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

Annotations already declare readOnlyHint, idempotentHint and destructiveHint=false, so safety is covered by structured data. The description adds genuinely new behavioral context: it returns procedural guidance rather than performing the action, and the action must be carried out via the browser tools. The closing sentence about REsimpli's Open API is tangential and adds little behavioral value.

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 message is front-loaded and useful, but the definition carries filler ('from ChatGPT, Claude or any AI agent') and a trailing sentence about REsimpli's Open API with a dated verification stamp that does not help an agent decide or act. Trimming those would sharpen it considerably.

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 parameters, no output schema and safety fully covered by annotations, the description supplies the missing pieces: what the return value conceptually is (step-by-step instructions) and what the agent must do next. It is adequately complete for a zero-parameter guidance tool, with only the extraneous API note as dead weight.

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 for 0 params is 4. No parameter claims are made that could conflict with 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 verb and resource: produce step-by-step instructions (screens, buttons, fields) for creating a lead in the user's REsimpli account. It explicitly corrects the misleading tool name by saying it 'opens nothing by itself', which tells an agent the tool is a guide, not a mutation. The interleaved API-plan trivia slightly blurs the core purpose statement.

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 sequencing rule: get the steps here, then execute them with the cotlet_browser_* tools in the user's REsimpli Cloud Browser. That is actionable usage context tied to named siblings. It stops short of saying when not to use this (e.g., versus cotlet_app_guide or a native API path), so it falls short of 5.

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