update_payment_method

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

The description implies mutation but does not disclose side effects, permission requirements, or concurrency behavior. The sync_token parameter hints at optimistic locking, but this is not explained in the text. With no annotations, the description should compensate but does not.

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?

The description is a single, front-loaded sentence with no extraneous words. While concise, it sacrifices necessary detail; a slightly longer description would improve completeness without becoming verbose.

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?

Given the tool's complexity (concurrency control, multiple fields, optional company context), the description is too brief. It does not mention error conditions, return values, or the impact of setting 'active' to false. An output schema is absent, so the description should provide more behavioral context.

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?

The input schema provides descriptions for all parameters (id, sync_token, name, active, company), so the description adds minimal value. It could have explained the role of sync_token or the effect of the 'active' flag, but it does not. Baseline is set to 3 due to high schema coverage.

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 ('payment method') within QuickBooks Online. It is specific enough to distinguish from other update tools for different entities, though it does not list the updatable fields.

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?

No guidance is provided on when to use this tool versus alternatives. Context such as prerequisites (e.g., existing payment method, need for sync token) is omitted, leaving the agent to infer from the parameter requirements.

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