spotify_popular_by_country

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

No annotations are provided, so the description must fully disclose behavioral traits. It mentions the data source and parameter format but does not state crucial details: whether the tool is read-only, requires authentication, has rate limits, or what happens when the parameter is omitted. This is insufficient for safe and effective usage.

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 extremely concise with two short sentences, no unnecessary words, and front-loaded with the core purpose. Every sentence adds meaningful information.

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?

There is no output schema, so the description should elaborate on the return format. It vaguely mentions 'normalized Spotify country hub shelves' but does not specify the structure, fields, or examples. Essential for an agent to interpret results correctly. The optionality of the parameter is also not clarified.

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 schema description coverage is 100% (the single parameter 'country_code' has a description). The description adds value by providing an example URL and explaining that the code comes from open.spotify.com, which aids parameter understanding beyond the schema's minimal description.

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 uses a specific verb ('Retrieve') and resource ('Spotify popular by country'), clearly stating what the tool does. It mentions the normalized shelves from a specific endpoint, which adds precision. However, it does not explicitly distinguish itself from similar sibling tools like spotify_featured_charts_by_country, slightly reducing clarity.

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 provides no guidance on when to use this tool versus alternatives like spotify_featured_charts_by_country or spotify_search. It lacks when-to-use and when-not-to-use information, making it hard for an agent to select this tool correctly among many similar Spotify tools.

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