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

Annotations already provide readOnlyHint=true and openWorldHint=true, and the description consistently aligns with those. It adds useful behavioral context beyond annotations: compute units never expire, the response includes deposit address/credit rate/balance URL, and provisioned=false indicates deposit rails are closed. This is meaningful supplemental information.

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 compact and well-structured: it states the core purpose, lists key output contents, and adds an essential caveat about provisioned=false. Every sentence earns its place without redundancy.

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 zero-parameter, read-only tool with no output schema, the description provides all needed operational context: what is returned, the meaning of the key status field, and the payment flow. An agent can confidently invoke this tool and interpret the response correctly.

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 input parameters, so schema coverage is trivially 100% and there is no parameter meaning to clarify. The description correctly focuses on output semantics instead. A baseline of 4 is appropriate for a zero-parameter tool.

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 specific verb ('Return'), a clear resource ('payment options for paid FlareWatch capacity'), and key mechanics (deposit USDT0, credit compute units). This is immediately distinguishable from sibling get_* tools and leaves no ambiguity about what the tool does.

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 gives clear context for when this tool applies: when payment options for paid FlareWatch capacity are needed. It also clarifies the meaning of provisioned=false, which helps agents know the current deposit availability. It does not explicitly name alternatives or state when not to use it, but none are needed given the tool's unique scope.

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