qbo_payment_methods_update

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

With no annotations provided, the description must fully disclose behavior. It mentions sparse-update and the need for SyncToken, but does not cover concurrency issues (stale SyncToken), permission requirements, or what happens to fields not provided (they remain unchanged). The description is adequate but lacks depth 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?

The description is extremely concise, consisting of two short sentences that front-load the key information (sparse-update, only provided fields, required parameters). No extraneous words.

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 simplicity (no output schema, no nested objects), the description covers the essential behavior: it updates only provided fields and requires certain fields. However, it could mention that fetching the record first is necessary to get the SyncToken, and that fields not provided remain unchanged. Still, it is mostly complete for a basic update 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 coverage is 100%, so baseline is 3, but the description contains a minor inconsistency: it says 'Id and SyncToken are required' while the schema marks Name as required as well. The description adds little value beyond the schema descriptions and does not compensate for the mismatch.

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 tool performs a sparse-update on an existing PaymentMethod record, specifying that only provided fields are changed and that Id and SyncToken are required. This clearly distinguishes it from other payment method tools like create, get, list, and search.

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 that before using this tool, one should fetch the record to obtain the SyncToken, but it does not explicitly state when to use this tool versus alternatives like create or search. There is no comparison to sibling tools or exclusion criteria, providing only minimal usage context.

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