Save Spotify Albums

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

Annotations already convey idempotency and non-destructiveness. The description adds a behavioral note about verifying the resulting state, which is useful, but the phrase 'current shared library endpoint' is vague and introduces ambiguity. It does not contradict annotations, but the behavioral context is limited.

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 of about 16 words, efficient and front-loaded. It conveys the essential purpose and a key behavioral nuance without any fluff 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?

The tool is simple (one parameter, output schema present) and annotations cover key behavioral traits. However, the description lacks usage guidance and sibling differentiation, and the ambiguous 'shared library endpoint' leaves room for misinterpretation. Overall, it is adequate but not fully complete for an agent to confidently invoke without extra assumptions.

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?

With schema description coverage at 0%, the description must compensate. It adds the qualifier 'exact', clarifying that the album_ids parameter requires exact Spotify album IDs, not names or fuzzy matches. However, it does not explain the format, the min/max array bounds, or any other parameter details, so compensation is only partial.

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 action ('Save'), the resource ('exact Spotify album IDs'), and adds a unique behavior ('verify the resulting state once'). It distinguishes itself from siblings like spotify_album_library_remove and spotify_album_library_contains, making the purpose 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 does not provide explicit guidance on when to use this tool vs alternatives (e.g., spotify_library_save). It implies usage for saving albums by ID but does not mention exclusions or preference, leaving the agent to infer from the name and context.

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