youtube_get_channel_videos

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

Despite annotations already covering read-only, idempotent, and non-destructive, the description adds keyless access, normalized return structure, and empty-result warning behavior. This is meaningful context beyond the structured annotations.

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?

Three concise sentences front-load the core action, then usage guidance, then behavioral details. No redundant words, every sentence adds value.

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 simple list tool with no output schema, the description covers purpose, usage boundaries, return composition, and edge-case behavior. This is complete enough for an agent to invoke confidently.

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 coverage is 100% with both parameters described. The description repeats channel_url (@handle) and limit (max count) without adding new semantic details beyond the schema. Baseline 3 applies.

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?

Clearly states it lists recent uploads from a channel URL or @handle, with a specific verb and resource. Explicitly distinguishes from keyword search and channel metadata, aligning with sibling tools like youtube_search and youtube_get_channel_info.

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?

Provides explicit when-to-use guidance: 'Use this for channel browsing, not keyword search or channel metadata.' This tells the agent the intended context and excludes common alternatives, making selection straightforward.

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