Colfax Banking Company API integration (OpenBanking & data export)

Deliverables checklist

• OpenAPI 3.1 specification for every exposed endpoint
• Protocol & auth flow report (Apiture xpress OAuth, device binding, MFA, biometric handshake)
• Runnable reference implementation in Python and Node.js (login, balance, statement, RDC status)
• Postman collection plus a pytest / Jest test harness with sandbox fixtures
• Compliance memo covering CFPB Section 1033 framing, FDIC vendor-management notes, and data minimisation guidance

Feature modules in scope

• Accounts & balances — checking, savings, loans, lines of credit
• Transaction history with the same date / amount / check-number filters available in-app
• Internal transfers between linked Colfax accounts
• Bill Pay — payee list, recent and scheduled payments (read first, write on request)
• Mobile remote deposit capture (RDC) submission and status feed
• Branch & ATM locator powered by the GPS-backed directory
• Biometric / Touch ID / Face ID re-auth tokens for native client wrappers

1. QuickBooks / Xero reconciliation feed

Small businesses that bank with Colfax often keep their books in QuickBooks Online or Xero. We pull normalized transactions and Bill Pay outflows through the /accounts/{id}/transactions endpoint and push them into the accounting system using the standard OFX layout, eliminating manual statement uploads. This is a textbook OpenBanking flow under the CFPB's personal financial data rights framing.

2. Treasury cash-position dashboard

Multi-entity owners with several Colfax accounts get a real-time consolidated balance view. The integration polls /accounts/balances, joins it with intraday RDC submissions, and feeds a Looker, Metabase, or Power BI dashboard. The dashboard becomes the daily morning report instead of someone logging in branch by branch.

3. Lending pre-qualification with statement export

Lenders need 12 to 24 months of bank statements when underwriting. With consumer authorization we use the statement-export pipeline (PDF + structured JSON) so the borrower no longer has to email screenshots. The 24-month window matches the CFPB's Section 1033 transaction-history baseline.

4. AP automation with Bill Pay write-back

For commercial customers we expose Bill Pay as a write API: an ERP can schedule a payment, watch its status, and reconcile the resulting transaction. This turns the in-app Bill Pay screen into a programmable accounts-payable rail that other systems can drive.

5. Fraud & KYC enrichment

Behavioural signals — biometric re-auth events, RDC capture metadata, geo of the branch lookup — are streamed to a fraud platform such as Sift or Alloy. Correlating these signals with transaction patterns gives a much earlier warning than running anomaly detection on the cleared ledger alone.

Login & token refresh

POST /api/v1/colfax/auth/login
Content-Type: application/json

{
  "username": "demo_user",
  "password": "********",
  "device_id": "ios-7C9F-…",
  "biometric_assertion": null
}

200 OK
{
  "access_token": "eyJhbGciOi…",
  "refresh_token": "rt_4f9b…",
  "expires_in": 900,
  "mfa_required": false,
  "device_bound": true
}

Statement / transaction search

POST /api/v1/colfax/accounts/{account_id}/transactions
Authorization: Bearer <ACCESS_TOKEN>
Content-Type: application/json

{
  "from_date": "2026-04-01",
  "to_date":   "2026-04-30",
  "min_amount": 25.00,
  "check_number": null,
  "page": 1,
  "page_size": 100
}

200 OK
{
  "account_id": "chk_001",
  "currency": "USD",
  "results": [
    {"posted_at":"2026-04-12T14:08:00Z","amount":-128.55,
     "type":"DEBIT_CARD","description":"WALMART #0271",
     "running_balance":3421.10}
  ],
  "page": 1,
  "has_more": true
}

Remote deposit webhook

POST https://your-app.example.com/webhooks/colfax/rdc
X-Signature: sha256=…
Content-Type: application/json

{
  "event": "rdc.status_changed",
  "deposit_id": "rdc_8a2…",
  "account_id": "chk_001",
  "status": "ACCEPTED",
  "amount": 1450.00,
  "submitted_at": "2026-05-09T18:42:11Z",
  "available_at": "2026-05-12T13:00:00Z"
}

# Errors are returned as RFC 7807 problem+json:
# 401 invalid_token, 409 duplicate_check, 422 image_unreadable

Regulatory framing

Colfax Banking Company is FDIC-insured (certificate 8140) and operates under standard US prudential supervision. Our API delivery is framed against the CFPB's Personal Financial Data Rights rulemaking under Section 1033 of the Dodd-Frank Act. The original final rule was issued in October 2024 and became effective on 17 January 2025; the CFPB published an Advance Notice of Proposed Rulemaking in August 2025 that is now reconsidering data-security, fee, and representative-of-the-consumer details, so we track that docket and keep deliverables aligned with the live text.

Where third-party access is involved, integrations follow the FDIC's third-party risk-management expectations and standard GLBA Safeguards-Rule controls (encryption at rest and in transit, access logging, least-privilege role design).

Security controls

• OAuth 2.0 with short-lived access tokens and rotating refresh tokens
• Device binding and biometric assertion replay-protection (Touch ID / Face ID)
• Mutual TLS for server-to-server traffic on the published API surface
• Field-level encryption for the rolling 24-month transaction cache
• Per-consumer consent records and revocation endpoint
• Optional NDA, SOC 2-style control mapping on request

About OpenFinance Lab

We are an independent technical-services studio focused on app interface integration and authorized API integration for fintech, banking, and adjacent verticals. Our engineers come from a mix of US community-bank IT, payment processors, mobile reverse-engineering, and cloud platform teams.

• Apiture xpress, FIS Digital One, Jack Henry Banno, Q2, NCR Terafina protocol families
• Authorized data extraction and consent-driven OpenBanking pipelines
• Custom Python / Node.js / Go SDKs and full pytest / Jest test harnesses
• End-to-end pipeline: protocol analysis → API build → validation → compliance memo
• Source code delivery from $300 — runnable API source plus full documentation; pay after delivery upon satisfaction
• Pay-per-call API billing — access our hosted endpoints and pay only per call, no upfront cost

Contact

For a quote on a Colfax Banking Company integration, or to scope a multi-bank Apiture xpress pipeline, open our contact page:

Contact page

Engagement workflow

1. Scope confirmation — which data domains (balances, transactions, RDC, Bill Pay) and which downstream system.
2. Protocol analysis of the Apiture xpress flow used by the Colfax app (2–5 business days).
3. Build & internal validation against a sandbox or consented account (3–8 business days).
4. Documentation, sample integrations, and a pytest / Jest test pack (1–2 business days).
5. Hand-off and pay-on-acceptance, or switch to pay-per-call billing on our hosted endpoints.

FAQ

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