Get Playlist Items

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

Annotations already indicate read-only and idempotent operations, so the agent knows this is a safe, repeatable read. The description adds minimal behavioral context beyond this, such as specifying it retrieves 'videos' (not other items) but doesn't detail pagination, rate limits, or response format. With annotations covering core safety, a baseline 3 is appropriate for the limited added value.

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, efficient sentence that directly states the tool's function without unnecessary words. It's front-loaded with the core action and resource, making it easy to parse quickly.

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?

Given the tool's low complexity (simple read operation), 100% schema coverage, and annotations providing safety hints, the description is adequate but minimal. It lacks output details (no output schema) and doesn't address sibling tool differentiation, which could help in more complex scenarios. A score of 3 reflects a basic but sufficient level of completeness for this 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 100%, with clear documentation for both parameters (playlistId and maxResults). The description doesn't add any semantic details beyond what the schema provides, such as examples of playlist IDs or default values for maxResults. Baseline 3 is correct when the schema fully documents parameters.

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 ('Get') and resource ('videos in a YouTube playlist'), making the purpose immediately understandable. However, it doesn't explicitly differentiate from sibling tools like 'playlists_getPlaylist' (which likely gets playlist metadata) or 'channels_listVideos' (which might list videos from a channel rather than a playlist), missing full sibling distinction.

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. It doesn't mention when to choose this over 'playlists_getPlaylist' for items vs. metadata, or 'channels_listVideos' for channel-based video listings, leaving usage context implied rather than explicit.

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