Manual Client Patching Information

If you're trying to use an older native version of the client, you might need to manually create a custom core.asar file to interface with the older module APIs Discord uses.
This isn't a step-by-step guide, and Discord may have moved some things around on very old clients, but TL;DR:

Underapp/mainScreen.js, under the will-navigate event, please make sure the following domain origins are allowlisted:

WEBAPP_ENDPOINT (default) or https://discordapp.gay/
https://accounts.google.com/
https://github.com/
https://linustechtips.cloudflareaccess.com/

You must, must,must do the above steps if you are manually patching your core.asar or your app will be broken and you will be sad. This is required to allow Cloudflare Access to work. That said, extremely old client hosts (idk 2017 or earlier?) had no such security protections in place at the time. But please check before you build your core.asar!

Replacing the web app URL (Strongly recommended): Replace https://discord.com with https://discordapp.gay under the getWebappEndpoint function. This is not strictly required as you could pass this through using WEBAPP_ENDPOINT in your settings.json, but it's definitely recommended if you only intend to use this client with discordapp.gay.

Disabling Sentry (recommended): In common/crashReporterSetup.js, you should at minimum stub out several functions to disable Sentry, and remove any non-exported functions and any imports from Sentry, etc. This will prevent crash logs from being sent to Discord.

exports.init should do nothing.
exports.isInitialized should return true
exports.getGlobalSentry should either do nothing or return null.

Also,exports.metadata should be an empty object {}. These values might have slightly different names on very old Discord hosts, so do whatever makes sense to avoid Sentry being initialized.

3rd-party Client

Official endpoint

If you have a 3rd-party client or plugin that can accept custom Discord endpoints, you can specify our endpoints to interface with discordapp.gay

Gateway:wss://gateway.discordapp.gay
API Host: https://mobile.discordapp.gay (Registration disabled on mobile/bot endpoints. You can also use https://discordapp.gay if your app is Cloudflare Access-aware)
CDN Host: https://cdn.discordapp.gay
Media Proxy: https://media.discordapp.gay