list_playlists

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

Annotations already declare readOnlyHint=true, idempotentHint=true, and destructiveHint=false. The description adds only the endpoint and parameter hints, with no behavioral context such as pagination, result size, or authentication requirements. It does not contradict annotations, but it also adds no meaningful behavioral transparency beyond them.

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 short and front-loaded with the main purpose and endpoint, followed by compact parameter notes. There is no filler or redundant restating of the schema, though the parameter descriptions could be more precise.

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?

Although the tool has output schema and annotations that cover its read-only/idempotent safety profile, the description fails to clarify the ambiguous relationship between 'playlist_type' and 'type', and gives no usage context or exclusion guidance. For a list tool with two optional filters, this is an incomplete picture for correct invocation.

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%, so the description must carry the full burden for parameters. 'playlist_type: Limit to a type of playlist' is vague, and 'type: Filter by playlist type' is nearly identical, creating confusion about which to use. The only concrete detail is 'Use 42 for optimized/conversion items', which is insufficient to make the parameters actionable.

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?

Description states a clear verb and resource ('List playlists') with the endpoint 'GET /playlists'. It is easily distinguishable from sibling tools like get_playlists_by_playlist_id (single playlist) and create_playlists/update_playlists/delete_playlists (mutations).

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 guidance is given about when to use this tool versus alternatives. The description does not mention that this lists all playlists while get_playlists_by_playlist_id retrieves a specific one, nor does it explain when the two filter parameters should be used.

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