> For the complete documentation index, see [llms.txt](https://docs.proxyman.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.proxyman.com/debug-devices/http-clients.md).

# HTTP Clients

Configure Postman, Insomnia, and Paw to send HTTP/HTTPS traffic through Proxyman and troubleshoot certificate errors.

## 1. Problems

Proxyman might not capture requests, or you might get an SSL error, when you send HTTP/HTTPS requests from some HTTP clients, such as [Postman](https://www.postman.com/), [Insomnia Rest](https://insomnia.rest/), and [Paw](https://paw.cloud/).

This page shows how to make them work with Proxyman.

## 2. Postman

1. Open Postman Settings
2. In the General tab -> Uncheck the "SSL certificate verification" checkbox
3. In the Proxy tab -> Check "Use the system proxy" and "Respect `HTTP_PROXY`, `HTTPS_PROXY`, and `NO_PROXY` environment variables".

![Postman Settings, Proxy tab, with Use the system proxy checked](https://1856518738-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-LlPt_6BePnJ3oK3saP1%2Fuploads%2Fz7kUPok6z9HdoDmQSjUx%2FPostman_And_Proxyman.jpg?alt=media\&token=c097e892-bded-437c-be80-967740a39967)

## 3. Insomnia Rest

1. Open Insomnia Preferences -> General tab
2. Uncheck the "Validate certificates" checkbox
3. Check "Enable proxy" and enter `localhost:9090` in the HTTP Proxy and HTTPS Proxy text boxes.

![Insomnia Preferences with Validate certificates unchecked and the proxy set to localhost:9090](https://1856518738-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-LlPt_6BePnJ3oK3saP1%2Fuploads%2FkTUuKGNgsLH9j7dpyAvS%2FInsomnia_And_Proxyman.jpg?alt=media\&token=5c0467bc-5e92-497c-b904-5bf73cbdb7b0)

## 4. Paw

By default, the Paw app uses the system proxy configuration, so Proxyman works out of the box.

If you don't see any Paw traffic in Proxyman, please double-check:

1. Open Paw Preferences.
2. In the Network tab, make sure Proxy is set to System Proxy Configuration.

![Paw Preferences, Network tab, with Proxy set to System Proxy Configuration](https://1856518738-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-LlPt_6BePnJ3oK3saP1%2Fuploads%2FHAVvbBwQaMbeKs0unnZX%2FPaw_Proxyman.jpg?alt=media\&token=f2b4281c-73d8-473c-9c7f-9ac10789001a)