Album

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

With readOnlyHint=false declared, the description usefully explains the seeming contradiction by noting these are 'read-like POST requests' that 'do not publish to social platforms', and flags paid credit consumption plus the confirm=true gate. It stops short of describing rate limits or failure behavior, but it adds genuine context beyond 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?

Two sentences, front-loaded with the resource and return contents, then the cost/permission constraint. Only minor waste in the trailing 'and more by the artist' clause, which is vague filler.

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?

No output schema exists, yet the description enumerates the returned fields, and it covers the key operational facts (credits, confirm gate, non-publishing nature). Credential selection via the account parameter is left to the schema.

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%, so id/url/account/confirm are already documented in the schema, including the 'must be true' semantics covered in the description. The description adds no syntax or format detail beyond that, so the baseline 3 applies.

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?

States a specific verb and resource ('Retrieves public Apple Music album details') and enumerates the returned content (title, artist, artwork, release info, tracks). It is clearly distinct from apple_music_artist and apple_music_track by resource, though it never names those siblings explicitly.

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?

Gives a real prerequisite ('requires confirm=true') and a cost warning, which orients usage. However, it never says when to choose this over apple_music_search, apple_music_artist, or the Spotify equivalents, so routing vs alternatives is left to inference.

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