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

Annotations already declare readOnlyHint=true and openWorldHint=false, and the description reinforces this with explicit side-effect disclosures: 'sends no email and stores nothing.' The crucial behavioral trait — that a human must complete the action outside the tool — is disclosed, which the annotations alone would not convey. It stops short of covering link expiry or failure modes.

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?

Three short sentences with zero filler. The return value comes first, the required human action second, and the negative side effects last — a well front-loaded structure.

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 explaining the return value and does so ('a link ... with the website and email filled in'). Combined with the side-effect disclaimer, an agent has everything needed to call it and to tell the user what to do next.

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 two parameters are already fully documented as the business website and owner email. The description only adds that both values are prefilled into the form, which is mild extra meaning over the schema baseline.

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 concrete verb and resource: it returns a prefilled link to a free redesign form, with the website and email already populated. That is specific enough that an agent can immediately tell it apart from check_site, live_numbers, and pin_tack, none of which produce a form link.

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 sentence 'The business owner must open it and send the form themselves' implies the handoff workflow, but the description never says when to reach for this tool versus another, nor does it name any alternative or exclusion. Usage is implied rather than stated.

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