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

The description's key disclosure — that this tool changes nothing and returns step-by-step screen/button/field instructions — is consistent with readOnlyHint, idempotentHint, and destructiveHint=false and adds real value about output form. The Cloud Browser handoff is additional behavioral context the annotations cannot express. The justification for the browser route (no public AestheticsPro API) is also disclosed.

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?

Front-loaded: the action, the no-side-effects guarantee, and the follow-up tool family all land in the first two clauses. The closing note on AestheticsPro's Enterprise-only custom API is somewhat long-winded and pricing detail is largely background, but it does justify why browser automation is the route. No filler sentences beyond that.

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 definition covers what is returned (screens, buttons, fields) and what to do next, which is what an agent needs. The remaining gap is how the target client/opening is established with an empty input schema. The API-availability note is useful context for why this workflow exists.

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 tool takes zero parameters, so there is nothing for the description to disambiguate and the baseline of 4 applies. The description does not explain, however, how the specific client or opening context is supplied given the empty schema, which leaves a small interpretive gap.

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 first sentence states a specific verb and resource — notifying a client of an opening inside the user's own AestheticsPro account — which reads clearly. It implicitly separates itself from action tools by saying it opens nothing by itself, though it does not name a specific sibling. A slightly tighter statement of what an 'opening' means (schedule opening vs. service opening) would earn a 5.

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?

Explicitly frames the tool as a planning/instruction step: it returns steps and performs no action, and the actual work is done via the cotlet_browser_* tools in the AestheticsPro Cloud Browser. That is actionable when-to-use guidance plus the follow-up path. It stops short of contrasting with nearby siblings like send_client_text or choose_reminder_channel, which an agent might otherwise pick for similar goals.

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