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

The description mentions 'Free:' implying no cost, but does not disclose other behavioral traits such as whether the tool is read-only, requires authentication, or has any side effects. With no annotations, the description carries full burden and falls short.

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 concise sentence with no wasted words. However, it is somewhat vague and could include more detail without becoming verbose.

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 no output schema and no annotations, the description provides minimal context: only that it returns catalog, prices, and payment instructions. It does not specify the format, structure, or any prerequisites. For a simple info tool, this may be barely adequate but lacks completeness.

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 zero parameters and schema coverage is 100%. The description adds value by explaining the output content (catalog, prices, payment instructions), which compensates for the lack of parameters. The description does not repeat schema information.

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 provides 'catalog, prices, and payment instructions' for 'this server,' identifying the resource and output type. However, it does not specify what 'this server' refers to, and the purpose is not fully distinct from sibling tools like 'payment_proof' or 'base_allowance'.

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. With many sibling tools related to payments and server info, the description lacks explicit conditions such as when to prefer this over 'payment_proof' or 'base_allowance'.

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