search_videos

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

No annotations are provided, so the description carries the full burden. It does not disclose result ordering, pagination, quota/rate-limit behavior, or any auth requirements for a YouTube search call. It only restates the limit default already present in the schema.

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?

Short, front-loaded, and free of filler. The Args block is somewhat redundant with the schema but serves as a readable parameter summary, keeping it efficient overall.

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?

An output schema exists, so return values need not be explained. But for a search tool with 0% schema coverage, missing pagination, ordering, and query-syntax context leaves the definition only minimally adequate.

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, and it does document both parameters (query as search keywords, limit as max results with default 20). However, 'Search keywords' adds little beyond the parameter name, and there is no mention of query syntax, filters, or operators that would matter for a search tool.

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 and resource ('Search YouTube for videos'), so the agent knows exactly what the tool does. However, it does not differentiate from siblings like get_video_info, list_channel_videos, or get_top_videos, which also surface video data.

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?

There is no guidance on when to search versus using list_channel_videos, get_top_videos, or get_video_info. No prerequisites, no exclusions, no alternative routing is provided.

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