get_playlist_info

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

With no annotations provided, the description carries the full burden of behavioral disclosure but offers minimal information. 'Get YouTube playlist information' implies a read-only operation but doesn't specify what information is returned (metadata, video list, statistics), whether there are rate limits, authentication requirements, or any constraints on the URL format beyond what the schema indicates.

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 maximally concise - a single four-word phrase that communicates the core purpose without any wasted words. It's appropriately sized for a simple retrieval tool and front-loads the essential information immediately.

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 no annotations and no output schema, the description is insufficiently complete. It doesn't indicate what 'playlist information' includes (metadata, video list, statistics), whether there are constraints on URL formats beyond 'YouTube playlist URL', or what the return format looks like. Given the lack of structured documentation elsewhere, the description should provide more 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?

The schema has 100% description coverage with the 'url' parameter clearly documented as 'YouTube playlist URL'. The description doesn't add any parameter semantics beyond what the schema provides, but with complete schema coverage, the baseline score of 3 is appropriate as the schema does the heavy lifting for parameter documentation.

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 'Get YouTube playlist information' clearly states the verb ('Get') and resource ('YouTube playlist information'), making the tool's purpose immediately understandable. However, it doesn't differentiate this tool from its sibling 'get_video_info' or 'get_channel_info' - all are 'get X information' tools, so the distinction isn't explicit.

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. With siblings like 'get_video_info', 'get_channel_info', and 'search_youtube', there's no indication whether this tool is for playlist metadata, content listing, or other specific playlist-related information versus what other tools provide.

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