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

Annotations already declare readOnlyHint=false, destructiveHint=false and openWorldHint=false, and the description consistently reinforces that with '순수 읽기 전용이 아닙니다'. It adds material context the annotations do not carry: each call consumes a token, request processing creates an XBOSS job, the result is stored, and institution data changes follow per-tool confirmation procedures. The trailing sentence about confirmation procedures is somewhat generic boilerplate, which keeps it from a 5.

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 prerequisite is correctly front-loaded, but the middle section is dense and repetitive, and the phrase 'anonymous taste calls' reads as a translation artifact that will confuse an agent about what 'taste' means here. The final Korean sentences are generic policy boilerplate rather than tool-specific information.

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 two-optional-parameter initialization step with no output schema, the description covers the key concerns: authentication prerequisite, side effects (job creation, stored results), cost per call, and idempotency handling. It stops short of saying what the initialization returns or which sibling step follows, but nothing critical for invoking it is missing.

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 both parameters are already documented, setting a baseline of 3. The description earns above baseline by explaining the idempotency_key lifecycle in detail: generate and save before the first request, reuse only to recover a lost response with identical arguments, use a new key for a new execution, and do not confuse it with a provider-specific idempotency_key. It also ties account_link_id to the login session, which the schema does not.

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?

States a specific verb and resource: 'Initialize payroll amount change application' (보수월액 변경 신청 초기화), so an agent knows this is the setup step for a payroll amount-change workflow. It does not name or distinguish itself from the closely related sibling fourinsure__b1__payroll__amount_change__draft_validate, so the agent must infer the ordering.

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 prerequisite is explicit and actionable: 'REQUIRES prior fourinsure__session__login call with same account_link_id.' That is genuine usage guidance. However, there is no statement of when to prefer this over the sibling draft_validate/submit steps or what to do after initialization, so the workflow position is only implied by the title.

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