spotify-mcp

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

No annotations are provided, so the description carries full disclosure burden. It adds valuable behavioral context by specifying 'first page of tracks,' alerting agents to pagination behavior that structured data doesn't reveal. However, it omits other critical behaviors: error handling for invalid IDs, rate limiting, whether this requires specific OAuth scopes, or what constitutes a 'page' size.

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 single sentence is front-loaded with the core action and efficiently conveys dual functionality (details + tracks). However, given the 0% schema coverage and lack of parameter documentation, the description is overly terse and misses essential information that should have been included.

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?

Since an output schema exists, the description appropriately omits return value details. However, with 0% parameter schema coverage and no usage guidelines, the description leaves significant gaps for a tool that interacts with external resources. It should have addressed the playlist_id format and distinguished itself from spotify_get_playlist_tracks.

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 0% (the playlist_id parameter has only a title, no description). The description completely fails to compensate by explaining what a playlist_id is (Spotify URI, base-62 ID, or URL), what format is expected, or how to obtain it. This leaves the agent without guidance for the sole required parameter.

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 retrieves 'playlist details' and 'its first page of tracks,' providing specific verbs and resources. However, it does not explicitly differentiate from sibling tool spotify_get_playlist_tracks, leaving ambiguity about whether this tool should be used when only metadata is needed versus when tracks are also required.

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_get_playlist_tracks (for full track listings) or spotify_get_my_playlists (for user's own playlists). No prerequisites, exclusions, or workflow context is provided.

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