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navigate_page

Directs Chrome to open a URL or move back, forward, or reload the current page, with optional targeting of a specific page by ID.

Instructions

Go to a URL, or back, forward, or reload.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
urlNoTarget URL (only type=url)
typeNo
pageIdNoTargets a specific page by ID. Defaults to the selected page.
timeoutNo
initScriptNoJavaScript to run on each new document before other scripts for the next navigation.
ignoreCacheNo
handleBeforeUnloadNo

Schema Changelog

Changes observed during successful MCP inspections.

  1. First observedv0.4.3

TDQS

C2.7/5.0
Behavior2/5

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

No annotations are provided, so the description carries the full burden. It says nothing about side effects (state loss on navigation), how handleBeforeUnload prompts are resolved, timeout behavior, or that initScript only applies to the next navigation. For a 7-parameter navigation tool this is a significant gap.

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

Conciseness4/5

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

A single front-loaded sentence with no filler; the mode list is efficient. It is arguably too terse for the tool's complexity, but the structure itself is clean.

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

Completeness2/5

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

With 7 parameters, no annotations, no output schema, and 43% schema coverage, the description is far too thin to let an agent invoke the tool correctly, especially for timeout, ignoreCache, and beforeUnload handling.

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

Parameters2/5

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

Schema coverage is only 43% (below 50%), so the description must compensate. It implicitly documents the type enum values but says nothing about timeout, ignoreCache, handleBeforeUnload, or how url is required for type=url. The remaining undocumented parameters stay opaque.

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

Purpose4/5

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

States a clear verb ('Go to') and resource (URL) plus the alternative navigation modes (back/forward/reload), so an agent knows exactly what the tool does. It does not distinguish itself from siblings like new_page, select_page, or reload_bridge_extension, which also touch navigation/page state.

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

Usage Guidelines2/5

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

The description names the four navigation modes but gives no guidance on when to use navigate_page versus siblings such as new_page or select_page, nor any prerequisites or context. Usage is only implied by the enum values.

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