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navigate

Navigate the active Chrome tab to a specified URL. Automatically detect and bypass Cloudflare or Turnstile challenges after load, and optionally bring the window to the foreground.

Instructions

Navigate the active tab to url. wait_until: load|none.

auto_verify: if True (default), automatically detect Cloudflare /
Turnstile challenges after load and click the checkbox naturally
(CDP-level click, max 2 attempts). Set False to opt out.

focus: if True (default), bring the tab's window to the OS foreground
after navigating. Without this, programmatic navigation in Chrome
does NOT raise the window — so on systems with the user's own
Chrome already open, MCP-driven navigation can be invisible to the
eye even though it succeeded internally. Set False to navigate
silently (background scraping flows).

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
urlYes
wait_untilNoload
auto_verifyNo
focusNo

Output Schema

TableJSON Schema
NameRequiredDescriptionDefault
resultYes
Behavior4/5

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

No annotations provided, but description explains auto_verify behavior (detects challenges, CDP-level click, max 2 attempts) and focus behavior (brings window to OS foreground vs invisible navigation). Does not cover failure modes or timing.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness5/5

Is the description appropriately sized, front-loaded, and free of redundancy?

Three clear paragraphs: one-sentence function, then parameter explanations with action-oriented directives. No fluff, every sentence adds value.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness4/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Covers parameter details and behavioral side-effects for a simple navigation tool. Output schema exists so return values are not required. Lacks explicit prerequisites (e.g., browser must be open) but these are implied.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters4/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema coverage is 0% and description compensates: explains wait_until options, auto_verify effects, focus behavior with real-world scenario. Does not add to url parameter beyond type.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

States 'Navigate the active tab to url' with specific verb and resource. Distinguishes from sibling tools like navigate_and_snapshot by focusing solely on navigation, and from go_back/go_forward/reload by operating on a URL.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines4/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

Provides explicit guidance: set auto_verify=False to opt out of Cloudflare detection, set focus=False for background scraping. Implicitly suggests use for navigation only, but could mention alternatives like navigate_and_snapshot for combined navigation and snapshot.

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

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