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

Annotations already declare readOnlyHint=true and destructiveHint=false, and the description adds a behavioral precondition (prior login with the same account_link_id) plus scoping to a single page from an existing search context. It does not describe runtime errors or invalid-context behavior, but that is a minor gap given the annotations cover safety.

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 wasted words. The critical login prerequisite is front-loaded in the first sentence, and the second sentence delivers the operation and its data source. Perfectly concise.

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?

For a simple paginated fetch within a defined workflow, the description conveys the essential requirements (login, prior search context, single page). The lack of an output schema means the return structure is not described, but this is a minor gap for a page-fetch operation whose shape is likely defined by the search context and sibling result 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 description coverage is 100%, so the baseline is 3; the tool description adds value by tying account_link_id to the same one used in the prior login and by reinforcing that search_context must come from a prior init/search call. This is meaningful semantic context beyond the schema's generic field descriptions.

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 uses a specific verb ('Fetch') and names the exact resource ('one KB Biz Card approvals page'), and the qualifier 'from a prior search context' clearly separates it from the search/init/result siblings in the same domain. The Korean title reinforces the approvals-domain scope, making this a unambiguous page-fetch tool.

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 explicitly states a hard prerequisite ('REQUIRES prior kb_biz_card__session__login call with same account_link_id') and implies the tool is a follow-up to a search. However, it never names alternative tools (e.g., kb_biz_card__approvals__search) or says when not to use this one, so the guidance is clear but not fully comparative.

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