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

The annotation readOnlyHint:true and destructiveHint:false are consistent with the description's payment focus, implying no side effects. The description adds cost-related behavior (premium, payment methods) but does not describe the return format or any potential limitations. There is no contradiction with annotations.

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 moderately concise but includes unnecessary details like the full HTTP URL and pricing specifics. It is structured as a single sentence with embedded clauses, which is acceptable but not optimal for quick scanning.

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, no parameter descriptions, and no mention of required filters or response structure, the tool description is incomplete. It provides payment context but omits essential usage details such as what 'filters' expects or what data the response contains, making it insufficient for correct 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?

The input schema has 5 parameters (to, from, limit, cursor, filters) with no descriptions and 0% coverage. The description does not explain the meaning or purpose of any parameter, leaving agents without guidance on how to set them. This is a critical gap for usability.

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 a Premium Wanchain economics time series from ARCHIVE, covering supply, fees, and related metrics over time. This gives a specific and distinct purpose, though it does not explicitly contrast with sibling tools like get_token or list_tokens.

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 payment instructions (prepaid credit or per-request x402) and references orbitpay_info for signing steps. However, it does not specify when to use this tool over alternatives or what conditions might require it, leaving usage context partially vague.

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