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puppeteer_navigate

Direct a browser to load a specific webpage by providing its URL. This action enables web automation for tasks like content extraction, interaction, or testing.

Instructions

Navigate to a URL

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
urlYes

Implementation Reference

  • The switch case that implements the core logic for the 'puppeteer_navigate' tool: navigates the Puppeteer page to the specified URL and returns a success response.
    case "puppeteer_navigate":
      await page.goto(args.url);
      return {
        content: [{
          type: "text",
          text: `Navigated to ${args.url}`,
        }],
        isError: false,
      };
  • The input schema for the 'puppeteer_navigate' tool, defining a required 'url' property of type string.
    inputSchema: {
      type: "object",
      properties: {
        url: { type: "string" },
      },
      required: ["url"],
    },
  • index.ts:103-113 (registration)
    The tool registration object in the TOOLS array that defines the name, description, and schema for 'puppeteer_navigate', used by the ListToolsRequestSchema handler.
    {
      name: "puppeteer_navigate",
      description: "Navigate to a URL",
      inputSchema: {
        type: "object",
        properties: {
          url: { type: "string" },
        },
        required: ["url"],
      },
    },
  • index.ts:447-449 (registration)
    The server request handler for listing tools, which returns the TOOLS array including 'puppeteer_navigate'.
    server.setRequestHandler(ListToolsRequestSchema, async () => ({
      tools: TOOLS,
    }));
  • index.ts:451-451 (registration)
    The server request handler for calling tools, which dispatches to handleToolCall based on the tool name, routing 'puppeteer_navigate' to its implementation.
    server.setRequestHandler(CallToolRequestSchema, async (request) => handleToolCall(request.params.name, request.params.arguments ?? {}));
Behavior2/5

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

With no annotations provided, the description carries full burden but only states the basic action. It doesn't disclose behavioral traits like whether navigation waits for page load, handles errors, requires specific permissions, or has side effects. This leaves significant gaps for a tool that likely interacts with a browser.

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?

The description is extremely concise at three words, front-loaded with the core action, and has zero wasted text. Every word ('navigate', 'to', 'a URL') contributes directly to understanding the tool's function.

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?

Given no annotations, no output schema, and a single parameter with 0% schema coverage, the description is incomplete. It doesn't explain what happens after navigation (e.g., returns success/failure, waits for load), error conditions, or how it fits into the broader Puppeteer toolset, making it inadequate for safe and effective use.

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

Parameters3/5

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

Schema description coverage is 0%, but the description mentions 'URL' which aligns with the single 'url' parameter. However, it adds minimal semantic value beyond what's implied by the parameter name—no details about URL format, validation, or examples. With only one parameter, the baseline is 4, but the lack of additional context reduces this to 3.

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?

The description clearly states the action ('navigate') and target ('to a URL'), providing a specific verb+resource combination. However, it doesn't differentiate this from sibling tools like puppeteer_click or puppeteer_hover, which also involve browser interactions but different actions.

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 provides no guidance on when to use this tool versus alternatives. It doesn't mention prerequisites (e.g., needing an active browser session), sequencing (e.g., use before interacting with page elements), or when other tools might be more appropriate for similar tasks.

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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