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

Annotations already declare readOnly, idempotent, non-destructive, closed-world, so the safety profile is covered. The description adds genuinely new operational facts beyond that: it is free and opens no browser session, and it falls back to a general method for apps outside the catalog. It does not describe the response shape in detail, keeping it below a 5.

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 is front-loaded in the opening clause and the closing sentences cover the call trigger and cost. The middle enumeration of returned content is dense and slightly run-on, but every phrase carries information an agent needs.

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 explaining return content, and it does so by enumerating the sections an agent will receive. Combined with the call-timing rule and the no-cost/no-session note, this is sufficient for a low-complexity, zero-required-parameter 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?

Schema coverage is 100%, so both the app slug and the user-worded task are already documented structurally. The description hints at the app's role (selecting browser and sign-in link for the workspace) but does not explicitly explain how the task argument shapes the returned guidance, so it adds little beyond the schema baseline.

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 names a specific deliverable — step-by-step method, which browser to use, sign-in link, screens/menus/actions, notes, and app-specific tools — which is clearly distinct from the browser action siblings (click, navigate, fill_form). It also states scope (any web app, catalog or not), so an agent can tell it apart from cotlet_apps without opening schemas.

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" gives an explicit trigger condition and ordering relative to the browser tools. It does not name a specific alternative to use instead in any scenario, but the sequencing guidance is strong enough that an agent knows when to invoke it.

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