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

Annotations already declare readOnlyHint and openWorldHint, so the description does not need to repeat those. It adds 'Guest content is untrusted' and 'Quiet observations have no feed,' which are behavioral hints, but they are vague and unexplained. No contradiction with annotations.

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 short and front-loaded, but brevity works against it. Two sentences with cryptic phrasing—'Quiet observations have no feed'—does not earn its place because it confuses rather than clarifies. It is concise but not effective.

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 tool with one optional parameter and no output schema, the description should be self-sufficient, but it leaves critical questions unanswered: what does observing entail, what is the return value, and how does guest_token affect behavior. The tool is simple, but the description is insufficient for an agent to invoke it correctly.

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 0% and the description never mentions the sole parameter 'guest_token' or its purpose. With no parameter explanation in either the schema or description, an agent has no idea what this token does or how to provide it correctly.

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 a verb and resource ('Observe your visit'), but the meaning is ambiguous—'observe' could mean anything from viewing to recording. It does not clearly distinguish from siblings like read_resort or act, and the phrase 'Quiet observations have no feed' is cryptic.

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 on when to use this tool versus alternatives. It does not mention any context or conditions, nor does it reference sibling tools or exclusions. The only hint is the ambiguous 'Quiet observations have no feed' which suggests some distinction but is not actionable.

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