get_visitors_stats

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

With no annotations, the description carries the full burden of behavioral disclosure. It only states that it gets stats for a domain but does not describe the response format, whether stats are aggregated, time-constrained, or real-time. The short phrase 'visitor/access statistics' adds minimal context beyond the tool name.

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, front-loaded sentence that states the verb and resource without extraneous words. Every word earns its place.

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?

This is a simple one-parameter tool with no output schema, so the description should at least hint at what the caller can expect in the response. The phrase 'visitor/access statistics' is too vague to define the return value, and no additional context (e.g., time range, aggregation) is provided. Compared to related stats tools, it leaves significant gaps.

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 already has 100% coverage with the domain parameter described as 'Domain to get stats for'. The description merely repeats this, adding no additional meaning about allowed values, format, or edge cases. Baseline 3 applies due to full schema 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 uses the specific verb 'Get' and identifies the resource as 'visitor/access statistics for a domain'. This distinguishes it from sibling tools like get_resource_usage or get_bandwidth_usage, though it does not detail what specific metrics (e.g., unique visitors, page views) are included.

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_bandwidth_usage or get_resource_usage. The description does not mention, exclude, or recommend alternatives, leaving the agent to infer usage from the tool name alone.

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