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

Annotations already declare readOnlyHint=true, destructiveHint=false and openWorldHint=true, so the safety profile is covered. The description adds only the endpoint path and the shape of returned fields; it says nothing about pagination limits or result volume beyond what the schema's page/page_size text already conveys. A 3 is appropriate given annotations carry the behavioral load.

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 tight sentences with no filler, leading with the resource and fields before the endpoint. Every clause earns its place.

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, but the description compensates by listing the returned fields, and pagination is covered by the schema's next_page hint. For a simple read-only list tool this is nearly complete; only sort/search interaction nuance is left implicit.

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% and every parameter (page, search, order_by, page_size, sort_order) is documented in-schema, so the baseline is 3. The description adds no parameter semantics of its own.

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 signup forms') and even enumerates the returned fields (id, name, date, lists they feed), which cleanly separates it from the singular sibling get_signup_form. It does not, however, explicitly name or contrast any sibling, so it falls short of a 5.

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 'List' verb and the GET /SignupForm/ endpoint imply a read/scoping use case, but the description never states when to prefer this over get_signup_form or list_lists, and offers no exclusions or prerequisites. Usage is only inferable.

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