Server Quality Checklist

Tool Scores

• SpotifyGetInfoC
  2.9/5.0
  Behavior2/5

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

  No annotations are provided, so the description carries the full burden of behavioral disclosure. It states what the tool does but lacks details on permissions needed, rate limits, response format, or error handling. For a tool with no annotations, this is a significant gap in transparency.

  Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

  Conciseness5/5

  Is the description appropriately sized, front-loaded, and free of redundancy?

  The description is a single, efficient sentence that directly states the tool's purpose without unnecessary words. It is appropriately sized and front-loaded, with every element contributing to clarity.

  Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

  Completeness2/5

  Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

  Given the complexity of handling multiple item types and no output schema, the description is incomplete. It does not explain what detailed information is returned (e.g., track details, album tracks) or handle edge cases, which is inadequate for a tool with diverse inputs and no structured output documentation.

  Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

  Parameters3/5

  Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

  Schema description coverage is 100%, with the schema providing details on the item_uri parameter, including its purpose and behavior for different item types. The description adds no additional parameter semantics beyond what the schema already covers, so it meets the baseline for high schema coverage.

  Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

  Purpose4/5

  Does the description clearly state what the tool does and how it differs from similar tools?

  The description clearly states the verb ('Get detailed information') and resource ('Spotify item'), specifying the types of items (track, album, artist, or playlist). It distinguishes this as an information retrieval tool, but does not explicitly differentiate it from sibling tools like SpotifySearch, which might also retrieve information.

  Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

  Usage Guidelines2/5

  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, such as SpotifySearch for broader queries or SpotifyPlaylist for playlist-specific operations. It lacks explicit when/when-not instructions or named alternatives, leaving usage context implied but not clarified.

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

• SpotifyPlaylistC
  2.9/5.0
  Behavior2/5

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

  With no annotations provided, the description carries the full burden of behavioral disclosure. It lists actions but fails to describe critical behavioral traits: authentication requirements (e.g., user authorization), rate limits, whether changes are reversible, error conditions, or what the tool returns. For a multi-action tool with mutations (add_tracks, remove_tracks, change_details), this is a significant gap.

  Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

  Conciseness4/5

  Is the description appropriately sized, front-loaded, and free of redundancy?

  The description is efficiently structured with a brief header followed by a bulleted list of actions. Each bullet is clear and specific. However, the first line 'Manage Spotify playlists.' is somewhat redundant with the tool name, and the description could be more front-loaded with critical behavioral information.

  Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

  Completeness2/5

  Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

  For a multi-action tool with mutations and no annotations or output schema, the description is incomplete. It lacks essential context: authentication needs, error handling, return formats, and differentiation from sibling tools. The 100% schema coverage helps with parameters, but overall guidance for an AI agent remains inadequate.

  Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

  Parameters3/5

  Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

  Schema description coverage is 100%, so the schema already documents all 5 parameters thoroughly. The description adds minimal value beyond the schema by listing action types, but doesn't provide additional semantic context (e.g., format of playlist_id, source of track_ids, or constraints on name/description changes). Baseline 3 is appropriate when the schema does the heavy lifting.

  Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

  Purpose4/5

  Does the description clearly state what the tool does and how it differs from similar tools?

  The description clearly states the tool's purpose as 'Manage Spotify playlists' and enumerates five specific actions (get, get_tracks, add_tracks, remove_tracks, change_details), providing a comprehensive overview of functionality. However, it doesn't explicitly differentiate this playlist management tool from sibling tools like SpotifyGetInfo or SpotifySearch, which likely handle different Spotify resources.

  Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

  Usage Guidelines2/5

  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 the sibling tools (SpotifyGetInfo, SpotifyPlayback, SpotifyQueue, SpotifySearch). It lists actions but offers no context about prerequisites, appropriate scenarios, or exclusions. Users must infer usage from action names alone.

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

• SpotifyQueueC
  2.9/5.0
  Behavior2/5

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

  With no annotations provided, the description carries the full burden of behavioral disclosure. It states the tool can 'get the queue or add tracks,' implying both read and write operations, but doesn't detail permissions, rate limits, side effects (e.g., queue modification impact), or response format. This is inadequate for a tool with potential mutations.

  Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

  Conciseness4/5

  Is the description appropriately sized, front-loaded, and free of redundancy?

  The description is a single, efficient sentence that front-loads the core purpose ('Manage the playback queue') and lists actions. It avoids redundancy, though it could be slightly more structured by separating action contexts.

  Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

  Completeness2/5

  Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

  Given the tool's complexity (managing queue with read/write actions), lack of annotations, and no output schema, the description is insufficient. It doesn't cover behavioral aspects like permissions, effects of adding tracks, or return values, leaving significant gaps for agent understanding.

  Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

  Parameters3/5

  Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

  Schema description coverage is 100%, so the schema fully documents the two parameters (action and track_id). The description adds no additional meaning beyond what's in the schema, such as explaining track_id format or action nuances. Baseline 3 is appropriate as the schema handles parameter documentation.

  Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

  Purpose4/5

  Does the description clearly state what the tool does and how it differs from similar tools?

