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

Annotations already declare readOnlyHint=true and openWorldHint=false, covering the safety profile. The description adds that it returns verification status, which is useful context about the output. However, it does not disclose any additional behavioral traits like sorting, pagination, or potential rate limits. With annotations covering the read-only nature, a score of 3 is appropriate.

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 efficient sentence with no redundant information. It front-loads the action and resource, making it easy to parse. Every word contributes to the tool's purpose.

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?

Given the zero-parameter schema, no output schema, and overall low complexity, the description is complete. It states what the tool returns (websites with verification status) and needs no further explanation. An agent can call this tool without additional context.

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 has zero parameters and the schema coverage is 100% (empty). Per the baseline rule for 0 params, the description does not need to compensate for parameter documentation. The description adds value by indicating the output includes verification status, which is relevant to the no-parameter call.

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 action ('List') and the resource ('websites on this DevDome account') with an additional detail ('verification status'). It distinguishes this tool from siblings like add_site or verify_site, which perform different actions. The purpose is unambiguous.

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?

The description provides no explicit guidance on when to use this tool versus alternatives. While it is implied that this is the default listing tool, there is no mention of when not to use it, or any alternative such as get_breakdown or get_stats. The agent must infer usage context from sibling names alone.

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