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

Annotations already declare readOnlyHint=true, idempotentHint=true and destructiveHint=false, and the description is consistent with that ('opens nothing by itself'). It adds genuinely new behavioral context: the return is a screen/button/field walkthrough, and the actual mutation must be performed by separate browser tools. It does not mention latency, auth state, or how the guidance adapts to the user's specific product.

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 purpose and the browser-tool handoff are front-loaded and efficient. The closing API paragraph is a long sentence fragment with pricing-tier trivia and a 'checked 28 Oct 2026' date that adds little to tool selection and dilutes the definition.

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 and no output schema, the description carries the full burden, and it does explain what is returned at a high level. It still leaves gaps: how the target item/par level is identified, whether a browser session must already exist, and what the guidance looks like if the user's account lacks the screen.

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, which is the baseline-4 case, and the description correctly frames it as a guidance generator rather than an action with inputs. It could have been clearer about how the specific item and par value are conveyed (presumably from conversation context) since there is no schema slot for them.

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 (set par level) and resource (MarketMan par levels), and then clarifies the real mechanism: it returns step-by-step instructions and 'opens nothing by itself.' The verb 'set' in the name/title slightly oversells what the tool does, but the description immediately corrects that, so an agent can tell what it gets back.

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 follow-up path ('then do it with the cotlet_browser_* tools in the user's MarketMan Cloud Browser'), which is useful orchestration guidance. However, it never states prerequisites (e.g., that a browser session must be opened first), nor when to prefer this over the sibling MarketMan list/query tools, leaving selection logic implicit.

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