Simple pricing
Pay when a user gets their first site credential. Pay a small MAU fee only when they come back.
Unlimited local verification on your servers — no per-check fee. lemma.id is only in the loop when a passkey is required to issue or renew a site credential.
How billing works
Each user gets a site-specific credential (a lemma with their PPID as subject). You are billed on issuance and on monthly activity — not on every login or verification.
Initial site issuance
$0.35 / user / site
Charged once when a user receives their first site credential for your site — the passkey-gated issuance that binds their PPID to your domain.
Monthly active user (MAU)
$0.01 / user / month
Charged for each month a user is active on your site, starting the calendar month after their first site credential was issued. Inactive months are not billed.
Local verification
Free
Your site validates credentials locally with the SDK — signature, expiry, and revocation checks. No server call to lemma.id and no per-check fee, no matter how many times the user presents the credential.
Site integration
Included
API keys, developer dashboard, site-block controls, SDK, and hosted platform features at no additional platform fee.
Billing rules
- First issuance ($0.35): billed when lemma.id issues the user's first site-bound credential for your site (passkey required).
- MAU ($0.01): billed for each calendar month the user is active after the month of their first issuance. The issuance month itself has no MAU charge.
- Active user: a user who passkey-renews their site credential during that month (monthly continuity check).
- Local checks: unlimited presentations and verifications on your infrastructure — never metered.
- Per site: each relying site is billed independently for its own users (pairwise PPIDs).
Example: 1,000 new users in January, 600 return in February
January: 1,000 × $0.35 = $350 (initial issuance). No MAU charges — first month after issuance is excluded.
February: 600 returning active users × $0.01 = $6.00 MAU. Plus any new users who join in February at $0.35 each.
All year: A user who logs in daily but renews once per month still counts as one MAU that month — not 30 verification events like SMS OTP.