SubscriberAPI.io
New Custom Field Groups

Subscription Access & Licensing that just works

Ship subscribers, plans, license keys, usage meters, and unlimited custom fields in hours—not weeks.

~85% margin
lean infra
99.98% uptime
status monitored
Minutes to integrate
drop-in checks
Quick API
Docs
curl -X POST https://api.subscriberapi.io/v1/subscribers \
  -H "Authorization: Bearer <token>" -H "Content-Type: application/json" \
  -d '{"email":"dev@example.com","name":"Ada"}'
Latest license
key_9fY...A2
active
This month
projects.create: 3 / 10
Custom Fields Meters Licensing
Subscribers
1,284
+4.3% this week
Active licenses
3,912
incl. device-bound
Usage (projects.create)
30%
Field groups
7
Unlimited fields

Create a subscriber

POST /v1/subscribers
{"email":"dev@example.com","name":"Ada"}

Add metadata and field groups any time—no migrations needed.

Record usage

POST /v1/meters/record
{"user_id":"sub_123","meter":"projects.create","amount":1}

Power quota bars & billing with meter summaries in your dashboard.

Plans & Seats

Tiered plans, per-seat limits, feature flags, and trials—exposed as claims.

Unlimited Custom Fields

Extend subscriber & plan models instantly with typed fields and groups.

Secure by Default

OAuth2/JWT, key rotation, HMAC webhooks, and audit logs. SOC2/GDPR-ready practices.

SaaS & Web Apps

Gate features per plan; add org roles and per-seat checks.

Desktop & Plugins

License issuance & activation, device binding, offline verification.

APIs & Marketplaces

Scoped keys, route quotas, and webhook-driven upgrades.

Start gating features in under an hour.