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

readOnlyHint already covers the safety profile, so the description's added value is pagination behavior: it discloses offset pagination and that the response carries totalResponses and pageCount. It also hints at defaults (status finished, sort asc) that are only implicit in the schema. It stops short of noting rate limits, max offset behavior, or error conditions.

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 plus an endpoint reference, front-loaded with the verb/resource and scope before the filter and pagination details. Every clause carries information an agent needs; nothing is padding.

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 does the work of sketching the returned payload (answers, calculations, URL parameters, scheduling, payments, quiz score, login email) and the pagination counters, which is more than most tools in this family. It is still silent on failure modes and how includeEditLink/includePreview alter the response shape.

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% and each of the 10 parameters is individually documented, so the baseline is 3. The description's mention of 'date range, status or free-text search' only restates three of those parameters and adds no syntax, format, or default detail 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?

States a specific verb and resource ('List one page of a form's submissions') plus the payload scope (answers, calculations, payments, quiz score, etc.) and the underlying endpoint. The 'one page' framing distinguishes it from fillout_count_submissions, fillout_export_submissions, and fillout_get_submission without needing either schema.

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?

It lists the available filters (date range, status, free-text search) and explains offset pagination, which implies the listing use case, but it never says when to prefer this over fillout_export_submissions, fillout_count_submissions, or fillout_get_submission. Usage is implied rather than routed.

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