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

Annotations already declare destructiveHint=true, readOnlyHint=false, openWorldHint=false, and idempotentHint=false. The description adds no behavioral detail beyond this: it never says that delete_review destroys data, that redeem_voucher is irreversible, or which actions side-effect outside the account, even though listing those actions implies varied risk.

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?

Front-loads the purpose reasonably, but the second sentence re-lists all eleven enum values that are already fully specified in the schema, creating redundancy. The first sentence also paraphrases many of the same actions, so the text carries duplication without new information.

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 ten-action dispatcher with a nested params object and no output schema, the description offers only the action names and a pointer to 'help'. It does not describe what any individual action does organizationally or what it returns, leaving the agent to rely entirely on the help call.

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 coverage is 50%, with the nested 'params' object essentially undocumented. The description compensates partially by directing the agent to the 'help' action for per-action fields, but it repeats a hint already present in the schema's params description and adds no syntax or per-action field detail.

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 (Change) plus the resource (account settings) and enumerates the ten concrete actions plus the help action, so the agent knows exactly what this dispatcher covers. It is distinguishable from update_profile and update_auto_apply, though bundling unrelated operations like redeem_voucher and resend_verification_email under 'settings' is a slight mismatch of scope.

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 one useful usage instruction — call action 'help' to discover each action's fields — but gives no guidance on when to choose this tool over siblings such as update_profile or manage_membership. Usage is only implied by the action list.

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