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

Annotations already declare readOnlyHint=true, idempotentHint=true and destructiveHint=false, so safety is covered structurally. The description adds genuinely new behavioral facts: the tool opens nothing by itself, its return value is a step-by-step operational recipe, and execution must happen through the browser tools. The API-capability paragraph explains why a browser path exists at all, though it drifts into territory unrelated to this specific tool.

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 core behavior (returns steps, opens nothing, then use cotlet_browser_*) is front-loaded and tight. The trailing paragraph about Momence's Developer API enumerates unrelated gaps (creating classes, messaging customers, refunds) that do not help an agent decide how to invoke this tool, and the "from ChatGPT, Claude or any AI agent" phrasing is filler.

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 tool with no output schema, the description does the needed work: it states what comes back (screens, buttons, fields) and what to do next. What it never resolves is how the target member is supplied, which is the one question an agent will have before calling.

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 the baseline is 4, and the empty schema with additionalProperties=false leaves nothing for the description to disambiguate. However, the absence of any member identifier is itself a semantic gap the description never addresses, leaving the agent to infer that the member is located via the browser.

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 opens with a specific verb+resource ("Check in member") and immediately reframes what the tool actually returns: step-by-step instructions rather than performing the check-in. That distinction alone separates it from the cotlet_browser_* action tools. It stops short of naming any sibling Momence tool (e.g. momence_book_customer_into_class) as the alternative, so it is clear but not sibling-differentiated.

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?

Guidance is implied through a described two-step workflow: call this to learn the screens/buttons/fields, then execute with cotlet_browser_* in the Momence Cloud Browser. There is no explicit statement of when to prefer this over other Momence tools, and no note that the member must be identified during the browser phase since there are no parameters.

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