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

The description adds substantial behavior beyond the annotations: it explains the 402/payment flow, the requirement for confirm_write on POST, the preservation of PAYMENT-REQUIRED, and the non-exposure of sensitive routes or arbitrary auth headers. No contradiction with annotations exists.

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 densely informative, front-loading the core action and then covering the key behavioral rules in four sentences. Every sentence earns its place with no fluff or repetition.

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 no output schema, the description covers the essential invocation flow, payment edge case, retry condition, and security restrictions. It is sufficient for an agent to decide when to call it, how to call it safely, and what to expect on 402 responses.

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?

With schema coverage at only 43%, the description compensates well by explaining the relationship between method, confirm_write, and payment_signature, plus the role of alternative_intent in selecting the closest no-spend alternative. It adds meaning beyond the raw schema, though body and query parameters remain somewhat generic.

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 calls a concrete SqueezeOS REST path on the canonical public host, which distinguishes it from sibling tools that discover, inspect, or compare capabilities. It also specifies the resource type and constraints like path format and excluded sensitive routes.

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?

It gives clear method-level guidance: GET is read-only, POST requires confirm_write=true, and retry only with a challenge-specific payment_signature. It also states when the tool returns an alternative rather than the original result, though it does not explicitly name sibling tools as alternatives.

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