list_youtube_channel_playlists

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

With no annotations provided, the description carries full burden. It clearly states it only accesses public playlists, which is a key behavioral trait. The inclusion of quota estimates in the return also adds transparency. No contradictions.

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 well-structured with sections for parameters, returns, and notes. The first sentence front-loads the purpose. It is concise without being verbose.

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 covers the tool's scope (public playlists only), pagination, and return structure. Since an output schema exists, it is not required to detail every field. The mention of quota estimates adds useful context.

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 0%, so the description must compensate. It describes channel_ref's format by referencing resolve_youtube_channel and mentions page_token for pagination. However, next_page_token is present in the schema but not described.

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 it lists public playlists for a channel, with a specific verb ('list') and resource ('playlists'). It distinguishes from siblings like list_youtube_channel_videos by focusing on playlists.

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 mentions the tool lists only public playlists and explicitly notes it does not list private playlists, providing a clear usage constraint. However, it does not direct the agent to alternative tools for private playlists or other scenarios.

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