Create YouTube Playlist

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

With no annotations provided, the description carries the burden of disclosing safety and side effects. It mentions ownership by the authenticated channel and the default private status, which adds context. However, it does not discuss authentication requirements, potential errors, or that creation is a write operation beyond the verb 'creates'.

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 two short sentences with no filler. It gets straight to the point and earns its length.

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 simple create tool, the description covers core purpose and default behavior, but it lacks return value information (which is important given no output schema), error cases, and explicit guidance on when to use this tool versus siblings. It is minimally viable but has clear gaps.

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 input schema has three parameters (title, description, privacy_status) and schema description coverage is 0%. The description does not explain any parameter semantics, constraints, or relationships. Even the 'default to private' statement merely repeats the schema's default value, adding no new meaning.

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 states a specific action ('Creates') with a clear resource ('a playlist') and ownership context ('owned by the authenticated channel'). It also notes the default privacy setting, which helps differentiate from update/list siblings. This is a clear and specific purpose.

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 implies usage when creating a new playlist, but does not explicitly contrast with alternatives like youtube_update_playlist or mention when not to use it. No exclusions or references to sibling tools are provided.

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