create_playlist

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

With no annotations provided, the description must fully disclose behavioral traits. It states the tool creates a playlist and returns an ID, but omits important details: whether overwriting occurs for duplicate names, what happens on failure, authorization requirements, or if the playlist is truly private by default. The description leaves significant gaps for a mutation tool.

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 description is a single sentence of 9 words, front-loading the key action and output. It is concise and to the point, though it sacrifices some necessary detail. No filler or redundancy.

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 0% schema description coverage and no annotations, the description is far from complete. It does not explain return value contents beyond 'playlist ID' (output schema exists but description doesn't reference it), error cases, or side effects. For a tool creating a resource, this is insufficient.

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%, meaning the description adds no meaning to the two parameters—'name' and 'description' are listed but not explained. The description does not mention that 'name' is required or provide any guidance on format, length, or uniqueness. The baseline would be higher with good schema docs, but here description totally fails to compensate.

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 action ('Create'), the resource ('a new private playlist'), and the result ('return its playlist ID'). It distinguishes itself from siblings like add_to_playlist or search_music, but does not specify the playlist is private by default or that the name is required—though that is implied by the schema.

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?

No explicit guidance is given on when to use this tool versus alternatives like get_playlists or add_to_playlist. It does not state prerequisites (e.g., must have account, must not exceed playlist limit) or when not to use it. The context of 'private' is a hint but insufficient for decision-making around usage.

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