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

Annotations already declare readOnlyHint, openWorldHint, idempotentHint, and non-destructive. The description adds the cost ($0.05 USDC) and the two-step nature (verify then possibly use Distribution Pack). It is consistent with annotations and does not contradict them.

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 sentence that front-loads cost and purpose. It is dense but not overly long, though it packs multiple concepts (cost, verify, follow-up) which may reduce readability slightly.

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?

There is no output schema and no description of return values. The tool has 12 parameters with no guidance, and it does not explain what 'readiness' means or what the check returns. It gives a follow-up action but not the outcome, making it incomplete for a paid check tool.

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%, and the description mentions none of the 12 parameters. It does not explain what providerId, capabilityId, endpoint, priceUsd, etc. mean or how they are used. The agent must rely solely on parameter names, which is insufficient for a complex 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 the tool verifies provider readiness and the live x402 contract, and recommends the Distribution Pack for fixes. It identifies a specific action (verify) and a resource (provider readiness + x402 contract), but does not clearly differentiate from siblings like agent_readiness or x402_ping.

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 a conditional follow-up ('use the $5 Distribution Pack when discoverability artifacts or launch fixes are needed'), which is useful, but it does not explain when to use this tool over agent_readiness or x402_ping, nor when not to use it. The implied combined check lacks explicit alternatives.

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