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

Adds substantial information beyond the annotations: it requires the settings:write scope, which is off by default and owner-grantable only in the console, and it flags the asymmetric security-notification behavior. It does not explain partial-update semantics (all nine params are optional) or what happens to omitted fields, which is a notable gap for a mutation tool.

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?

Three tight sentences with the core action front-loaded and the authorization caveat and console-only constraint following in priority order. No filler or repetition of the schema.

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 nine-param, all-optional mutation with no output schema and no annotations covering permissions, the description supplies the crucial auth requirement and the key behavioral edge case. It still leaves partial-update semantics and the individual notification switches under-explained.

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?

With only 11% schema description coverage across nine parameters, the description bears most of the burden. It names language, time zone, notifications, and the low-balance threshold (clarying it is USD), but collapses six distinct notification booleans into one vague phrase and never explains that omitted fields may be left unchanged.

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?

Names a specific verb (Change) and resource (account settings) and enumerates concrete targets: console language, time zone, notification switches, and the low-balance alert threshold in USD. It is clearly distinguishable from siblings like everyinfra_account, everyinfra_billing, and everyinfra_webhook_set.

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?

Provides clear context for use, including a real when/when-not rule: security notifications can be enabled here but must be disabled in the console. It does not compare against sibling tools, but the operational constraint effectively scopes the tool's usage.

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