get_germany_wholesale_price

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

The description discloses the data source (SMARD/Bundesnetzagentur), states that no registration is needed (indicating open access), and lists the returned fields (price, time period, source). For a simple read-only tool with no parameters, this provides sufficient behavioral transparency beyond the name.

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 extremely concise: three short lines covering output, access, and return fields. Every sentence serves a purpose, and the structure is well-organized with a clear separation of concerns.

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?

Given the tool's simplicity (no parameters, no output schema), the description provides essential information: what is returned, the unit, and the source. It could specify the exact time resolution (e.g., current hour), but it is largely complete for a straightforward data retrieval tool.

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?

The tool has no parameters, and the schema coverage is 100% (trivially). The description adds no parameter-specific information because none exist. The baseline score of 3 is appropriate as the description correctly confirms the tool requires no input.

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 states it retrieves the current wholesale electricity price for Germany in EUR/MWh from SMARD/Bundesnetzagentur. It uses a specific verb ('get'), a specific resource ('wholesale price'), and the domain (Germany) distinguishes it from sibling tools that deal with carbon intensity, power mix, or EU-wide prices.

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?

The description notes that no registration is required, which is a practical usage hint. While it does not explicitly compare with siblings or list exclusions, the tool's specific purpose (German wholesale price) is clearly differentiated from the carbon and power mix tools listed as siblings.

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