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

Annotations already cover safety (readOnly, idempotent, non-destructive, closed-world), and the description adds real value beyond them: it states the call is "Free, no browser session" (a cost/side-effect fact not in annotations) and describes what the response contains. It stops short of describing response size or format, but the key behavioral traits are 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?

The trigger sentence is front-loaded and the closing clauses about scope and cost are efficient. The opening sentence is a dense run-on enumeration of returned content, but every clause conveys information the agent would otherwise have to guess.

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?

With no output schema, the description carries the burden of describing returns, and it does so by listing the guidance categories. Combined with the two optional parameters and low complexity, an agent has enough to call it correctly; only response shape/length is unspecified.

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 100%, so both `app` and `task` are already documented, including the Eventbrite default and the user's-words framing. The description adds no parameter-level meaning beyond the schema, so the baseline 3 applies.

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 gives a specific verb and resource: it returns guidance on how to drive a web app through the user's Cloud Browser with Cotlet's browser tools, and it enumerates the contents (which browser/sign-in link, step-by-step method, screens, menus, actions, notes, dedicated tools). That clearly separates it from the action tools like cotlet_browser_click or cotlet_apps, though it never names a sibling explicitly.

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?

"Call it before the first browser step in an app" is an explicit, actionable trigger condition, and "Works for any web app; one outside Cotlet's catalog gets the general method" clarifies scope and edge behavior. There is no explicit when-not or named alternative, which keeps it short of a 5.

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