youtube_create_playlist

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

No annotations provided, so the description carries the full burden. It says the playlist is 'editable' but does not disclose whether authentication is required, whether the playlist is private/public/unlisted by default, what permissions are needed, or any rate limits. Minimal 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?

One short sentence, front-loaded verb+resource. Efficient and readable, though its brevity is partly because it omits useful information.

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 mutation tool with no annotations, no output schema, and 0% parameter description coverage, the description is too sparse. It omits authentication requirements, default visibility, and parameter semantics that an agent needs to invoke it correctly.

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 coverage is 0% and the description does not mention any parameters. The agent cannot learn from the description that 'title' is required, its 150-char limit, or that 'video_ids' accepts up to 50 items. The description fails to compensate for the absent schema descriptions.

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?

States a specific verb+resource ('Create an editable playlist') and even hints at a distinguishing trait ('editable'), but it does not differentiate from sibling tools like youtube_add_videos or youtube_rename_playlist beyond the basic create action. Adequate but thin.

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 when-to-use guidance, no mention of prerequisites (e.g., whether an authenticated cookie must be set via youtube_cookie_set first), no alternatives. The agent must infer usage entirely.

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