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

Annotations already cover the safety profile (readOnly, idempotent, non-destructive, closed-world), so the description's job is to add content context — which it does by scoping the payload and noting compliance status distinguishes "what is and is not claimed," a genuinely useful honesty signal. It stops short of stating the response shape, but with zero params and no side effects there is little else an agent needs to know before calling.

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?

A single dense sentence with no filler, packing all five returned data categories into one line. It is slightly list-like and lacks a leading verb, but nothing is wasted and the most important scoping (legal entity, hosting, compliance) comes first.

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 parameters and no output schema, the description must carry the entire burden of explaining what comes back — and it does, naming each returned field group including the external links. An agent knows precisely what payload to expect before invoking it.

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?

The tool takes no parameters, so the baseline of 4 applies; there is no parameter semantics for the description to clarify or omit.

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 enumerates exactly what the tool surfaces — legal entity, VAT ID, hosting region, compliance status, and links to terms/privacy/imprint — which for a zero-parameter getter effectively states its purpose. It never uses an explicit verb ("returns") and doesn't name a sibling, but the subject matter alone separates it cleanly from the pricing/quote tools.

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?

There is no when-to-use guidance, no mention of alternatives, and no trigger condition such as "use when a customer asks about data residency or vendor compliance." The agent must infer the usage scenario entirely from the content list.

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