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

Annotations already declare readOnlyHint=true, so the safety profile is covered; the description adds real value by disclosing the returned fields and clarifying the includeTodayCount behavior. It stops short of noting pagination or auth/rate-limit behavior, but with annotations present this is solid.

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 densely packed sentences, front-loaded with the action and scope, then the return fields, then the API route. Every clause earns its place, especially the field enumeration given the absence of an output schema.

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 read-only list tool with no output schema, the field enumeration and the endpoint hint give the agent enough to call and interpret it correctly. Only minor items like pagination semantics are omitted, and those live in the schema.

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%, so page and limit are fully documented in the schema, and includeTodayCount's meaning is already in the schema description that the text mirrors. The description adds essentially nothing beyond the structured fields, so the baseline 3 applies.

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 the forms the API key's user can access') and immediately enumerates the resource scope. An agent can distinguish it from the singular sibling wufoo_get_form without opening 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?

The phrase 'the forms the API key's user can access' implies the context of use, but there is no explicit when-to-use, when-not-to-use, or named alternative among the many list_* siblings. Usage is inferable but not spelled out.

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