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

With no annotations, the description must carry the behavioral burden. It does not disclose that this is a read operation, what the response contains, or any side effects. The only extra information is about billing and payment, which is not behavioral transparency about the tool's function.

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 short, but it is not front-loaded with the core purpose; it leads with 'Artist related' (vague) and then devotes space to billing details. The structure is not optimized for an agent to quickly grasp the tool's function.

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 is grossly incomplete for a tool with a single parameter and no output schema. It fails to explain what 'related' means, what the return value looks like, or how to use the id. An agent cannot correctly infer the tool's behavior from this description.

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% (the 'id' parameter is described as 'Artist ID'), so the baseline is 3. The tool description adds no additional parameter semantics—it doesn't clarify how 'id' is used or what 'related' means in this context. Since the schema already covers the parameter, the score stays at baseline.

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 'Artist related' is a near-tautology of the tool name and provides no verb or resource. It does not state what the tool actually does (e.g., retrieves a list of artists related to the given artist). The billing information is irrelevant to purpose and adds noise.

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?

No guidance is given on when to use this tool versus the many sibling artist tools (e.g., get_v1_1_artist_albums, get_v1_1_artist_overview). There is no mention of alternatives, prerequisites, or contextual scenarios.

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