reply_to_comment

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

No annotations are provided, and the description only states it 'creates a threaded reply' without disclosing behavioral traits such as authentication requirements, rate limits, or whether it appends to a thread. The burden is high due to missing annotations, and the description falls short.

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 extremely concise, with a single-purpose statement followed by clear parameter explanations. No extraneous information is included; every sentence is necessary.

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 and the presence of an output schema, the description covers the essential purpose and parameters. However, it lacks context on what the tool returns (e.g., success status or created reply object) and any constraints (e.g., nesting depth). It is 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?

The description fully explains each parameter beyond the schema: parent_id is 'ID of the comment to reply to', text is 'Reply text', author is 'Author name'. With 0% schema description coverage, this adds significant value, though the default for author is only in the schema.

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 ('Reply to an existing comment') and the outcome ('creates a threaded reply'). It effectively distinguishes from the sibling 'add_comment' tool by specifying it is a threaded reply to an existing comment.

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 does not provide explicit guidance on when to use this tool versus alternatives. However, the sibling tools (e.g., 'add_comment') imply that this tool is for replying rather than top-level commenting, but no direct comparison or usage conditions are stated.

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