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

Annotations already establish that this is a read-only, idempotent, non-destructive, closed-world lookup. The description adds useful scope by listing the returned facts and the order link, but it does not explain data freshness, retrieval behavior, or response format.

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 description is a single front-loaded sentence with no filler. It packs the key content areas into a compact list and immediately identifies the source site.

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 parameterless information lookup with annotations covering safety and no output schema, the description is largely complete: it outlines what the tool returns and where it comes from. It could be slightly stronger by stating whether the order link is returned as data or is an action path, but no major gap remains.

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 schema has no parameter semantics to document. The baseline for a parameterless tool is 4; the description does not need to compensate for missing parameter detail.

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 names the exact resource and enumerates its contents: Preis, Seitenumfang, Lieferform, Sprachen, Bezahlarten, plus an order link for birthdaypaper.com. That makes the tool's purpose clear, though there is no explicit verb and no direct differentiation from the sibling tool was_geschah_am.

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 by the content list: an agent should call this when it needs pricing or service details for the birthday newspaper. There is no explicit when-to-use or when-not-to-use guidance, but given zero parameters and an unrelated sibling, the implied scope is reasonably clear.

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