Get Authenticated YouTube Channel

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 indicates a read operation ('Gets') and references the 'local OAuth session,' but does not disclose potential errors (e.g., missing session), return format, or any side effects. For a simple getter, this is minimally adequate but lacks depth.

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, concise sentence that immediately states the action and scope. Every word is purposeful, with no redundant or ambiguous phrasing. It is perfectly front-loaded and appropriately sized.

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 simplicity (no parameters, no output schema), the description is nearly complete. It successfully conveys the core functionality, though a note about behavior when no session exists or a pointer to youtube_get_channel for non-authenticated channels would fully round out the context. Overall, it is sufficiently complete for a basic getter.

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?

With zero parameters and schema description coverage at 100%, the baseline is 4. The description adds no parameter-specific details, but also requires none, as the input schema is empty. It appropriately avoids unnecessary elaboration.

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 ('Gets') and the specific resource ('the YouTube channel attached to the local OAuth session'). This distinguishes it from sibling tools like youtube_get_channel by specifying the authenticated context, making the purpose unambiguous.

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 implies when to use this tool (when the caller needs the channel associated with the current OAuth session), but provides no explicit guidance on when not to use it or alternatives such as youtube_get_channel. Usage context is inferred rather than directly stated.

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