I'm using something I wrote for work. Basic steps: - Create and trust a CA - Issue SSL for api.slack.com - Deploy something like https://github.com/chimurai/

I'm using something I wrote for work. Basic steps: - Create and trust a CA - Issue SSL for api.slack.com - Deploy something like https://github.com/chimurai/http-proxy-middleware/issues/97 https://github.com/chimurai/http-proxy-middleware/issues/97 with your code to modify the response body - Strip HPKP headers, if present - Strip CAA in DNS, if present