval semantics in milliseconds but does not go further to describe response characteristics, rate limits, or any other behavioral nuances. It does not contradict the 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 compact and well structured: a one-sentence purpose, the HTTP route, and a short argument list. Every line adds useful information and there is no padding or repetition.

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?

The description provides enough for a basic invocation of the endpoint, and the output schema covers return-value expectations. It is incomplete, though, because it never clarifies what values 'index' can take or how this endpoint differs from the by_offset sibling, which is important for correct tool selection.

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 0%, so the description must compensate, and it does provide a one-line explanation for each parameter. However, 'index: The type of index to grab' is vague and does not enumerate acceptable values, and interval's optionality/default is not mentioned, leaving meaningful gaps.

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 states a clear action and resource: 'Get BIF index for a part' with the explicit endpoint. However, it does not distinguish itself from the closely named sibling get_library_parts_by_part_id_indexes_by_index_by_offset, so an agent could struggle to choose between them based on description 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?

There is no guidance about when to use this tool versus related alternatives, especially the near-identical offset variant. No exclusions, prerequisites, or context are provided, so the agent must infer usage entirely from the endpoint and parameter names.

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