get_chart

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

With no annotations, the description must disclose behavioral traits. It only says 'fetch,' implying a read operation, but does not mention auth requirements, rate limits, or any side effects. The lack of detail on return format (despite output schema) or safe usage lowers the score.

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 sentence that conveys the core purpose efficiently. No unnecessary words or redundancy.

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?

For a simple fetch tool with only two parameters and an output schema, the description is minimally adequate. However, it does not explain what an 'editorial chart' is, how to find valid keys, or describe the output structure. More context would improve completeness.

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?

The input schema has 0% description coverage for parameters, and the description does not explain the meaning of 'key' (beyond an example) or 'max_tracks' (e.g., its purpose, bounds, or effect). This fails to add value beyond the raw schema.

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 identifies the action (fetch) and resource (editorial chart) with an example ('top-50-global'), and the phrase 'as a playlist' adds specificity. It distinguishes from siblings like list_charts (lists charts) and get_playlist (gets user playlists).

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 provided on when to use this tool versus alternatives (e.g., list_charts, get_playlist), nor any prerequisites or exclusions. The description only states what it does, not the context for invocation.

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