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

Annotations already cover the safety profile (readOnlyHint, idempotentHint, destructiveHint=false, openWorldHint=false), so the description is not required to carry that burden, and it does not contradict them despite the 'fill' framing. Beyond the annotations it only contributes value-format hints such as YYYYMMDDhhmm and 11자리, and says nothing about what happens with unknown or missing field keys, whether output is a document or a confirmation, or how errors surface.

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 definition is short and front-loads the fill_form equivalence, which is good. However, the remainder is a single dense comma-and-pipe-separated run-on list with no grouping or delimiters between related keys, forcing the agent to parse 30+ tokens from one unstructured string.

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 form-filling tool whose only parameter is a free-form key/value bag, the field inventory is the minimum needed to call it, and it is present. What is missing is requiredness per field, clarification of the ambiguous pipe/enum tokens, and any statement of what the call produces — with no output schema, that last point is not covered elsewhere.

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 input schema's single 'values' object exposes no property names at all (only additionalProperties string|boolean), so the enumerated field names — name, rrn, accident_datetime, workplace_no, narrative, applicant_name, etc. — are the only source of parameter meaning and are essential. Format hints for accident_datetime and workplace_no add real value, but the pipe notation (claim_kind_accident|disease|commute, police_yes|no, witness_name|phone|relation) is ambiguous about whether it denotes key-value choices or separate keys, and no field is described semantically or marked required.

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 defers the actual purpose to a sibling: it only says the tool is equivalent to fill_form(form_id='F_YOYANG_APPLY'), and the reader must consult the title to learn that this is the 요양급여신청서 (workers' compensation medical-care application) form. The field-name list implies form-filling but never states the operation as a verb+resource in its own text. The form_id reference does let an agent distinguish it from fill_form's other form variants, which keeps it above a tautology.

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?

There is no explicit when-to-use or when-not-to-use guidance, no mention of prerequisites, and no comparison against the sibling tools fill_form, list_required_forms, or get_form_catalog. The equivalence to fill_form implies the selection rule 'use this for form F_YOYANG_APPLY, use fill_form for others,' but that is inference rather than stated guidance.

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