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

Annotations already declare readOnlyHint, idempotentHint, non-destructive, and closed-world, so the safety profile is fully covered by structured data. The description contributes only the 'FREE' cost note, which is genuinely useful context annotations cannot express, but adds nothing about response content or behavior.

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?

A single compact sentence with the most decision-relevant qualifiers ('FREE, read-only') front-loaded. It is slightly redundant in repeating 'MCP verification, MCP server verification,' but wastes little space.

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 input parameters and no output schema, the description is the only source of information about what comes back, and it only gestures at topics via a keyword list rather than describing the returned capability/info structure. Annotations cover the safety side, but the payload expectations remain thin.

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 takes zero parameters, so there is nothing for the description to document and the baseline of 4 applies. No parameter-related value is lost.

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 enumerates the topics covered (verification, preflight, certification capabilities, payment mode) rather than stating a clear verb+resource, so the agent must infer that this is an informational/capability-discovery endpoint. It does distinguish the tool's scope from siblings like health or quote_certification by topic, but the purpose is delivered as a comma-separated keyword list rather than a declarative sentence.

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?

There is no explicit guidance on when to call this versus alternatives. The sibling set includes health, find_mcp_servers, mcp_release_preflight, and quote_certification, and the description names overlapping concepts (verification, preflight, certification, payment mode) without saying which situations should route here.

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