Update account

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

Annotations already cover readOnlyHint=false, idempotentHint=true, and destructiveHint=false, so the description does not need to repeat these. The phrase 'Update the supplied fields' adds a light behavioral note that only specified fields are changed, but there is no mention of validation, side effects, or required permissions. No contradiction with 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?

A single sentence that is direct and front-loaded with the action and resource. No filler or redundant information, making it highly concise and easy to scan.

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?

The presence of an output schema and annotations lightens the burden, but the low parameter coverage means an agent may not know what each field does or whether they are all optional. The description does not explain update semantics (e.g., partial vs. full replacement) or any constraints, leaving gaps for a tool with 8 parameters.

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 only 13% (only account_id has a description), leaving seven other parameters undocumented. The description's 'supplied fields' gives a high-level hint but does not compensate for the lack of parameter-level meaning or clarify how values like balance or account_type are interpreted.

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?

The description clearly states the action (update) and the resource (existing Monarch account) with a specific verb and object. It distinguishes itself from sibling tools by focusing on updating supplied fields rather than retrieval or creation.

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 description implies the tool is for modifying existing accounts, but it does not explicitly state when to use it versus alternatives like create_manual_account or delete_account. No exclusions or conditions are provided, so usage guidance is mostly implied.

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