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

The annotations already declare readOnlyHint=true and openWorldHint=false, so the safety profile is covered before the description is read. The description adds genuine value by naming what is returned — mandatory categories with the reason they cannot be disabled, channel selection (Telegram, MAX, or both), quiet hours and timezone — which effectively substitutes for the missing output schema. It still says nothing about auth requirements, whose notifications are shown, or whether it reflects bot-level or per-chat settings.

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 front-loaded sentence with a clean enumerated list of what is displayed; every clause carries content. The nesting of parenthetical aside about mandatory categories is slightly dense but not wasteful.

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?

With no output schema and no parameters, the description must carry the return-value story, and it does so by enumerating the settings surfaced (categories, mandatory reasons, channels, quiet hours, timezone). It is nearly complete for a simple read tool; only the scope of whose settings are shown is left implicit.

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 tool takes zero parameters, so the baseline of 4 applies; there is no parameter meaning the description could add. It does not confuse the agent by implying any required input, which is the main risk for a no-arg tool.

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 states a specific verb of display ('Показывает') and a specific resource — what the bot sends to a person and through which channels — and enumerates the concrete contents (notification categories, mandatory flags with reasons, channel choice, quiet hours, timezone). It is not merely a restatement of the name. It stops short of naming a counterpart settings tool, but no such sibling exists in the provided list, so differentiation is effectively handled.

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?

Usage is only implied: it reads as a read-only inspection of notification preferences, and the readOnlyHint annotation reinforces that. There is no explicit statement of when to call it versus other tools (e.g., chatbot_show or route_show), nor any prerequisites or exclusions. Adequate but leaves the agent to infer context.

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