Your starting code should look something like this.
local httpService = game:GetService("HttpService")
httpService:PostAsync("https://discord.com/api/webhooks/{WEBHOOK_ID}/{WEBHOOK_TOKEN}",
httpService:JSONEncode({
content = "Hello, world!"
})
)
To convert to Hooker. Just swap out discord.com with e621.tech.
local httpService = game:GetService("HttpService")
httpService:PostAsync("https://e621.tech/api/webhooks/{WEBHOOK_ID}/{WEBHOOK_TOKEN}",
httpService:JSONEncode({
content = "Hello, world!"
})
)
And now you are using Hooker.