knmi_latest_files

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

Annotations already declare readOnlyHint: true and openWorldHint: true, establishing the tool as a safe read operation. The description adds the requirement for an API key, which is behavioral context beyond the annotations. However, no other behavioral traits (rate limits, data freshness, error handling) are disclosed.

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, each serving a purpose: stating the function and noting the API key requirement. It is concise with no redundant information, though it could be slightly more informative without losing brevity.

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?

The tool has no output schema, so the description should hint at return structure or format, but it does not. With 3 parameters and only one required, the description omits context about how the datasetName relates to KNMI datasets or what 'latest' implies. This leaves the agent with incomplete information for effective invocation.

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 only 33% (only datasetVersion has a description). The description does not explain the 'top' or 'datasetName' parameters, nor their meaning or usage. With low schema coverage, the description should provide additional parameter context but fails to do so.

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 'Get latest data files from a specific KNMI dataset', which specifies verb and resource. It distinguishes from sibling tools like knmi_latest_observations and knmi_search_datasets by focusing on 'data files' rather than observations or dataset metadata.

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 only mentions 'Requires KNMI_API_KEY' as a prerequisite but provides no guidance on when to use this tool versus alternatives. There is no indication of when to use knmi_latest_files over knmi_datasets or knmi_latest_observations.

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