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

Annotations already declare readOnlyHint, idempotentHint, non-destructive and a closed world, so the safety profile is covered. The description adds real domain context beyond that: it defines what an 'emergency claim' actually means (an «Akuttvakt» duty backed by a stored source quote, or a clinic self-declaring «Tar imot akuttpasienter»), which an agent cannot get from the annotations.

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?

Front-loaded with the resource and the count dimensions in the first sentence, with the definitional nuance relegated to a second sentence. Both sentences earn their place and there is no filler.

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 and no parameters, the description carries the burden of telling the agent what comes back, and it does so at the level of content (total, per county, and category counts). It does not specify the response shape or field names, which is a minor remaining gap for a no-schema tool.

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 input parameters, so the baseline is 4; there is nothing for the description to disambiguate. It correctly makes no attempt to describe parameters.

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?

The description states a specific verb and resource ('Counts of dentist practices (tannlegeklinikker) in Norway') and enumerates the exact breakdowns it returns: total, per county, Helfo direct billing, chain membership, emergency claim, specialist. That is far more specific than the title. It does not explicitly name how it differs from siblings like tannlege_search, so it stops 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?

Usage is only implied: an agent can infer this is the aggregate/statistics view versus the search or listing siblings, but the description never says when to pick it over tannlege_search or tannlege_akutt. No prerequisites or exclusions are given.

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