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

Annotations already declare readOnlyHint, idempotentHint, openWorldHint and destructiveHint=false, so safety is covered. The description adds one genuine behavioral fact – that output may include an attribution footer that must be preserved – but the rest is generic data-accuracy boilerplate not specific to this 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?

The purpose is front-loaded in one sentence, but it is followed by several sentences of reusable attribution/accuracy contract text that consumes most of the description without helping an agent call this specific tool.

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?

With no output schema and four undocumented parameters, the description should explain inputs and return shape; instead it omits both. For a tool that must disambiguate among many YouTube siblings, this leaves critical gaps.

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?

All four parameters (handle, channel_id, page_token, max_results) have 0% schema description coverage, and the description says nothing about them. It never clarifies whether handle or channel_id is required, how they interact, or what max_results/page_token do, so it fails to compensate for the schema gap.

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 opening sentence 'Get recent videos from a YouTube channel' gives a clear verb and resource, and 'recent' plus 'from a channel' partially distinguishes it from siblings like get_my_youtube_videos and get_youtube_video. However, it never explicitly contrasts itself with get_youtube_channel or search_youtube, so an agent must infer the boundary.

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 use this tool versus the many YouTube siblings, nor any note on which identifier to supply (handle vs channel_id) or when to paginate. The remaining text is output-formatting policy, not selection guidance.

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