Webhook Tester是一个很好的工具:https://webhook.site (GitHub)

对我来说很重要的是，它显示了请求者的IP，当您需要将一个IP地址列入白名单但不确定它是什么时，这很有帮助。

https://httpbin.org/

它将在请求中使用以下类型的任何数据进行回显:

https://httpbin.org/anything Returns most of the below. https://httpbin.org/ip Returns Origin IP. https://httpbin.org/user-agent Returns user-agent. https://httpbin.org/headers Returns header dict. https://httpbin.org/get Returns GET data. https://httpbin.org/post Returns POST data. https://httpbin.org/put Returns PUT data. https://httpbin.org/delete Returns DELETE data https://httpbin.org/gzip Returns gzip-encoded data. https://httpbin.org/status/:code Returns given HTTP Status code. https://httpbin.org/response-headers?key=val Returns given response headers. https://httpbin.org/redirect/:n 302 Redirects n times. https://httpbin.org/relative-redirect/:n 302 Relative redirects n times. https://httpbin.org/cookies Returns cookie data. https://httpbin.org/cookies/set/:name/:value Sets a simple cookie. https://httpbin.org/basic-auth/:user/:passwd Challenges HTTPBasic Auth. https://httpbin.org/hidden-basic-auth/:user/:passwd 404'd BasicAuth. https://httpbin.org/digest-auth/:qop/:user/:passwd Challenges HTTP Digest Auth. https://httpbin.org/stream/:n Streams n–100 lines. https://httpbin.org/delay/:n Delays responding for n–10 seconds.

如果你需要或想要一个简单的HTTP服务器与以下:

是否可以在本地运行或在与公共Internet密封的网络中运行 有基本的认证吗 处理POST请求

我在PyPI上已有的出色的SimpleHTTPAuthServer之上构建了一个。这增加了POST请求的处理: https://github.com/arielampol/SimpleHTTPAuthServerWithPOST

否则，所有其他公开可用的选项都已经很好很健壮了。

一些在线httpbin:

https://httpbin.org/ https://httpbingo.org/ https://quic.aiortc.org/httpbin/

获取客户端ip，端口，ua..

http://ifconfig.io/

获取客户端ip, isp

https://www.cip.cc/

http://requestb.in类似于前面提到的工具，也有一个非常漂亮的UI。

RequestBin为您提供了一个URL，该URL将收集向它发出的请求，并让您以一种人性化的方式检查它们。 使用RequestBin查看HTTP客户端发送的内容或检查和调试webhook请求。

虽然它已于2018年3月21日停产。

由于持续的滥用，我们已经停止了RequestBin的公开托管版本，这使得它很难保持站点的可靠运行。请参阅有关设置自己的自托管实例的说明。

https://www.mockable.io。它有很好的功能，无需登录就可以获得端点(24小时临时帐户)