get_visitor_activity

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

No annotations are provided, so the description carries the full burden. It discloses nothing about behavior such as required authentication, rate limits, data format, time ranges, or potential side effects. The 'PRO+ plan' note hints at access restrictions but does not explain operational 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?

The description is extremely concise: two short sentences with no fluff. It front-loads the core purpose and states the plan restriction efficiently. However, brevity comes at the cost of missing necessary details, but the structure itself is clean.

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?

The tool likely requires a visitor identifier, but neither the schema nor the description provides it. With no output schema, no annotations, and an empty input schema, the description is insufficient for an agent to confidently invoke the tool. The 'PRO+ plan' hint is useful but not enough to make the tool self-explanatory.

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 schema is empty with additionalProperties true, meaning no parameters are formally defined. The description says 'for one visitor' but does not specify how to identify that visitor (e.g., a visitor ID parameter). The agent is left without any guidance on what key to pass or if parameters are even required.

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 resource: a timeline of activity for one visitor. It implies a read operation and specifies the scope (one visitor), which helps distinguish it from sibling tools like get_top_visitors. However, it lacks a explicit verb and does not detail what kind of activity is 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?

The description provides no guidance on when to use this tool versus alternatives. The only additional note is 'PRO+ plan,' which is an access requirement, not a usage guideline. There is no mention of when to choose this over similar analytics tools like get_page_journeys or query_events.

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