update_playlist

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 'update' implying mutation but doesn't indicate whether it performs a partial update, what happens to unspecified fields, if authentication is required, or what the response looks like. For a mutation tool with zero annotation coverage, 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.

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

The description is a single, focused sentence with no unnecessary words. It front-loads the action and resource, and the list of attributes is compact. It's appropriately sized for the tool's purpose, though it sacrifices completeness for brevity.

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?

With five parameters, no output schema, and no annotations, the description is too thin. It doesn't explain update semantics (partial vs full), the need for an existing playlist, the role of the required id, or the collaborative field. An agent would likely need to infer or inspect the schema to call this correctly, which is a substantial gap.

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 100%, so the schema already documents all five parameters. The description adds marginal value by enumerating some fields (name, description, visibility) but omits collaborative and doesn't emphasize that id is required. It doesn't compensate for any gaps since coverage is complete, but it doesn't confuse either.

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 (update) and resource (playlist), and lists three attributes (name, description, visibility) that map to schema properties (public for visibility). It distinguishes from siblings like create_playlist or add_to_playlist. However, it omits the collaborative attribute, making the scope slightly incomplete and potentially confusing.

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 on when to use this tool versus alternatives. It doesn't mention that this is for modifying playlist metadata (as opposed to adding/removing tracks or reordering items), nor does it state any prerequisites or edge cases. The description is purely definitional with no contextual usage hints.

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