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

Annotations already declare readOnlyHint=false, idempotentHint=false, destructiveHint=false, and openWorldHint=false, covering the safety profile. The description adds one genuinely useful behavioral fact beyond the annotations: only supplied fields are changed and the rest are left untouched. It says nothing about permissions, error handling, or side effects on dependent settings, so this is a solid but not rich addition.

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 sentences, purpose first and the critical patch-semantics note second. For a 92-parameter tool this is remarkably compact, and the parenthetical enumeration earns its place as a scope index rather than padding.

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 annotations present, no output schema, and a fully documented 92-parameter schema, the description gives an agent enough to know what the tool does and how partial updates behave. The trailing "и др." (etc.) is vague and it never maps the tool's relationship to the many specialized settings tools, which is the main residual gap.

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% across 92 parameters, with constraints, enums, and cross-field interactions documented in the schema itself. The description's parenthetical list of settings categories is a redundant index rather than added syntax or format meaning, so the baseline of 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?

States a specific verb ("Обновляет") and resource ("настройки опроса") and enumerates the scope of settings covered (name, language, display, navigation, limits, captcha, theme, scripts, QR code, timers, IP/devices, schedule, analytics, SSO, anonymous responses, category scoring). This lets an agent recognize it as the broad quiz-settings mutation tool. However, it does not distinguish itself from heavily overlapping siblings such as update_quiz_texts, apply_quiz_theme, manage_quiz_qr_code, or manage_quiz_analytics, so sibling differentiation is absent.

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 line "Передаются только те поля, которые нужно изменить; остальные не трогаются" frames the tool as a partial/patch update, which implies when it applies. But there is no explicit when-to-use guidance and no statement of when to prefer the specialized siblings (e.g., apply_quiz_theme, manage_quiz_qr_code, manage_quiz_analytics) over this general tool, leaving usage largely to inference.

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