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

Annotations already flag destructiveHint=true, idempotentHint=true and readOnlyHint=false, and the description adds genuinely new behavioral context: a mandatory consent-confirmation rule and a two-phase preview/commit protocol, plus a pointer to nextAction in the response envelope. It doesn't say what a rejected or partial mutation looks like, but the confirmation semantics are a real value-add beyond the annotations.

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, front-loaded with the purpose, then the operation list, then the confirmation protocol. The inline pipe-delimited operations list costs almost nothing and keeps the whole definition scannable.

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 11 parameters, seven operations, a nested consents object and an output schema, the description covers the workflow but not the field-to-operation mapping, which is the main way an agent can go wrong here. It also doesn't note that the 'view' operation is a read inside an otherwise destructive tool.

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% and every parameter carries its own description, so the schema carries the load and baseline 3 applies. The description adds the confirm preview/commit meaning, but it never maps which fields belong to which operation, leaving the critical 'each operation accepts only its own fields' constraint to the schema.

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 (change profile or account preference) and enumerates all seven operations, so an agent knows exactly what surface this covers. It doesn't explicitly distinguish itself from mutation siblings like update_item, but the account-scoped framing is clear enough.

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?

Gives concrete procedural guidance: consent changes require conversational confirmation, and mutations follow a preview (confirm: false) then repeat-with-confirm: true pattern. It stops short of per-operation when-to-use notes or when to prefer a sibling tool, which keeps it below a 5.

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