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

Annotations already declare readOnlyHint=true and destructiveHint=false, so safety is covered. The description does add real context — anonymous access works, and each call consumes one token (호출마다 토큰 1소진) — but the bulk of the text is idempotency boilerplate that is conceptually odd for a read-only lookup and includes the confusing phrase "not available to anonymous taste calls."

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 first two sentences are correctly front-loaded, but roughly two-thirds of the text is idempotency-key mechanics that are disproportionate for a read-only attachment lookup and bury the useful token-cost and auth-free facts at the edges.

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?

With no output schema, the description carries the burden of saying what comes back — an attachment list, a download URL, or bytes — and it never does, nor does it point at files__download for the actual fetch. For a lookup tool whose return shape determines the next call, that omission is material.

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 three required IDs and current_page_no are already fully documented. The description marginally helps by clarifying that the optional key is distinct from a provider-specific idempotency_key, but adds nothing about the ID formats or the page-number recovery semantics 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?

"Get form attachments" states a verb and a resource, and the title confirms it is an attachment lookup for forms. However, "Get" is ambiguous between listing attachment metadata and fetching file bytes, and the description never distinguishes this from the sibling files__download or forms__detail, so an agent cannot resolve the boundary without outside knowledge.

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 only selection guidance is "No credential or login required," which is a precondition, not a when-to-use rule. Nothing says when to call this versus files__download, forms__detail, or forms__list, nor when the idempotency key branch applies beyond the vague "authenticated call."

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