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

The annotations already declare readOnlyHint=true and destructiveHint=false, so the safety profile is covered. The description adds a behavioral requirement (prior login), which is important context beyond the annotations. It does not disclose other behaviors like pagination limits or result structure, but given the annotation coverage, the bar is met.

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 two sentences with zero filler. The most critical operational constraint (the login prerequisite) is front-loaded, and the action is stated plainly.

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 description omits what 'result rows' actually look like (there is no output schema) and does not explain the relationship to the init/search/page flow beyond the login prerequisite. For a 6-parameter tool with no output schema, more context about return format or pagination would help an agent use it correctly.

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 schema provides 100% coverage of all six parameters, each with descriptive text. The description adds no extra parameter-level context, so the baseline of 3 applies; the schema does the heavy lifting.

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 ('Collect') and the resource ('KB Biz Card payments result rows'), and the naming convention distinguishes it from the approvals and purchases result tools. However, it does not explicitly contrast with the sibling __search or __page tools, relying on the tool name to carry that distinction.

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 provides a critical prerequisite (prior session login with same account_link_id), which is valuable operational guidance. However, it does not state when to use this tool versus the payments __search or __page alternatives, nor does it outline the typical multi-step flow (init → search → page → result).

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