List rate providers

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

Annotations already declare readOnlyHint, idempotentHint, and openWorldHint, so the safety and idempotency are clear. The description adds that results can be filtered by category, which is consistent with the schema. No additional behavioral details (e.g., pagination, default limit) are disclosed, but given the annotations, the description meets a baseline of transparency.

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 sentence with no waste. It clearly states the core function and the optional filter. It could be slightly improved by front-loading the result scope, but overall it is concise.

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 simple nature of a listing tool and the presence of a full output schema, the description is adequate. It covers the primary use case (list all, filter by category) but lacks details on default behavior (e.g., default limit of 100) and edge cases (e.g., empty results).

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%, so both 'limit' and 'category' are already documented. The description mentions filtering by product category, which provides a brief usage context beyond the schema's description. This adds modest value, but no additional meaning is given for the 'limit' parameter.

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 the tool lists all rate providers with optional filtering by category. While it is specific about the resource ('rate providers'), it does not differentiate among sibling tools that also involve listing (e.g., list_coins). However, the context of rate providers is distinct enough from coin-centric siblings.

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 provided on when to use this tool versus alternatives. For instance, a user might wonder whether to use 'list_providers' or 'get_rates' for a specific need. There is also no mention of prerequisites or excluded scenarios.

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