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

The annotations already declare readOnlyHint, idempotentHint and openWorldHint=false, so safety is covered. The description adds a non-obvious behavioral fact beyond those: it "opens nothing by itself" and only returns instructions, so the agent knows no side effect occurs until it drives the browser tools. It stops short of describing the shape/length of the returned steps.

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 first sentences are reasonably front-loaded and carry the actionable meaning, but the closing paragraph about Momence's Developer API (OAuth scopes, endpoints it does and doesn't have, a checked date) is long and largely irrelevant to invoking this specific tool. It earns its place only as background for why the browser path is needed, and could be trimmed substantially.

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 no-parameter, read-only guidance tool with no output schema, the description covers the essential contract: it returns instructions, performs no action, and hands off to the browser tools. What is missing is a sense of what the returned guide contains beyond 'screens, buttons, fields' and whether the steps are tied to a specific session or generic.

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?

The tool takes zero parameters, so there is nothing for the description to disambiguate; the baseline of 4 applies. No parameter claims are made that could mislead.

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?

Mixed signal: it explains the output is a how-to, but the leading sentence reads like a data-listing tool, matching the name.

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 clear next step: after getting the guide, act with the cotlet_browser_* tools in the user's Momence Cloud Browser. However, it never states when to choose this over a sibling such as momence_check_in_member or the browser tools directly, and there are no exclusions or prerequisites beyond the implicit 'the user has a Momence Cloud Browser.'

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