browser_open

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

With no annotations provided, the description carries the full disclosure burden, and it does add one real behavioral fact: only the local browser profile is used, implying an existing authenticated session rather than a fresh or remote context. However, it omits tab behavior (current vs. new tab), whether it waits for page load, and what happens on navigation failure.

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?

One compact clause pair with the action front-loaded and the profile constraint following as a qualifier; nothing is wasted. The phrasing after the semicolon is slightly terse but still earns its place as behavioral context.

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?

This is a simple one-parameter tool, so the definition is close to sufficient for invocation. It is still thin on what the agent gets back (no output schema exists, so page-load status or error signaling is undescribed) and on tab/session preconditions relative to browser_tabs and browser_switch_tab.

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?

Schema description coverage is 0% for the single 'url' parameter, so the description must compensate. The phrase 'HTTP(S) page' does add a meaningful constraint — the URL scheme is restricted to http/https, excluding file:// or about: URLs — but it says nothing about format, relative paths, redirects, or validation 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?

States a specific verb ('Navigate') and resource ('HTTP(S) page'), which cleanly separates it from siblings like browser_back, browser_click, and browser_read. It stops short of naming an alternative, but the core action is unambiguous.

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?

There is no explicit when-to-use or when-not-to-use guidance; the agent must infer that this is the entry point for loading a page before reading or interacting with it. The only routing hint is the implicit contrast with navigation-adjacent siblings, which the description never states.

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