Solutions

Solutions for real products, not demos

Gate features, enforce plans, manage licenses, and meter usage across SaaS, desktop, CLI, and marketplaces.

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SaaS & Web Apps

Plans, trials, seats, and feature flags without bespoke logic. Scope tokens by tenant, role, or feature bundle.

Per-seat & per-feature entitlements
Metering & overage protection
Tenant & role claims in JWT

Desktop, Plugins & CLI

Issue license keys, bind to devices, and verify offline with signed tokens and grace windows.

License activation + device binding
Offline verification (exp & signature)
Channel keys (beta, enterprise)

APIs & Marketplaces

API keys, scopes, and per-route rate limits. Webhooks notify you on plan changes and violations.

Scoped API keys + rotation
Route & org-level throttles
Webhooks for usage & upgrades

Typical SaaS request flow

1
Frontend gets a session, backend exchanges for a service token with plan claims.
2
Call /entitlements/check with the action you want to perform.
3
We reply allow/deny and return remaining quota if metered.

curl -H "Authorization: Bearer <token>" \
  https://api.subscriberapi.io/v1/entitlements/check \
  -d '{"user_id":"u_123","action":"projects.create"}'

Desktop / CLI licensing

Activate a key → receive a signed token with device fingerprint claim.
Verify offline: check signature, expiry, and device claim.
Grace windows + heartbeat endpoints for periodic renewal.

GET /v1/licenses/{key}
POST /v1/licenses/activate
POST /v1/tokens/verify

PHP SDK

Drop-in middleware for plan checks & key validation.

Node.js SDK

Express/Fastify helpers for entitlements & rate limits.

Python SDK

Flask/Django decorators and CLI helpers.

Frequently asked

Can I mix per-seat and usage-based billing?

Yes—store seats as entitlements and attach meters for high-cost actions. We’ll enforce both on checks.

Do you support offline desktop apps?

Tokens are signed and time-boxed; you can verify locally and renew when back online.

How do I migrate?

Import your plans/keys through the API. Run in “report-only” mode first, then switch to enforce.

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