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

Annotations already declare readOnlyHint=true, openWorldHint=false, and destructiveHint=false, so the safety profile is well covered. The description adds useful return-content expectations but does not mention error cases, authorization requirements, or other behavioral aspects. There is no contradiction with 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?

The description is two short sentences, front-loaded in German with a direct English equivalent. There is no filler or unnecessary repetition beyond the bilingual translation, which is appropriate. It is concise and easily scannable.

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 simple getter with read-only annotations and a required ID, the description is adequate at a high level but incomplete: it omits parameter semantics, especially for reasoning, and gives no guidance on when to use this tool over sender_profile_list or sender_profile_validate. It also lacks output structure, though the listed fields partially compensate for the missing output schema.

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 0%, so the description needed to explain both parameters, but it mentions neither profileId nor reasoning. profileId can be inferred as the target profile identifier, but reasoning is left entirely undefined. The description therefore adds no parameter meaning beyond the schema.

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 clearly uses an action verb ('Liefert/Returns'), names the resource ('ein Absenderprofil/sender profile'), and specifies scope ('ein einzelnes/single'), which distinguishes it from sender_profile_list. It also lists the key returned content: mandatory details, bank account, and disclaimer.

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?

No explicit when-to-use or when-not-to-use guidance is provided. The word 'single' and the required profileId parameter imply this tool is for retrieving one profile by ID, but the description does not direct agents away from sender_profile_list or sender_profile_upsert. Usage context is only inferred.

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