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

Since no annotations are provided, the description carries the full burden of behavioral disclosure. It only mentions 'detailed analytics, stats' without stating response format, data coverage, read-only nature, permissions, or any limitations, leaving the tool's behavior largely opaque.

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 very short (two sentences) and thus concise, but the structure is awkward: 'Group: Websites' is crammed into the first sentence without punctuation, and the billing sentence is disjointed. It could be clearer while remaining compact.

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 low parameter count, the description could be sufficient, but it lacks essential context for an agent to choose this tool among several similar website analytics siblings. No output schema exists, and the description does not explain the return value or scope of 'detailed', leaving the agent with incomplete information.

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 input schema fully describes the single parameter 'domain' with 'Website / domain name', giving 100% coverage, so the baseline is 3. The description adds no extra meaning beyond what the schema already provides.

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 'Gets detailed website analytics, stats and more', clearly identifying the resource (website analytics) and the action (get). It is distinct from app-related siblings, but it does not explicitly differentiate from get_v3_website_analytics or get_v2_website_competitors, and the phrase 'and more' is vague.

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?

No guidance is provided on when to use this tool versus alternatives like get_v3_website_analytics or get_v2_top_websites. The mention of 'Group: Websites' and billing info does not help an agent decide which tool is appropriate.

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