  The description clearly states the tool's purpose as managing the playback queue with specific actions (get or add tracks), using a verb+resource structure. However, it doesn't distinguish this queue management from sibling tools like SpotifyPlayback or SpotifyPlaylist, which might handle similar playback or playlist functions, leaving some ambiguity about scope.

  Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

  Usage Guidelines2/5

  Does the description explain when to use this tool, when not to, or what alternatives exist?

  No explicit guidance is provided on when to use this tool versus alternatives. The description mentions actions but doesn't specify contexts, prerequisites, or exclusions relative to sibling tools like SpotifyPlayback or SpotifyPlaylist, leaving the agent to infer usage based on action types alone.

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

• SpotifySearchC
  2.9/5.0
  Behavior2/5

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

  With no annotations provided, the description carries the full burden of behavioral disclosure. It states the action ('Search') but doesn't cover key traits like whether this is a read-only operation, requires authentication, has rate limits, or what the output format might be. For a search tool with zero annotation coverage, this is a significant gap in transparency.

  Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

  Conciseness5/5

  Is the description appropriately sized, front-loaded, and free of redundancy?

  The description is a single, efficient sentence that front-loads the core purpose without any wasted words. It directly communicates what the tool does in a clear and structured manner, making it easy for an agent to parse quickly.

  Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

  Completeness2/5

  Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

  Given the complexity of a search operation with no annotations and no output schema, the description is incomplete. It doesn't explain what the search returns (e.g., list of items with details), how results are formatted, or any behavioral aspects like pagination or error handling, leaving gaps for the agent to navigate.

  Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

  Parameters3/5

  Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

  Schema description coverage is 100%, so the schema already fully documents all three parameters (query, qtype, limit). The description adds no additional meaning beyond what's in the schema, such as examples or usage nuances. This meets the baseline score when the schema does the heavy lifting.

  Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

  Purpose4/5

  Does the description clearly state what the tool does and how it differs from similar tools?

  The description clearly states the verb ('Search') and resource ('tracks, albums, artists, or playlists on Spotify'), making the purpose immediately understandable. However, it doesn't explicitly differentiate from sibling tools like SpotifyGetInfo or SpotifyPlaylist, which might also involve searching or retrieving content, so it misses the highest clarity tier.

  Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

  Usage Guidelines2/5

  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 SpotifyGetInfo or SpotifyPlaylist. It lacks context about whether this is for broad searches versus specific lookups, and offers no exclusions or prerequisites, leaving the agent to infer usage based on tool names alone.

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

• SpotifyPlaybackB
  3.1/5.0
  Behavior2/5

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

  With no annotations provided, the description carries the full burden of behavioral disclosure. It describes basic actions but omits critical details: it doesn't mention authentication requirements, rate limits, error conditions (e.g., what happens if no track is playing for 'skip'), or side effects (e.g., whether 'start' with a URI replaces the current queue). For a mutation-heavy tool (start, pause, skip) with zero annotation coverage, this is a significant gap in transparency.

  Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

  Conciseness4/5

  Is the description appropriately sized, front-loaded, and free of redundancy?

  The description is well-structured and front-loaded with the overall purpose, followed by a bulleted list of actions with concise explanations. Each bullet earns its place by clarifying action semantics. However, the repetition of the description in the input schema suggests some redundancy, and it could be slightly more efficient by integrating parameter hints directly.

  Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

  Completeness2/5

  Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

  Given the complexity of a multi-action playback tool with no annotations and no output schema, the description is incomplete. It lacks details on return values (e.g., what 'get' returns), error handling, authentication needs, and behavioral nuances (e.g., interaction between actions). For a tool with 3 parameters and mutation capabilities, this leaves significant gaps for an AI agent to operate effectively.

  Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

  Parameters3/5

  Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

  Schema description coverage is 100%, so the schema already documents all parameters (action, num_skips, spotify_uri) thoroughly. The description adds minimal value beyond the schema by listing actions but doesn't provide additional syntax, format details, or edge cases. With high schema coverage, the baseline score of 3 is appropriate as the description doesn't compensate with extra semantic insights.

  Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

  Purpose4/5

  Does the description clearly state what the tool does and how it differs from similar tools?

  The description clearly states the tool 'manages current playback' and lists four specific actions (get, start, pause, skip) with brief explanations. It distinguishes itself from siblings like SpotifyGetInfo, SpotifyPlaylist, SpotifyQueue, and SpotifySearch by focusing on playback control rather than information retrieval, playlist management, queue operations, or search. However, it doesn't explicitly contrast with each sibling tool, which prevents a perfect score.

  Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

  Usage Guidelines3/5

  Does the description explain when to use this tool, when not to, or what alternatives exist?

  The description implies usage contexts through action descriptions (e.g., 'get' for track info, 'start' to play/resume, 'pause' to stop, 'skip' to advance). However, it lacks explicit guidance on when to choose this tool over alternatives like SpotifyQueue for queue management or SpotifyGetInfo for general info. No when-not-to-use scenarios or prerequisites are mentioned, leaving usage somewhat ambiguous.

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