Provider Integrations

Infrarails is designed to support financial applications that depend on external infrastructure providers.

Provider integrations allow applications to coordinate operations involving banking infrastructure, payment processing, account services, and other financial technology systems.

The internal ledger remains responsible for representing the application's accounting records.

Understanding provider integrations

Financial applications often depend on external providers for operations that cannot be performed by an internal ledger alone.

For example, an application may require an authorized financial institution or payment service provider to execute an external payment.

Infrarails separates these external operations from the internal accounting model.

This distinction allows applications to track both the provider's operational state and the corresponding financial records.

Integration architecture

flowchart TD
    A["Application"] --> B["Financial Workflow"]
    B --> C["Infrarails Ledger"]
    B --> D["Provider Integration"]
    D --> E["External Financial Provider"]
    E --> F["Provider Response / Event"]
    F --> D
    D --> G["Reconciliation"]
    C --> G

This diagram represents a conceptual integration architecture. Actual workflows depend on the supported provider and operation.

Provider responsibilities

An external provider may be responsible for one or more services, such as:

• Account provisioning.
• Payment initiation and execution.
• Payment settlement.
• Bank account information.
• Currency conversion.
• Transaction notifications.
• Regulatory or compliance-related services.

The capabilities available through Infrarails depend on the provider integration and the applicable service arrangement.

Internal and external accounts

Infrarails distinguishes between internal ledger accounts and externally maintained provider accounts.

An internal account represents a financial position within the ledger.

An external account represents a resource maintained by a connected provider.

These resources may be linked through provider identifiers.

Provider account mapping

Depending on the integration, an internal account may be associated with:

The exact mapping fields depend on the provider and API implementation.

Provider transaction processing

A provider operation and its corresponding ledger transaction may have different processing states.

For example:

1. An application initiates a payment workflow.
2. The provider receives the instruction.
3. The provider reports an accepted or processing state.
4. The internal accounting workflow records the relevant transaction.
5. The provider reports further processing results.
6. The application reconciles the external outcome with the internal ledger.

Provider acceptance does not necessarily mean final settlement.

Applications must interpret each provider's statuses according to its documented contract.

Provider identifiers

Preserve identifiers returned by external providers.

These may be needed for:

• Transaction tracking.
• Payment investigations.
• Reconciliation.
• Customer support.
• Duplicate-event detection.
• Operational reporting.

Provider identifiers should remain distinct from Infrarails transaction and account identifiers.

Integration failures

External providers may return validation errors, temporary failures, or uncertain processing outcomes.

A failed network request does not always establish that the provider rejected the underlying operation.

Applications should verify the provider's operation state before submitting another request.

Security considerations

Provider integrations may involve sensitive credentials and financial information.

Recommended controls include:

• Secure credential storage.
• Restricted access to provider configuration.
• Authenticated communication.
• Validation of incoming provider messages.
• Protection of account and beneficiary information.
• Audit logging.
• Credential rotation procedures.

Regulatory considerations

Infrarails provides technology infrastructure and does not itself constitute a regulated banking or payment service.

Where applicable, regulated services are provided by appropriately authorized third-party institutions.

Best practices

• Keep provider operations separate from ledger accounting.
• Preserve both internal and external identifiers.
• Avoid assuming that provider and ledger statuses are equivalent.
• Validate incoming provider data.
• Implement duplicate-event protection.
• Reconcile financial records regularly.
• Handle uncertain provider outcomes explicitly.
• Follow provider-specific authentication and operational requirements.

Next steps

Continue with Webhooks to understand how asynchronous events can be processed reliably.