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

Annotations already declare readOnlyHint=true, idempotentHint=true, and destructiveHint=false. The description adds two behavioral facts beyond annotations: the endpoint is intentionally public and requires no authentication. It also clarifies exactly what pricing data is returned. No contradiction exists, and the added context meaningfully supplements the structured hints.

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, compact sentence that front-loads the core purpose and places the return-content breakdown in parentheses. Every phrase earns its place, with no redundant or vague filler.

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?

For a no-parameter, read-only, idempotent pricing endpoint with an output schema available, the description is fully sufficient. It tells the agent exactly what will be returned glinted and explicitly removes the auth ambiguity that could be inferred from sibling tools requiring login. Nothing needed for correct invocation is missing.

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)Skip, input schema coverage is effectively 100%, and there is nothing to document. The baseline for zero params is 4, and the description appropriately focuses on output content instead of parameter details, which is the right division of labor.

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 uses the specific verb 'Get' with a precise resource: 'public localized Pay-Per-CV pricing', immediately listing concrete components (USD base price, converted EGP regional pricing, exchange rates, entitlement details). It also distinguishes itself from siblings by stating 'Public, no auth required', making its role among purchase/entitlement tools unmistakable.

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 provides clear context with 'Public, no auth required', signaling that this tool is appropriate for unauthenticated pricing lookups and not for actions like purchase_cv_pass or check_cv_entitlement. However, it does not explicitly name an alternative or state a when-not-to-use condition, so it falls just short of full guidance.

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