Get an API key.

The hosted production API is in private beta with a small group of design partners. The sandbox is fully open — try the protocol end-to-end without an account, then join the waitlist when you're ready for production keys.

Run it now — no account needed

The public sandbox runs the same protocol pipeline as production. Same Authorization Boundary. Same signing. Receipts are signed with the published sandbox key — verifiable offline.

Open the sandbox

Production access — join the waitlist

Production keys (epk_live_*) are issued case-by-case during the beta. Tell us about your use case and we'll get back inside a week.

Request access

What you get during the beta

• Unlimited test mode against the public sandbox — every example on the site, your CI tests, integration smoke tests.
• SDKs (TypeScript shipping; Python, Go, Rust on the waitlist) — free with an API key.
• Standalone receipt verifier at /verify — confirms any sandbox receipt offline.
• Direct line to the team via the design-partner Slack once you're in the production beta.

Already in the beta? Sign in at /login.