1、 没有公众号的，可以先去注册开发者测试号
https://mp.weixin.qq.com/debug/cgi-bin/sandboxinfo?action=showinfo&t=sandbox/index

2、获取网页版的Access token
https://developers.weixin.qq.com/doc/offiaccount/Basic_Information/Get_access_token.html

3、获取微信素材列表
https://developers.weixin.qq.com/doc/offiaccount/Asset_Management/Get_materials_list.html

4、微信公众平台接口调试工具
https://mp.weixin.qq.com/debug/

微信公众号如何获取成功发布的文章列表？

https://developers.weixin.qq.com/community/develop/doc/0004a619238e603e33fc1cb3351800?highLine=%25E8%258E%25B7%25E5%258F%2596%25E6%2588%2590%25E5%258A%259F%25E5%258F%2591%25E5%25B8%2583%25E5%2588%2597%25E8%25A1%25A8