Integrate in an afternoon

There is nothing to host and nothing to operate. Call the API from the server you already run — four calls at the moments in your app where identity matters.

Get a key for the right environment
For free integration, mint a bi_test_ key with checkout on sandbox.identityinc.io (see the Quickstart). For production traffic, open checkout and pick Builder — that issues a bi_ key against api.identityinc.io. The key appears once; store it on your server.
Call the API from your backend
HTTPS from your server, with the key in an Authorization header. The key never goes into your website, your mobile app, or anything else a user can read. Keep bi_test_ keys on the sandbox host only.
Verify the person, then create the account
Default organizations require approved KYC before free-create. Start person-first KYC (document + face; no OTP), wait for approval, then create the sponsored account with the one-time create token. Contact OTP is a separate, optional path.
Bind and unlock when your rules require it
One call to confirm the user signed (bind), then unlock. Build against the sandbox first; Builder gives you the full API for free on production when you go live (live ID checks are billed by your provider).

const res = await fetch(process.env.BOUND_IDENTITY_URL + "/v1/kyc/start", {
  method: "POST",
  headers: {
    Authorization: "Bearer " + process.env.BOUND_IDENTITY_API_KEY, // server-side only
    "Content-Type": "application/json",
  },
  body: JSON.stringify({}),
});

Running the platform yourself instead? Self-hosting instructions live in the repository README — but you do not need them to go live.

Production signup Developers