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

Annotations already indicate the operation is neither read-only nor destructive. The description adds auth-related context by requiring a prior login with the same account_link_id, but it does not disclose side effects such as whether repeated init calls reset state or how the initialized inquiry behaves.

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?

Two sentences with no filler. The prerequisite is front-loaded in uppercase, and the core action is stated clearly and directly.

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 login prerequisite is helpful, but the description does not explain where this init step fits in the approvals flow or what an agent should call next (e.g., approvals page/result/search). With no output schema, the lack of follow-up guidance leaves a noticeable gap for an agent executing the full sequence.

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 date formats and account_link_id behavior are already documented. The description adds a meaningful constraint: account_link_id must match the one used in the preceding login call, which goes beyond 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?

The description states a specific verb and resource: 'Initialize KB Biz Card approvals inquiry for a date range.' This distinguishes it from the approvals page/result/search siblings, though 'initialize' itself is not elaborated beyond being a setup action.

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 clearly states the prerequisite of a prior kb_biz_card__session__login call with the same account_link_id. However, it does not explicitly say when to use this tool versus the sibling approvals search/page/result tools, leaving the sequential relationship to be inferred from the name 'init'.

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