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

Despite no annotations, the description discloses a key side-effect boundary ('Does not reserve or charge funds'), which is valuable for a financial operation. However, it does not reveal whether the call persists a quote request, whether it is idempotent, or what prerequisites/auth are needed, so the full burden is only partially met.

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?

Three short clauses, no filler, and the essential facts—endpoint, no financial charge, input alias—are front-loaded. Every sentence carries distinct information.

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 tool with an output schema, return format is covered, but the definition lacks usage context and body semantics. In a crowded sibling set with request_capability_quote and estimate_capability, an agent cannot tell when this tool is the right choice, so it is not complete enough.

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 description coverage is 0%, so the description must compensate; it only resolves the duplicate body/input pair by stating they are aliases. It says nothing about what the body payload should contain or what capability_key identifies, leaving two of three parameter semantics underdocumented.

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 names the HTTP endpoint and the resource ('capability') and clarifies that the operation has no financial side effect ('Does not reserve or charge funds'). It is not a tautology, but it does not explicitly distinguish this quote action from siblings like request_capability_quote or estimate_capability, relying on the endpoint path and the no-funds note.

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 when-to-use guidance is provided. The no-funds statement implies a safe/pre-flight use case, but the description does not name alternatives or conditions, so the agent cannot decide between this and request_capability_quote/estimate_capability.

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