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

With no annotations provided, the description carries the burden of behavioral disclosure. It adds context about the returned data (cancellation address, fax, typical notice period), but does not disclose any other behavior such as error handling, permissions, or response format. For a simple read operation this is adequate but not rich.

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 short sentence that conveys essence without waste. Every word earns its place, and the parenthetical list quickly communicates what the provider object contains.

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 get-by-ID tool with no output schema and full parameter schema coverage, the description is minimally sufficient. It lacks information about response shape, error behavior, or how country is used, but these are less critical given the tool's simplicity. The description is complete enough for an agent to understand the basic function but not comprehensive.

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% for both parameters (id, country), so the schema already documents them. The description mentions 'per id', which aligns with the required id parameter, but it does not elaborate on the optional country parameter or add any syntax/format details beyond the schema. Baseline 3 is appropriate.

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 'Ein Anbieter per id' clearly indicates that the tool retrieves a provider by ID, and the parenthetical mention of specific fields (Kündigungsadresse, Fax, typische Frist) adds useful detail. It distinguishes from list_providers by implying a single-object fetch, though the verb 'get' is only implicit in the tool name.

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 guidance is given on when to use this tool versus alternatives. It does not mention list_providers or other sibling tools, nor any prerequisites or typical use cases. The description provides no context for decision-making.

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