WeChat Mini Program Dev MCP

Instructions

Implementation Reference

• src/tools/page.ts:139-159 (handler)

  The main handler implementation for the 'page_setData' tool. It parses the input arguments, extracts data keys, and uses the page.setData method to update the page data, returning a confirmation message.

  function createSetPageDataTool(manager: WeappAutomatorManager): AnyTool {
    return {
      name: "page_setData",
      description: "使用 setData 更新当前页面的数据。",
      parameters: setPageDataParameters,
      execute: async (rawArgs, context: ToolContext) => {
        const args = setPageDataParameters.parse(rawArgs ?? {});
        const dataKeys = Object.keys(args.data ?? {});
        return manager.withPage<ContentResult>(
          context.log,
          { overrides: args.connection },
          async (page) => {
            await page.setData(args.data);
            return toTextResult(
              `已更新页面数据键: ${dataKeys.length ? dataKeys.join(", ") : "(无)"}。`
            );
          }
        );
      },
    };
  }

• src/tools/page.ts:20-22 (schema)

  Zod schema defining the input parameters for the page_setData tool, including the 'data' record and inherited connection properties.

  const setPageDataParameters = connectionContainerSchema.extend({
    data: z.record(z.unknown()),
  });

• src/tools/page.ts:42-51 (registration)

  Page tools factory function that registers the page_setData tool among other page tools.

  export function createPageTools(manager: WeappAutomatorManager): AnyTool[] {
    return [
      createGetElementTool(manager),
      createWaitForElementTool(manager),
      createWaitForTimeoutTool(manager),
      createGetPageDataTool(manager),
      createSetPageDataTool(manager),
      createCallPageMethodTool(manager),
    ];
  }

• src/tools.ts:7-13 (registration)

  Main tools factory that includes page tools (containing page_setData) by spreading createPageTools.

  export function createTools(manager: WeappAutomatorManager): AnyTool[] {
    return [
      ...createApplicationTools(manager),
      ...createPageTools(manager),
      ...createElementTools(manager),
    ];
  }

• src/index.ts:17-17 (registration)

  Final registration of all tools (including page_setData) to the FastMCP server.

  server.addTools(createTools(manager));