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

Annotations already declare readOnly/idempotent/non-destructive, so the bar is lower, but the description adds real value by stating it opens nothing by itself and that it returns procedural content with screens, buttons, and fields. That prevents an agent from assuming a side effect occurred. It could go further on what the returned steps look like or their limits, but this is solid added context.

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 key constraint ("opens nothing by itself") is present, but the first sentence is an awkward run-on and the trailing "Anaplan's official API: Yes." is an unexplained fragment that adds noise. The follow-up instruction is useful but the text could be tightened considerably.

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, non-destructive guide tool with annotation coverage and no output schema, the description covers what it returns and what to do next. It lacks prerequisite context (permissions/admin role needed) and any detail on the shape or limits of the returned steps, so it is complete but not exhaustive.

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 schema confirms an empty object. The description does not raise ambiguity about inputs, though it also does not explain how the target user identity is conveyed (presumably consumed later by the browser tools) — a minor open point given the task implied by the title.

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 makes the core nature clear: it returns a step-by-step procedure ("screens, buttons, fields") rather than performing the add itself, and it explicitly notes "opens nothing by itself." That distinguishes it from the cotlet_browser_* action tools. The opening phrasing "Add user in the user's own Anaplan account" initially reads like a mutating action, which blunts the clarity slightly, and it never mentions the sibling anaplan_set_user_role.

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 follow-on workflow ("then do it with the cotlet_browser_* tools in the user's Anaplan Cloud Browser"), which implies this tool is the guidance step before browser execution. However, it offers no explicit when-not guidance, no prerequisites (e.g., admin rights required to add users), and no differentiation from other anaplan_* siblings.

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