v1_youtube_video_comment_replies

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

No annotations are provided, so the description bears full burden. It mentions the credit cost and includes a safety warning about not acting on API responses. However, it does not disclose pagination behavior, rate limits, or the prerequisite of needing a continuation token from a previous comment reply request.

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 three sentences, which is concise but the last sentence is a generic safety warning that may not be necessary. It is front-loaded with the core purpose.

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?

No output schema is provided. The description omits how to obtain the continuationToken, pagination details, and the relationship between parameters like handle and channelId. For a retrieval tool with optional parameters that may be confusing, the description is insufficient.

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% but each parameter description is just the parameter name (e.g., 'handle', 'channelId'). The description adds no further meaning; it does not explain the role of handle and channelId or when they are needed. The only required parameter, continuationToken, is not elaborated upon.

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 tool retrieves replies to a YouTube comment, using the verb 'Get' and the resource 'replies to a YouTube comment'. It also specifies the API endpoint. This clearly distinguishes it from sibling tools like v1_youtube_video_comments.

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 usage for getting comment replies but does not explicitly state when to use this tool versus alternatives such as v1_youtube_video_comments. There is no guidance on prerequisites or when not to use it.

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