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

The annotations declare readOnlyHint=false, destructiveHint=false, and openWorldHint=false, so the safety profile is already covered. The description adds the useful behavioral outcome of granting a Verified badge, but it does not explain what happens when no token is found or whether the check can be repeated.

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 with no wasted words and front-loads the core action and result. It is appropriately sized for this simple verification tool.

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 low-complexity tool with one schema-documented parameter and no output schema, the description covers the basic purpose and outcome. It is missing the expected call sequence with verify_domain_start and the behavior when verification fails.

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?

There is one optional parameter with 100% schema description coverage, so the schema already documents the api_key fully. The description does not add parameter-level meaning beyond what the schema provides, which matches the baseline for high coverage.

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 and outcome: it checks for a published token and awards the Verified badge when found. It clearly covers the verification-completion resource, though it does not explicitly distinguish itself from the sibling verify_domain_start beyond the title.

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?

Usage is implied: this is the finishing step after publishing a domain token. However, the description does not state when to call it instead of get_verification or verify_domain_start, nor does it mention prerequisites or failure conditions.

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