rb209_fertiliser_prices_latest_prices

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

The description exposes the HTTP method 'GET', which signals a read-only operation. However, no annotations exist and the description provides no further behavioral context such as authentication needs, access restrictions, response format, or units/currency of the returned prices.

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 front-loaded sentence that includes both the endpoint and the purpose. There is no filler or redundant content beyond the slight repetition of 'GET' and 'Get'.

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?

With no output schema and no annotations, the description is the only source of information about what the tool returns, yet it only says 'latest prices of fertilisers'. It omits what fertiliser types are covered, units, currency, freshness, and whether access must first be arranged via the sibling request_access 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 takes zero parameters, and the schema coverage is 100%, so the schema carries the full parameter story. The baseline for a parameterless tool is 4, and the description correctly does not invent parameter detail.

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 states a clear action ('Get') and a specific resource ('latest prices of fertilisers'), and includes the exact API endpoint. This is enough to distinguish it from the sibling rb209_fertiliser_prices_request_access and the many unrelated RB209 lookups.

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 call this tool versus related alternatives. In particular, the closely related sibling rb209_fertiliser_prices_request_access is not referenced, and no mention is made of access prerequisites or conditions for using this endpoint.

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