SunLicenseYour Garry's Mod addon, on the servers that paid.
Each buyer gets a key, checked server side with GMod's own HTTP.
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Coding with an AI agent? Paste one prompt- Lua
- Garry's Mod
- Tebex
- Stripe
- Gumroad
- Payhip
- Discord
Built for how you sell.
One Lua file
Async, server side, with GMod's own HTTP.
sunlicense.luaServers per license
One server or five, by id or IP.
TOO_MANY_IPSRevoke or blacklist
A key, a server IP or a range.
Sell where you like
Tebex, Stripe, Gumroad, Payhip and more.
Buyer roles in Discord
Claim with the purchase email; revoke removes it.
Sentinel watches for sharing
Flags keys hopping from server to server.
Lite & StandardLive before your next release.
- 1Create a free account
- 2Connect your store
- 3Check it on map load
local SunLicense = include("myaddon/sunlicense.lua")
local licenseVar = CreateConVar("myaddon_license", "", FCVAR_ARCHIVE + FCVAR_PROTECTED)
hook.Add("InitPostEntity", "MyAddon.License", function()
local client = SunLicense.new({ baseUrl = "https://api.sunlicense.com", token = MYADDON.ApiKey })
client:validate(licenseVar:GetString(), { host = MYADDON.ServerId() }, function(ok, status, body)
if ok then
MsgC(Color(120, 210, 140), "[MyAddon] License valid, loading\n")
MYADDON.Start()
elseif status == 400 then
MsgC(Color(255, 128, 128), "[MyAddon] License denied: ", body:match('"code":"([%w_]+)"') or "?", "\n")
else
MYADDON.Start() -- no answer is not a no: keep running
end
end)
end)Questions, answered.
How do I protect a paid Garry's Mod addon from leaks?
Addons ship as Lua, so anyone determined can read and edit a check, and no licensing service changes that. A key per buyer gives you control instead: you see which servers use each key, a shared or leaked key can be revoked or its servers blacklisted, and paying servers are never affected. Obfuscating the check makes removing it more work.
Does the Lua SDK work in Garry's Mod?
Yes. sunlicense.lua detects Garry's Mod and sends the check with GMod's HTTP function, asynchronously, so the server doesn't freeze. Run it server side only: the API key it uses can only validate licenses, but it has no business in files sent to players.
Which stores can issue keys automatically?
Tebex, Stripe, Gumroad, Payhip, Lemon Squeezy, Ko-fi, itch.io, WooCommerce and a few more connect directly, and most of them revoke the key on a refund. For anywhere else, issue keys from the dashboard, the sunlicense CLI or the API.
What does a buyer do when they move host?
They reset the old server's machine slot themselves with My licenses in your Discord, or in the customer portal (Lite and Standard), once a day by default. With an IP limit, an address that hasn't been used for 30 days frees its slot by itself, and you can free one any time on the license page.