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

Annotations already declare readOnlyHint, idempotentHint, non-destructive and closed-world, so the safety profile is covered. The description adds that it returns both a contact form link and a free-consultation booking link, plus that it applies to advisory questions, but discloses nothing about the static nature of the data or how often contact details change.

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?

The content is front-loaded and short in substance, but it is duplicated verbatim across English and Danish, effectively doubling length without adding information, and the trailing 'Ingen input' is pure redundancy against the empty 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?

This is a simple, no-input, read-only lookup with an output schema, so the description need not explain return values; it covers what kinds of contact information come back. Only the lack of explicit sibling routing keeps it below full completeness.

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?

There are zero parameters, so the baseline is 4; 'Ingen input' merely restates what the empty schema already shows and adds no further semantics, but no gap exists to compensate for.

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+resource: returns Gulvbuddy's phone number, email, opening hours and contact/booking links. It implicitly distinguishes itself from start_booking by noting it only supplies the link to book a free phone consultation, though it does not explicitly name that sibling.

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?

Usage is implied (call this when a user wants contact details or a consultation booking link, including for advisory questions), but there is no explicit when-to-use/when-not guidance nor a named alternative such as start_booking for actually completing a booking.

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