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: 'opens nothing by itself' makes the non-mutating behavior explicit in prose. It also discloses the return shape at a high level (step-by-step instructions rather than an action result), which is exactly the context an agent needs. It omits whether the guidance is version- or account-specific, but that is a minor gap.

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 two sentences are well front-loaded and earn their place. The closing note about Minuba's official REST API, including a resource count and a dated verification stamp, is tangential to invoking this tool and pads the definition without changing how an agent calls it.

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, read-only guidance tool with no output schema, the description covers what it returns, that it has no side effects, and which tools to use next. The API aside is extra rather than necessary. Nothing an agent needs in order to call it correctly is missing.

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 no parameters, so there is no parameter meaning for the description to supply; baseline 4 applies. Nothing in the description misrepresents the empty schema.

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 resource (materials) and, crucially, clarifies that the tool does not perform the registration itself but returns step-by-step instructions for Minuba's screens, buttons and fields. That resolves the ambiguity created by the imperative name. It stops short of distinguishing itself from the sibling cotlet_app_guide, which is the nearest conceptual overlap.

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 an explicit workflow: call this first to get the steps, then execute them with the cotlet_browser_* tools in the user's Minuba Cloud Browser. That is clear when-to-use guidance plus the follow-up action. It does not say when to prefer this over cotlet_app_guide or what to do if the user lacks a Cloud Browser session.

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