Everything Keylight does to turn a payment into a signed license your app can trust.
Six features that work together — signed leases, device activations, trials, a self-serve portal, refund revocation, and native checkout with the payment provider of your choice. Click any one to dig in.
Works with
Signed license keys for your app
Every Keylight license is an Ed25519-signed lease your app verifies locally — issued automatically when Stripe takes a payment.
Learn more about license keys →Minted on payment
A Stripe payment automatically issues a signed key — no webhook glue to maintain.
Verified offline
Your app ships with the public key and verifies licenses locally, with no runtime server call.
Revocable
Refunds and chargebacks mark the key revoked; the next revalidation rejects it.
Device activation limits
Each key carries an activation cap; activations are tracked per device.
Native Stripe integration
Connect your existing Stripe account once. A completed payment mints a signed license automatically — no webhook handler to write or host.
Learn more about Stripe →Bring your own Stripe
Keylight connects to your existing Stripe account — you keep the customer data and the standard rate.
Automatic issuance
checkout.session.completed mints and delivers a signed license within seconds.
Idempotent by design
Stripe webhook retries never produce duplicate licenses for one purchase.
Lifecycle in sync
Refunds and subscription changes update license state automatically.
Per-device activation limits
Every Keylight license carries an activation cap. Devices are tracked by a hashed fingerprint, and customers manage their own machines.
Learn more about device activations →Activation limit per tier
Each license tier sets how many devices a key may run on — 2, 5, or unlimited, your call.
Hashed device fingerprint
Devices are recognised by an opaque hashed identifier, never by raw hardware data.
Idempotent activation
Relaunching or reinstalling on a known device never consumes an extra slot.
Self-service deactivation
Customers free a slot by removing an old device in the portal — no support ticket.
Built-in free trials
Set a trial length once; the SDK tracks the countdown and reports days remaining. No trial server, no separate trial keys.
Fixed-length trial
Set trialDurationDays once at startup; the SDK runs the evaluation period.
Days-remaining state
licensing.state reports .trial(daysLeft:) so your UI can nudge at the right moment.
No trial backend
The trial runs without a Stripe payment and without a separate trial-key system.
Seamless conversion
When the customer pays, the Stripe webhook issues a real license and the state flips to .licensed.
A self-service customer portal
Customers retrieve their key, see their activated devices, and free a slot themselves — turning the most common support requests into zero-touch actions.
Learn more about the customer portal →Key retrieval
A customer who lost their key gets it back themselves — no email to you.
Device list
Customers see every machine their key is activated on, by friendly name.
Self-service deactivation
Removing an old device frees an activation slot instantly.
Hosted by Keylight
The portal is provided and maintained — nothing to build or host.
Automatic revocation on refund
When Stripe refunds a payment, Keylight marks the license revoked — no manual step, no webhook handler, no orphaned active keys.
Learn more about refund revocation →Refund-triggered
A Stripe charge.refunded event marks the matching license revoked automatically.
Chargeback handling
Disputed charges revoke the key as soon as the dispute is filed.
Signed revoked flag
The revoked state is part of the signed lease — the app trusts it without a database lookup.
Propagates on revalidation
The app picks up revocation on its next periodic online re-check.
How the features fit together
Six features, one loop. Payment in, signed license out, devices tracked, revocation handled, trial enforced.
Payment
Stripe charges your customer. Trials can lead in.
Lease
Keylight mints an Ed25519-signed license, sent to your customer and your app.
Activation
The app activates each device; usage is counted and capped per key.
Lifecycle
Refund? Key revoked automatically. Customer needs help? Self-service portal.
Ready to ship?
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