spotify-mcp

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

With no annotations provided, the description carries full burden and successfully discloses key behavioral traits: the recommendation algorithm (top artists + related artists) and deduplication logic ('excluding existing tracks'). However, it omits whether this creates a new playlist vs. modifying existing, and lacks auth/scope warnings.

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?

Single 16-word sentence with zero waste. Every phrase earns its place: action verb, resource type, source algorithm, and deduplication rule. Perfectly front-loaded with the action 'Generate'.

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?

Given the output schema exists, the description appropriately omits return value details. However, for a 3-parameter tool with zero schema documentation, the description should have explicitly addressed parameter purposes and side effects (e.g., confirming a new playlist is created), leaving gaps in operational context.

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%, requiring the description to compensate for all three parameters (playlist_id, name, track_count). While 'existing playlist' implicitly maps to playlist_id, the description fails to mention the 'name' parameter (likely for the new playlist) or 'track_count', leaving parameters effectively undocumented.

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 specific verb 'Generate' with clear resource 'radio playlist' and explicitly defines the unique mechanism ('from an existing playlist's top artists and their related artists'), effectively distinguishing it from sibling tools like spotify_create_radio (likely seed-based) and spotify_artist_deep_dive (single artist focus).

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?

While the mechanism description ('from an existing playlist') implies usage context (when user wants to expand an existing playlist), there are no explicit when-to-use guidelines or comparisons to alternatives like spotify_create_radio or spotify_discover_by_artist.

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