licensing & activation, minus the plumbing

License the software you sell, in an afternoon.

Issue keys, lock them to machines, revoke or reset in one click. One container, offline-capable, free to self-host.

~65 MB RAM · ~250 MB image · offline-first · SQLite built in

free to use · v1.0.0-rc · star on github · sponsor

deploy → issue → activate

# deploy
$ docker run -d -p 8080:8080 \
    -v ./data:/data \
    -e MMK_ADMIN_TOKEN=... \
    ghcr.io/maxing-tech/minmaxkey:1.0.0-rc

# issue a key
$ mmk-admin licenses issue 1 1 --email [email protected]
9TMC-5TS9-0MKQ-VS8A-87Q0

# activate (in your app)
$ mmk activate --key 9TMC-5TS9-0MKQ-VS8A-87Q0
{"status":"active","offline_token":"eyJ..."}

the whole loop

Two directions, one server

── the money loop (server-to-server) ─────────────────────────────

  STRIPE ──checkout──▶ MINMAXKEY ──webhook──▶ YOUR BACKEND
                           │
                 key emailed to buyer


── the runtime (customer's machine) ──────────────────────────────

  YOUR APP ──activate──▶ MINMAXKEY
      ▲                      │
      │     signed token     │
      └──────────────────────┘
      verifies locally · works offline

Webhooks are server-to-server. The SDK runs inside your app. Full walkthrough →

run it your way

Deploy, click, or script

01

Docker

$ docker run -d \
  -p 8080:8080 \
  -v ./data:/data \
  ghcr.io/maxing-tech/ \
    minmaxkey:1.0.0-rc

One container. SQLite inside. Done.

02

Dashboard

$ open :8080/admin

create product
create license type
issue key → done

Point and click. First key in 3 steps.

03

CLI

$ mmk-admin licenses \
    issue 1 1 \
    --email [email protected]
9TMC-5TS9-0MKQ-VS8A-87Q0

Script it: issue on payment, revoke on refund.

what you get

Everything you need, nothing you don't

✓

Hardware-bound seats

Bind keys to machine fingerprints. Per-type seat limits.

✓

Offline-first tokens

Ed25519-signed JWTs verified locally. No network on launch.

✓

Webhooks

Signed events with retries and a delivery log.

✓

Stripe money loop

Buy → key emailed. Refund → revoked. Subscriptions renew.

✓

3 SDKs + integration kit

Python, TypeScript, Go. Copy-paste recipes for Electron, Tauri, Unity, Godot.

✓

SQLite → Postgres

Zero-config start. One env var to scale up.

honest comparison

MinMaxKey vs keygen.sh

	MinMaxKey	keygen.sh
runtime	✓ one container, ~65 MB RAM	✗ Rails + Postgres + Redis + workers
setup	✓ docker run, 2 minutes	✗ multi-service orchestration
offline	✓ Ed25519 tokens, built in	✗ enterprise tier only
complexity	✓ 4 concepts, learnable in an afternoon	✗ full platform to administer
pricing	✓ free, self-hosted	✗ per monthly active license

keygen.sh is a good product and an inspiration. We compete on simplicity, footprint, and price — not feature count.

integration kit

Drop-in code for your stack

Copy a file, paste your config, gate your app. Recipes for every major indie stack.

Electron

import { setupLicensing }
  from "./license"
licensing.isLicensed()

Tauri

import { MMK } from "./mmk"
client.ensureValid()

Unity / Godot

MmkLicense.Check()
// Go binary sidecar