Steel MCP Server

Instructions

Implementation Reference

• src/index.ts:602-620 (handler)

  The core handler function implementing the 'navigate' tool logic: validates URL, adds https:// if needed, calls page.goto(url), and returns success message.

  async function handleNavigate(page: Page, args: any): Promise<CallToolResult> {
    let { url } = args;
    if (!url) {
      return {
        isError: true,
        content: [
          { type: "text", text: "URL parameter is required for navigation" },
        ],
      };
    }
    if (!url.startsWith("http://") && !url.startsWith("https://")) {
      url = "https://" + url;
    }
    await page.goto(url);
    return {
      isError: false,
      content: [{ type: "text", text: `Navigated to ${url}` }],
    };
  }

• src/index.ts:459-465 (schema)

  Input schema for the 'navigate' tool, requiring a 'url' string parameter.

  inputSchema: {
    type: "object",
    properties: {
      url: { type: "string", description: "The URL to navigate to" },
    },
    required: ["url"],
  },

• src/index.ts:456-466 (registration)

  Registration of the 'navigate' tool in the TOOLS array, including name, description, and input schema.

  {
    name: "navigate",
    description: "Navigate to a specified URL",
    inputSchema: {
      type: "object",
      properties: {
        url: { type: "string", description: "The URL to navigate to" },
      },
      required: ["url"],
    },
  },

• src/index.ts:916-917 (registration)

  Switch case in the main tool dispatcher (handleToolCall) that invokes the navigate handler.

  case "navigate":
    result = await handleNavigate(page, args);

• src/index.ts:1068-1071 (registration)

  MCP server request handler for listing tools, exposing the 'navigate' tool via the TOOLS array.

  server.setRequestHandler(ListToolsRequestSchema, async () => ({
    tools: TOOLS,
  }));