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

With no annotations, the description carries the whole burden. It does add real behavioral context beyond the name: it acts under the API key owner's identity and resolve:true has the side effect of closing the discussion. It omits permissions required, error cases (unknown thread, oversized body), and what is returned.

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?

Two short sentences, front-loaded with the action and identity, and the optional destructive-ish flag called out second. No filler.

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 write tool with no annotations and no output schema, the description is serviceable but thin: it says nothing about the return value (presumably the created comment) or failure behavior, which an agent needs to chain follow-up calls.

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%, so all four parameters, including the 4000-character body limit and the cross-reference to htmlkin_comments_list for thread_id, are already documented in the schema. The description only restates the resolve flag's effect, adding little beyond structured data.

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?

States a specific verb and resource ('Отвечает в обсуждении') plus the acting identity ('от имени владельца ключа'), so an agent knows exactly what is created. It never names the near-sibling htmlkin_comments_resolve, so the reader must infer the split between 'reply' and 'resolve' from the flag sentence.

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 presence of a 'resolve' shortcut implies the reply-then-close workflow, but there is no explicit when-to-use framing, no 'use htmlkin_comments_resolve if you only want to close', and no stated preconditions such as needing an existing thread_id.

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