Create playlist

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

With no annotations provided, the description must disclose behavioral traits. It mentions the playlist can start empty and hold podcast episodes, but it omits other important details such as required permissions, idempotency, behavior on duplicate names, error handling, or return value. This leaves gaps for a creation 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 only two sentences, front-loaded with the core purpose, and contains no extraneous words. Every sentence earns its place by either defining the action or differentiating from a sibling.

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?

The description is adequate for a straightforward creation tool with a rich schema, but it fails to mention return values or post-creation behavior. Since there is no output schema, hinting at what the tool returns would improve completeness. It also lacks detail on error conditions or side effects.

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 baseline is 3. The description adds no unique parameter information beyond what is already in the schema. The remark about starting empty and holding episodes indirectly relates to the items parameter but does not provide new semantics.

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 verb 'Creates' and the resource 'playlist for the API key’s user'. It distinguishes from a sibling tool by noting 'Unlike a collection it may start out empty and it may hold podcast episodes', which also clarifies scope.

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 provides a direct comparison to collections, helping an agent decide when to use this tool instead of create_collection. However, it does not explicitly state when not to use it or mention any other alternatives beyond that single contrast.

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