youtube_create_playlist

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

No annotations are provided, so the description must carry the full burden of behavioral disclosure. It states it creates a playlist, which implies a write operation, but it does not disclose side effects, permission requirements, quotas, or whether the playlist is immediately available. It also does not mention that the operation likely returns a playlist ID or any response details. This is a significant gap 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 with no wasted words, which is efficient. However, it is so brief that it omits essential information. It is not front-loaded with any constraints or usage notes; it simply states the primary action. The conciseness is good, but it sacrifices necessary substance, making it minimally adequate.

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?

For a tool with three parameters, no output schema, and no annotations, the description is incomplete. It does not explain the parameters, the expected return value, any default behaviors (e.g., privacyStatus default), or any caveats about creating playlists. An agent would have to guess at how to correctly invoke this tool, especially regarding the privacy status and description fields.

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?

The schema has three parameters (name, description, privacyStatus) with 0% description coverage. The description does not mention any of these parameters, their meanings, defaults, or relationships. Since schema coverage is zero, the description must compensate but fails to add any semantic value beyond the raw schema. The agent is left to infer what 'name', 'description', and 'privacyStatus' mean without context.

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') and the resource ('a YouTube playlist') with a specific scope ('for the authenticated user'). It distinguishes well from siblings like youtube_add_to_playlist (adding tracks) and youtube_list_playlists (listing existing ones). The verb and resource are unambiguous.

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 no guidance on when to use this tool versus alternatives. There is no mention of when to create a new playlist versus using youtube_add_to_playlist or youtube_save_track. No conditions, prerequisites, or exclusions are given, so an agent has no help selecting this over siblings.

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