statsfm_charts_tracks

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

With no annotations provided, the description carries the full burden for behavioral transparency, but it only describes the output (chart of top tracks) without mentioning side effects, authentication requirements, or rate limits. 'Movement indicators' hints at output format but not how the tool behaves.

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 a single, concise sentence with no redundancy. It front-loads the core purpose ('All-time chart of a user's top tracks') and adds a distinguishing feature ('movement indicators') without unnecessary elaboration.

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 no output schema, the description should provide enough context about the return format and content. It mentions 'chart' and 'movement indicators' but does not explain what the response includes (e.g., track names, rankings, position changes) or how the response_format parameter affects output. Moderate complexity (5 params, 1 required) leaves room for ambiguity.

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% (all parameters have descriptions), so the baseline is 3. The tool description adds no additional parameter semantics beyond what the schema already provides, such as specifying that limit/offset control pagination or that response_format changes the response shape.

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 returns an all-time chart of a user's top tracks, with movement indicators. This distinguishes it from other top-track tools like statsfm_top_tracks, which likely lacks the 'movement indicators' aspect. The verb is implied but unambiguous.

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 implies usage for all-time top tracks with movement direction, but it does not explicitly mention when to use this tool over siblings like statsfm_top_tracks or get_top_tracks. No exclusions or alternative references are provided.

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