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

Annotations already declare readOnlyHint=false, destructiveHint=false, idempotentHint=false and openWorldHint=false, so the safety profile is covered. The description adds only that the item lands in the user's own catalog; it does not disclose what happens on a duplicate name, whether required-permission checks apply, or that the call is non-idempotent and can create repeats.

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 front-loaded sentence with no filler; the resource, the action and the domain synonym all appear immediately. Nothing could be trimmed without losing meaning.

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 six-parameter, non-idempotent create operation with no output schema, the definition is thin: it says nothing about duplicate handling, what identifier is returned, or how category values are chosen. Annotations and full schema coverage compensate for the safety and parameter gaps, so it is workable but not complete.

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 every parameter including name, unit, costPrice, unitPrice and category is already documented in the schema. The description only echoes 'price and unit' and adds no format, currency, rounding or required-field guidance beyond that.

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 and resource: 'Adds a new service or product ... to the user's service catalog (Leistungskatalog).' The word 'new' implicitly contrasts with updateCatalogItem, and the German domain term helps disambiguate the concept, but the description never names the sibling it differs from.

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: create an item, presumably when it does not yet exist. There is no explicit statement about when to use this versus updateCatalogItem, no note that re-calling with an existing name may create a duplicate rather than update, and no prerequisites mentioned.

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