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

The annotations already declare readOnlyHint, idempotentHint and non-destructive, and the description corroborates them by stating the tool performs no action and only returns instructions. It adds useful context that there is no official MCP server and that the procedure must be executed through the Cloud Browser, though it says nothing about what the returned guide looks like or how long it is.

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?

Two of the three sentences carry the load, but 'from ChatGPT, Claude or any AI agent' is marketing padding and the closing API/MCP-server survey is largely irrelevant to invoking the tool. The key caveat that it performs nothing should be front-loaded rather than arriving mid-sentence.

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 guide tool with no output schema, the definition covers the essential workflow: get the instructions, then execute them with the browser tools. The main gap is that it doesn't describe the shape of the returned guide, which the agent must parse to act on.

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 schema has zero parameters, so there is nothing for the description to document; baseline 4 applies. The description correctly implies no inputs are needed beyond the account context.

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 behavior: it returns step-by-step instructions for creating a project in Amazing Marvin rather than creating one. This resolves the ambiguity in the name 'create_project', although the purpose statement is buried behind channel marketing phrasing ('from ChatGPT, Claude or any AI agent').

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 says explicitly that the tool 'opens nothing by itself' and directs the agent to 'do it with the cotlet_browser_* tools' afterwards, which is a clear two-step workflow. It doesn't state when to prefer this over simply calling cotlet_app_guide or navigating directly, so it falls short of full routing guidance.

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