Inter — Open Finance API Integration & Protocol Engineering

OpenData / OpenFinance compliant integration: accounts, reconciliation, international remittance, investments & cards
Starting at $300
OpenFinance · OpenBanking · OpenData · Global

Securely connect Inter's financial capabilities to your products

We provide deliverables for compliant integrations: account binding and authorization, transaction histories and reconciliation exports, cross-border payments, card and asset synchronization, with runnable API source code and documentation in multiple languages.

Account binding & session management — Implement user binding, token retrieval and refresh, session lifecycle control and security strategies.
Transactions & reconciliation API — Retrieve transactions by date range, type and status, export to JSON/CSV/Excel, with pagination and incremental pulls.
Cross-border payments & FX — Support cross-border transfers to 60+ countries, rate retrieval, payment status tracking, and reconciliation receipts.
Investments & assets syncing — Broker-level history, holdings and mark-to-market, supports recurring investments and ETF trades.

Deliverables & Sample Outputs

Standard Deliverables

  • OpenAPI / Swagger interface specifications
  • Protocol & authorization flow report (OAuth2, Token, Webhook signatures)
  • Runnable backend code (Node.js / Python / Go optional) with SDK sample
  • Automation test scripts and Postman collections
  • Compliance guidance (data minimization, logging, consent) and privacy considerations

Sample Interface: Transaction Reconciliation (pseudo-code)

# POST /api/v1/inter/statement
# Headers: Authorization: Bearer <ACCESS_TOKEN>
{
  "account_id": "user@inter",
  "from_date": "2025-10-01",
  "to_date": "2025-10-31",
  "currency": "USD",
  "type": "ALL",
  "page": 1,
  "page_size": 200
}

Response: {
  "status": "OK",
  "total": 124,
  "transactions": [
    {"id":"TXN20251001","date":"2025-10-01","amount":-29.99,"merchant":"STREAM SERVICE","currency":"USD","status":"SETTLED"},
    {"id":"TXN20251003","date":"2025-10-03","amount":1500.00,"merchant":"PAYROLL","currency":"USD","status":"SETTLED"}
  ]
}

Use Case Snapshot

Account consolidation, batch reconciliation, cross-border payments, wallet & card management, and investment data aggregation for a SaaS platform.

Core Benefits

  • Compliance-first: aligned with local regulations and privacy guidelines
  • Production-ready: OpenAPI, code samples, and automated tests
  • Multi-language support: English / Spanish / Portuguese / Chinese
  • Extensible: from single endpoints to enterprise API gateway with audit trails

Quick Integration Guide

  1. Provide target app name and use cases (e.g., reconciliation, wallet, remittance).
  2. Confirm authorization method: public API, partner credentials, or testing environment.
  3. We perform protocol analysis and provide secure access design and estimates (2-5 days).
  4. Develop runnable API and SDK (3-10 days), deliver OpenAPI docs and test suites.
  5. Support deployment and go-live with optional ongoing maintenance and security audits.

About Us

We are a boutique firm focused on mobile and financial API integrations. Our team has extensive experience in payment, banking, and compliance, delivering compliant, scalable API solutions with OpenData/OpenFinance integration.

  • Supports Android & iOS protocol analysis and integration
  • Deliver OpenAPI docs, SDK samples, and automated tests
  • Compliance guidance and privacy-by-design considerations
  • Transparent pricing: starting at $300; options for post-delivery payment

Contact Us

To request a quote or submit your target app name and integration needs, please visit our contact page:

Visit contact page

📱 Inter Original App Description (Appendix, expanded)

Below is the original app description provided by the user (unmodified), for technical assessment and requirement identification:

appPackageId: br.com.intermedium

Inter's banking super app helps you simplify your financial life with a full range of banking solutions—all in one app.
Spend, invest in stocks, save with gift cards, and send money abroad directly from your phone.

Take control of your finances in a modern way and access services designed for your lifestyle.

Why choose Inter?

- Trusted by millions: More than 40 million people use Inter.
- Your money is FDIC insured.
- Gift cards with cashback: Explore offers and deals from top brands.
- Physical & virtual debit card
- Inter Passport Credit Card
- Invest in stocks & ETFs from as little as $5.
- Global money transfers : send money to over 60 countries, including Mexico, Colombia, Brazil, El Salvador, Guatemala, Honduras, Ecuador.

And more:

- 24/7 multilingual support: English, Spanish, and Portuguese.
- Inter LOOP rewards program: Earn points to exchange for gift cards and other perks.
- Get eSIMS for your mobile data needs.

Open your digital account and access all services in one place.

DISCLAIMER:

INTER & CO PAYMENTS, INC., doing business as Inter (“Inter”), is a financial technology company, a registered money services business (MSB) and a licensed money transmitter, not a bank (NMLS ID #907330). Massachusetts Foreign Transmittal Agency (License #FT114374-100). Rhode Island Currency Transmitter (License # 20203960CT). Click here to access our NMLS licenses.

Banking services are provided by Community Federal Savings Bank ("CFSB"), Member FDIC and deposits are held by CFSB and Wells Fargo Bank, Members FDIC. Inter is not a depository institution, deposits held at CFSB and Wells Fargo are not eligible for FDIC insurance.

The Inter US Checking account is provided by Continental Bank, Member FDIC. Inter US Checking accounts are FDIC-insured up to US$250,000. Inter US Checking account funds are eligible for FDIC insurance up to the allowable limit through Continental Bank, Member FDIC, and other program banks. Coverage is subject to aggregation of all of each account holder's funds held on deposit at Continental Bank or at each of its program banks. Funds generated through Inter's payment processing services are generally available in the Inter US Checking account balance immediately after a payment is processed. Fund availability times may vary due to technical issues. Inter is not a bank. Inter US Checking accounts do not provide monthly paper statements and do not issue physical paper checks. Inter US Checking accounts are not interest-bearing accounts.

FDIC deposit insurance coverage only protects against the failure of an FDIC-insured deposit institution. If you have an Inter US Checking account, up to US$250,000 of your balance may be covered by FDIC insurance on a pass through basis through Continental Bank, Member FDIC, subject to aggregation of the account holder's funds held at Continental Bank and if certain conditions have been met.

Mortgage services are provided by Inter US Finance, LLC (NMLS ID #1161874), an affiliate of Inter & Co Payments, Inc.

Securities brokerage services are provided by Inter&Co Securities LLC, Member FINRA/SIPC , an affiliate of Inter & Co Payments, Inc. and a wholly-owned subsidiary of Inter&Co US Holding. View important information and disclosures here .

If you have any questions or concerns regarding any transaction, please write to us at 501 Brickell Key Drive, Suite 202, Miami, FL 33131, or by email at help@inter.co or by calling us at 1-888-305-7264.

The Inter US Mastercard® Credit Card is issued by Continental Bank, Member FDIC, pursuant to alicense from Mastercard International Incorporated and may be used wherever Mastercard debit is accepted. The Inter US Mastercard® Credit Card is issued by Continental Bank, Member FDIC, pursuant to a license from Mastercard International Incorporated, and may be used wherever Mastercard is accepted. For more information about the Inter US Mastercard credit and debit cards please see the applicable cardholder agreements.

Executive Summary (for technical assessment)

Inter is a comprehensive financial app designed for individuals and small businesses, offering account management, cards (physical/virtual), investments, gift cards with cashback, and cross-border remittance to 60+ countries. The app supports multilingual customer service and partnerships with banks and brokers for custody and settlement. The information above is provided for evaluating feasible interfaces and compliance boundaries.