Atomic UserLink REST API

REST discovered

Details

URL: https://sandbox-api.atomicfi.com
Docs: https://docs.atomicfi.com/reference/api

Authentication

Atomic API key and API secret x-api-key: <credential> + Atomic API key and API secret x-api-secret: <credential> discovered

Atomic API key and API secret compound Get key ↗

Sign in to Atomic Console, then open Settings → Credentials. Create or copy your API Key and API Secret. Atomic docs say server-side API calls use these together in headers x-api-key and x-api-secret. Keep the secret off client devices and out of public code.

Atomic public token for an end user session bearer discovered Get token ↗

x-public-token: <credential>

From your server, call Atomic's POST /access-token endpoint using your API key and secret. The response contains a publicToken, which you then pass to client-side Transact SDK initialization or use in end-user-scoped API requests as x-public-token. Docs state this token defaults to a 24 hour expiry and can be set from 30 minutes to 30 days.