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

The annotations already declare readOnlyHint=true, idempotentHint=true and destructiveHint=false, so 'Read-only' in the description merely restates structured data rather than adding context. With annotations covering the safety profile, the description contributes nothing new (no auth scope, no pagination behavior, no note about auto-fetching all pages).

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 short sentences, front-loaded with the core action, no filler or redundancy beyond the arguably unnecessary 'Read-only' tag. Nothing extraneous remains.

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?

There is no output schema, and the description does not describe return shape or how answers relate to their parent responses. The schema does cover pagination behavior, so the gaps are moderate rather than severe, but an agent gets no guidance on result structure or filtering intent.

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% across all four parameters, so the schema already explains page, per_page, item_key and response_id including auto-pagination and max values. The description adds no syntax or meaning beyond the schema, so the baseline 3 is appropriate.

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 ('List') with a precise resource ('per-question answer values within form responses'), which distinguishes it from get_form_response_answer (singular) and list_form_responses (responses, not answers). However, it does not explicitly name those siblings to steer selection.

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 when-to-use guidance, no mention of when to prefer this over list_form_responses or get_form_response_answer, and no mention of the filtering use case (e.g., scoping by response_id or item_key) even though the schema supports it.

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