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

Annotations already declare readOnlyHint=true and destructiveHint=false; the description earns credit by explaining why — the tool "opens nothing by itself" and only returns instructions, so the agent knows no side effect occurs. It also discloses the external constraint (no public API, no developer portal, checked 11 Oct 2026) that explains the browser-automation route. It does not describe the shape or length of the returned instructions.

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 facts are front-loaded and dense, but "from ChatGPT, Claude or any AI agent" is promotional filler, and the API-availability sentence with a parenthetical check date is verbose relative to the actionable point ("there is no official API"). Three sentences where two tighter ones would carry the same information.

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 guidance tool with no output schema, the description covers what it returns, what it does not do, and which tools to use next. The remaining gap is operational: it never says whether the Cloud Browser must already be open or authenticated, or what to do if the returned steps do not match the user's UI.

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 and 100% description coverage, so there is nothing for the description to disambiguate. Baseline for a no-param tool is 4.

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 the resource (a job in the user's Service Autopilot account) and, crucially, corrects the misleading verb by saying it "Returns how to do it in Service Autopilot step by step (screens, buttons, fields) and opens nothing by itself." That resolves the name/behavior mismatch an agent would otherwise trip over. It does not differentiate against the other service_autopilot_* siblings, which likely follow the same guide-then-browse pattern.

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 two-step workflow: call this to obtain the click-by-click procedure, then execute it with the cotlet_browser_* tools in the user's Cloud Browser. The statement that Service Autopilot has no public API or self-service keys usefully rules out an entire wrong approach. It stops short of naming explicit exclusions (e.g., when to prefer cotlet_app_guide) or stating prerequisites such as an already-open/authenticated browser session.

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