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Full detail: Where this data comes from
API Evangelist profile of Atomic — the connected-banking infrastructure for income, payroll, and merchant data.
Atomic's user-permissioned APIs link consumers to thousands of payroll providers, gig platforms, employers, and merchants, then read or update that data in real time. Core use cases include direct-deposit switching, paycheck-linked income and employment verification, tax-document retrieval, and card-on-file / subscription management.
| API | Description | Documentation |
|---|---|---|
| Atomic Deposit API | Direct-deposit switching across thousands of payroll providers. | Docs |
| Atomic Verify API | Instant income and employment verification. | Docs |
| Atomic PayLink API | Card-on-file updating and subscription management across merchants. | Docs |
| Atomic Tax API | W-2 / 1099 document retrieval and refund-advance enablement. | Docs |
| Atomic Authentication API | StandardAuth, TrueAuth, and CoAuth for permissioned third-party access. | Docs |
| Atomic Webhooks API | CloudEvents-formatted task, company, and continuous-access events. | Docs |
| Atomic Transact SDK | Web, iOS, Android, React Native, Flutter, and Capacitor client SDKs. | Docs |
The REST API at https://api.atomicfi.com (sandbox: https://sandbox-api.atomicfi.com) supports two authentication modes:
- API key / secret via
x-api-keyandx-api-secretheaders for server-to-server calls. - Access token via
x-public-tokenfor Transact SDK initialization.
All Transact SDKs live under the atomicfi GitHub organization:
- atomic-transact-javascript
- atomic-transact-ios
- atomic-transact-android-public
- atomic-transact-react-native
- atomic-transact-flutter
- atomic-transact-capacitor
- helium — starter project for building a custom UI on Atomic's API.
- Website: https://atomic.financial/
- Documentation: https://docs.atomicfi.com/
- API Reference: https://docs.atomicfi.com/reference/api
- Console / SignUp: https://console.atomicfi.com/
- GitHub: https://github.com/atomicfi
- LinkedIn: https://www.linkedin.com/company/atomic-fi/
- YouTube: https://www.youtube.com/@atomic.financial
- Blog: https://atomic.financial/insights/
- Help Center: https://atomic.financial/help-center/
This profile is maintained by Kin Lane, API Evangelist.