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

No annotations are provided, so the description carries the full disclosure burden for a mutation tool. It says nothing about permissions, idempotency, effect on existing replies, or what a failure looks like — only that the thread can be toggled.

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?

A single short sentence with no filler and the action front-loaded. It is efficient, though its brevity reflects under-specification rather than disciplined editing.

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?

The three required parameters are fully documented in the schema and there is no output schema to explain, so the minimum is met. However, for an unannotated state-changing tool, the description should at least state the effect of resolving and any permission requirement.

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 description coverage is 100%, including an explicit explanation of the boolean ('true — close, false — reopen') and where thread_id comes from. The description adds nothing beyond the schema, so the 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?

The description names a specific verb pair and resource ('Закрывает обсуждение или открывает его заново'), and adds the toggle semantic that the title ('Закрыть обсуждение') alone does not convey. It is clear what the tool does, but it never distinguishes itself from siblings such as htmlkin_comments_reply or htmlkin_comments_list.

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?

There is no guidance on when to resolve versus reopen, no prerequisites (e.g., required permissions or thread state), and no mention of alternatives. The agent must infer everything from the parameter names.

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