Steel MCP Server

Instructions

Implementation Reference

• src/index.ts:824-842 (handler)

  The main handler function for the 'go_back' tool. It calls page.goBack() with waitUntil 'domcontentloaded' and returns success or error based on whether there was a previous page.

  async function handleGoBack(page: Page): Promise<CallToolResult> {
    const response = await page.goBack({ waitUntil: "domcontentloaded" });
    if (!response) {
      return {
        isError: true,
        content: [
          {
            type: "text",
            text: "Cannot go back. No previous page in the browser history.",
          },
        ],
      };
    }
  
    return {
      isError: false,
      content: [{ type: "text", text: "Went back to the previous page." }],
    };
  }

• src/index.ts:557-561 (schema)

  The input schema for the 'go_back' tool, which requires no parameters (empty object).

  inputSchema: {
    type: "object",
    properties: {},
    required: [],
  },

• src/index.ts:554-562 (registration)

  Registers the 'go_back' tool in the TOOLS array, including its name, description, and schema.

  {
    name: "go_back",
    description: "Go back to the previous page in the browser history",
    inputSchema: {
      type: "object",
      properties: {},
      required: [],
    },
  },

• src/index.ts:934-935 (helper)

  The switch case in handleToolCall that routes 'go_back' calls to the handler function.

  case "go_back":
    result = await handleGoBack(page);