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

Annotations declare idempotentHint=true but not why; the description explains the semantics ('Wiederholungen desselben Entwurfs senden keine zweite E-Mail'). It also discloses the outbound side effects (email to a third party plus an acknowledgment to the user-supplied address) and the consent gate, which annotations cannot express.

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?

Five short sentences, each carrying distinct information: recipient/effect, precondition, change handling, negative scope, idempotency. A 'SENDEN:' prefix front-loads the action, and no sentence is redundant.

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?

No output schema exists, yet the description covers the side effects an agent needs to know (two outward emails, idempotency, no booking) and the consent requirement. Given only two fully documented parameters, nothing material is missing.

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%, and both parameters (user_confirmed, confirmation_token) are already fully documented in the schema, including the token pattern and the prohibition on embedding contact data. The description adds no parameter-level syntax or format detail, so the baseline 3 applies.

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 a specific verb and effect chain: it sends exactly the prepared draft to Mark Olenberg and triggers a receipt confirmation to the given email. It explicitly distinguishes itself from prepare_shooting_inquiry (draft creation) and from booking tools by stating 'Keine Buchung oder Terminreservierung'.

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?

It states a hard precondition ('NUR nach vollständiger Vorschau und ausdrücklicher Zustimmung'), the correct alternative when content changed ('Bei Änderungen zuerst neuen Entwurf erstellen'), and what the tool must not be used for (booking/reservations). Nothing about when to invoke or avoid it is left to inference.

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