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

Annotations already flag destructiveHint=true, idempotentHint=false, and openWorldHint=true, so safety is partly covered. The description adds nothing beyond that: it never says whether omitted parameters are preserved or reset, whether changing webhook_url invalidates an existing token, or that delays/webhooks affect live message delivery. For a destructive 10-parameter mutation, that silence is a real gap.

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 the verb and resource front-loaded — no padding. The trade-off is that the brevity comes from hedging ('etc.') rather than from precision.

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 10 parameters, destructive semantics, and no output schema, the description should explain partial-update behavior and consequences of toggling webhooks, and it should not cite a nonexistent 'proxy' setting. What remains is a bare label, insufficient for an agent to call this safely.

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%, so every parameter is already documented and the baseline is 3. The description's only contribution is naming 'webhooks' as a category, and it introduces 'proxy' which has no corresponding parameter, so it does not meaningfully enrich semantics.

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 ('Update instance settings') and names example setting groups, which separates it from the read-only siblings whatsapp_get_settings and whatsapp_get_wa_settings. However, the parenthetical cites 'proxy', which is not among the schema's properties, so the scope sketch is partly inaccurate.

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 statement of when to use this versus the sibling read tools or when not to use it; the pairing with get_settings must be inferred from the tool names alone. No prerequisites (instance must be connected) or side-effect warnings are given.

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