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

Annotations already declare readOnlyHint=true and openWorldHint=false, so safety is covered. The description contributes the output content (per-visit fields including bot detection), which is genuinely useful since no output schema exists, but it says nothing about ordering, default time window, or rate/volume 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 fragment with the resource front-loaded and no wasted words. It is efficient, though arguably under-specified rather than truly concise.

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 six-parameter, no-output-schema tool, the description omits the meaning of the time window ('recent'), the default and role of limit, and the pagination contract (only documented inside the 'before' schema field). It covers the return fields but not the invocation details an agent needs.

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?

Schema description coverage is only 33% (six parameters, only 'from' and 'before' documented), so the description is expected to compensate and does not. The word 'Recent' loosely gestures at the days/from/to window but gives no default or syntax, and site, limit, and to are left entirely unexplained.

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 names a specific resource (recent individual visits) and enumerates the returned attributes (entry page, path, country, device, human/bot), which clearly separates it from aggregate siblings like get_breakdown and get_stats. It is clear rather than vague, though it relies on the tool name for the verb and never explicitly contrasts itself with get_realtime.

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 when-to-use guidance, no prerequisites, and no mention of alternatives such as get_realtime or get_stats. The agent must infer from the field list alone that this is the raw-visit-log tool.

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