spotify-mcp

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

With no annotations provided, the description carries the full burden. It successfully conveys that the playlist starts 'empty' (no tracks), but omits other critical behavioral details like idempotency, error handling for duplicate names, or side effects. The output schema handles return value documentation.

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?

Extremely concise single sentence with no filler words. However, given the information gaps elsewhere (zero param coverage, no annotations), the description may be inappropriately terse rather than efficiently structured.

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?

Inadequate for a mutation tool with 3 parameters and zero annotation coverage. The description fails to compensate for the lack of schema descriptions or safety annotations (destructiveHint, etc.), leaving significant behavioral and parametric gaps despite the output schema handling return values.

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. While it references the 'name' parameter ('given name'), it completely omits the 'description' and 'public' parameters, leaving their semantics undocumented in both schema and 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?

States the specific action ('Create') and resource ('new empty playlist') clearly. The qualifier 'empty' implicitly distinguishes it from sibling tools like spotify_add_to_playlist, though it doesn't explicitly contrast with spotify_update_playlist.

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?

Provides no guidance on when to use this tool versus alternatives (e.g., spotify_update_playlist for existing playlists) or prerequisites (authentication requirements). The description is purely definitional without workflow context.

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