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

Annotations already declare readOnly/idempotent/non-destructive and a closed world; the description reinforces the closed-world limit with 'Nur Seiten von abmahnexperte.de' and states the output is plain text. It adds a meaningful boundary the agent would otherwise miss: this is general information, not a legal assessment ('Einschätzen kann nur der Anwalt'). Invalid-URL or fetch-failure behavior is left unstated, so not a 5.

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?

One dense paragraph that front-loads the use case, then the read behavior, then exclusions — a sensible order with no filler. It is on the long side for a single-parameter tool, but each clause (use case, source of URLs, domain limit, exclusions) carries distinct information.

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 one-parameter read tool with no output schema, the description covers what it returns (page text), where the input comes from, host restriction, and the boundary against legal advice — everything needed to invoke it correctly. Annotations cover the safety profile.

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 coverage is 100% and includes an example URL, so the schema carries the syntax. The description still adds value by telling the agent where URLs come from ('die Adressen nennt abmahnung_ratgeber_uebersicht') and restricting them to the abmahnexperte.de host, which is not encoded in 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?

Names a specific verb and resource ('Liest eine Seite von abmahnexperte.de als Text') and scopes it to details on Abmahnwellen, firms, or topics. It also explicitly separates itself from the sibling that supplies the addresses (abmahnung_ratgeber_uebersicht), so an agent can route correctly without opening a schema.

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?

Gives both sides of the routing decision: use it when someone wants specifics on a Abmahnwelle/firm/topic or the current overview, and an explicit when-NOT list (general legal questions without such a letter, payment reminders/collections, employer or landlord warnings, criminal matters, legal assessment). The alternative source for URLs is named directly.

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