spotify-mcp

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

With no annotations provided, the description carries the full disclosure burden. It successfully explains the core algorithm (the 3-track threshold for 'Various'), but omits operational details like whether the original playlist is preserved, how new playlists are named, or rate limiting concerns.

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 with zero waste: the first states the primary action, the second specifies the edge-case handling. Every word earns its place and critical information is front-loaded.

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 existence of an output schema (covering return values) and the description's clear explanation of the splitting logic, the tool is adequately documented for basic usage. However, gaps remain regarding side effects (naming conventions, original playlist fate) and the 0% schema coverage leaves the parameter under-specified.

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 coverage is 0% (no description fields in the JSON schema). The description compensates minimally by referencing 'a playlist' which maps to the playlist_id parameter conceptually, though it doesn't explicitly describe the parameter format or constraints. Baseline compensation for low coverage.

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 verbs ('Split') and resources ('playlist') and clearly defines the unique grouping logic (per-artist sub-playlists with a 'Various' catch-all for <3 tracks). This effectively distinguishes it from siblings like spotify_merge_playlists or spotify_sort_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?

The description implies usage context through the behavioral specification (artist-based organization), but lacks explicit when-to-use guidance or named alternatives. It doesn't state prerequisites like playlist ownership or permissions needed to create new playlists.

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