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

Annotations already declare readOnly, idempotent, non-destructive and closed-world, and the description is consistent with them by stressing "opens nothing by itself" — useful confirmation that no browser action occurs. It adds the credit-billing note for the external Open API, but that sentence describes Kalodata the product rather than this tool's behavior, and no return shape or step granularity is 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 core behavioral fact is buried mid-sentence after marketing framing ("from ChatGPT, Claude or any AI agent"), and the closing sentence about Kalodata's official Open API and per-credit billing is off-topic for invoking this tool. Roughly half the text does not help an agent decide or act.

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 guide tool with no output schema, the description covers what is returned (screens, buttons, fields) and what to do next. It omits how detailed or self-contained the returned steps are and whether the caller should pass them verbatim to cotlet_browser_* tools, which leaves the handoff pattern underspecified.

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 no per-argument semantics for the description to carry. The baseline applies, with a small deduction because the description never explains that the absence of inputs means the guide is generic rather than scoped to a category or timeframe.

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 name and title promise a data-listing action, but the description reveals the tool actually returns step-by-step instructions ("Returns how to do it in Kalodata step by step (screens, buttons, fields) and opens nothing by itself"). That correction is valuable, yet the headline verb still misleads an agent into expecting creator data back, and no sibling is named to distinguish it from kalodata_list_top_shops or kalodata_list_top_videos.

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 states the follow-on path explicitly: call the cotlet_browser_* tools in the Kalodata Cloud Browser to actually perform the steps. However, it gives no condition for choosing this tool over the sibling listing tools or over cotlet_app_guide, and no prerequisite or account-state guidance for a guide-style call.

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