Open URL in logged-in Chrome

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

Annotations already signal side effects (readOnlyHint=false, openWorldHint=true, idempotentHint=false), so the description needs less behavioral detail. It adds the useful context that Chrome uses a profile belonging to the current Windows user, but it does not explain whether a new tab or window is opened, whether Chrome is launched if not running, or how failures are reported.

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 description is a single, front-loaded sentence with no filler or repeated annotation data. Every part contributes to understanding what the tool does.

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 simple tool with two parameters and no output schema, the description is mostly complete enough for an agent to select and invoke it. It clearly identifies the URL and Chrome profile; the main missing pieces are the exact session/tab behavior and platform failure modes, but these are not blocking for a basic open-URL action.

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?

With 0% parameter description coverage in the schema, the description must compensate. It adds some meaning by clarifying that URL must be HTTP/HTTPS and that profile is associated with the current Windows user, but it leaves details unclear such as how profiles are resolved or what the default 'Default' profile means beyond standard Chrome behavior.

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 action (open an HTTP/HTTPS URL) and a specific resource (Google Chrome using a profile belonging to the current Windows user). This is more informative than the title and clearly differentiates the tool from generic siblings like launch_program or browser_control.

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?

The description provides no guidance about when to prefer this tool over alternatives such as http_request, browser_control, or launch_program. It also omits any conditions, exclusions, or prerequisites beyond the implied Windows/Chrome context.

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