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

Annotations already declare readOnlyHint=true and destructiveHint=false, and the description reinforces this with 'opens nothing by itself', so there is no contradiction. Beyond that it discloses the actual return content (step-by-step screens, buttons, fields) and the required follow-up with cotlet_browser_* tools, plus a dated note that no public API exists. It omits what happens if no visit is selected or whether the guide is cached.

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 purpose and the 'opens nothing by itself' constraint are front-loaded, and the follow-up requirement comes immediately after. The closing API-availability sentence is long and somewhat archaeological, but it does justify why browser tools are required and is clearly separable from the operational content.

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 zero-parameter, read-only guidance tool with no output schema, the description covers what it returns, that it mutates nothing, and the exact follow-up path. The main omissions are target-visit identification and failure behavior, which are minor but real for an edit-oriented tool.

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?

With zero parameters and 100% schema coverage there is nothing for the schema to document, so the baseline of 4 applies. The one semantic gap is that the description never explains what determines the target visit (presumably browser-session state), which an agent would reasonably wonder about for an 'edit' tool.

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 specific verb and resource ('Edit visit in the user's own EZ Lawn Biller account') and then clarifies the real mechanism: it 'Returns how to do it in EZ Lawn Biller step by step (screens, buttons, fields)'. That is far more informative than the name alone. It stops short of naming any sibling (e.g. add_visit or cancel_this_visit) to delimit the edit scope.

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?

It gives a clear workflow instruction — call this, then perform the action with the cotlet_browser_* tools in the Cloud Browser — which tells the agent how the tool fits into a sequence. However, it never says when to choose this over sibling edit/add/cancel visit tools, nor what preconditions (an active browser session, a selected visit) must hold.

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