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

Annotations already declare read-only, idempotent, non-destructive and closed-world, so safety is covered. The description usefully adds 'Free, no browser session', which tells the agent this costs nothing and does not consume browser state — real value beyond the annotations. It does not describe the shape or length of the returned guide, which matters for a documentation 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 calling rule is front-loaded in the second sentence and the long first sentence is a contents list rather than filler. The Milanote action enumeration is lengthy but earns its place by telling the agent the guide's capability scope. Slightly dense and could be split into bullets for faster scanning.

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 does the right thing by listing what the guide returns (browser selection, sign-in link, method, screens/menus, dedicated tools), so the agent knows what to expect. For a two-optional-parameter, read-only knowledge tool this is close to sufficient; only the response format/length is left unstated.

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% (app name/slug with Milanote default, and the task string in the user's words), so the schema carries parameter meaning. The description only contributes the notion that the app parameter bounds how specific the guidance is (catalog app vs. general method) and that Milanote has enumerated actions. That is marginal added meaning.

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 states a specific retrieval purpose — a how-to guide for working in a web app via the Cloud Browser — and enumerates the guide's contents (browser choice, sign-in link, step-by-step method, screens/menus/actions, notes, dedicated tools). That clearly separates it from the action-oriented siblings like cotlet_browser_click or add_note. It stops short of an explicit 'this is not the click tool' statement, and the run-on enumeration makes the core purpose slightly slow to extract.

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?

Explicit timing guidance is given: 'Call it before the first browser step in an app.' It also states coverage boundaries — works for any web app, and outside Cotlet's catalog you get the general method. No explicit when-not-to-call or named alternative is offered, keeping this below a 5.

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