Build with Nucleus
Core banking APIs, product guides and integration contracts for financial institutions.
Nucleus manages customer relationships, accounts, credit, payments and the work needed to run a financial institution. Start with the product you use, then choose its contract and the authority your integration needs.
Choose your starting point
Configure an institution, work with customers and accounts, and follow a banking day through approvals, posting and close.
Prepare a payment, approve it, follow the external outcome and reconcile it using an institution-named connection.
Find the boundary between each separately licensed product, its dashboard and the system that owns its financial records.
Build staff, customer, corporate or assisted experiences on the same authority and accounting rules.
Choose the right contract
| Reference | What you can establish |
|---|---|
| Core source snapshot | Methods, paths and source-generated request/response schemas. Review the exact server version and institution qualification before use |
| Local banking profile | Selected local NGN/NPS Transfer and consent-bound read contracts with separate LOCAL_SYNTHETIC evidence |
| Add-on guide | Product scope, integration ownership and required contracts. Availability depends on the selected product and institution |
The core snapshot contains 771 paths and 1,142 operations. Its structure validates, while whole-core runtime conformance and provider qualification require separate evidence. The local profile overlaps that snapshot and has a narrower evidence boundary.
Follow a complete workflow
Keep an instruction’s identity from the first request through approval, execution and recovery. An accepted command, posted journal, settled payment and reconciled position describe different facts. If an external response is lost, enquire using the original identity and follow the institution’s recovery process.
Authentication, events and environment selection apply across the guides. Institutional configuration determines enabled products, countries, currencies, channels and responsibilities.