IMPORTANTIf you’re starting a new integration, follow the current connectivity guides for the most up-to-date instructions and best practices.
Integration Approaches
Your use case and technology determines which method of integration you should use. Use the following table to decide which integration method is the best for you.Available Guides
PREREQUISITESBefore following any of these guides, ensure you have:
- Signed up for Platform API access and obtained your development API keys from the MX Dashboard
- Retrieved your
client_idandapi_keyfor authentication - Whitelisted your IP addresses
- Configured all requests to use HTTPS with TLSv1.2 encryption or higher
Connect Widget Integrations
These guides use the Connect Widget to simplify the integration process with pre-built UI components and automatic connection management:- Configure Your Connect Widget — Configure widget URL requests, widget options, and data aggregation settings for different use cases
- Fetch Account and Routing Numbers with Connect — Retrieve account and routing numbers for ACH transfers
- Fetch Account and Transaction Data with Connect — Retrieve up to 90 days of transaction history
API-Only Integrations
These guides provide complete control over the user experience by using API endpoints directly:- Fetch Account Owner Data — Retrieve Account Owner Identification (AOI) data
- Fetch Account and Routing Numbers with the API — Retrieve account and routing numbers for ACH transfers
- Fetch Account and Transaction Data with the API — Retrieve up to 90 days of transaction history
- Fetch Extended Transaction Data — Retrieve up to 24 months of transaction history
- Fetch Real Time Balance Data — Get current account balances without transaction data
- Fetch Statements — Download account statements in PDF format
Use Case Guides
These guides show how to build specific business use cases using MX connectivity products:Deposit Account Opening
Verify identity, link funding accounts, and gather financial information when opening new deposit accounts:- Connect Widget Integration — Use the Connect Widget to capture credentials and manage connections
- API-Only Integration — Build a custom solution using API endpoints directly
Payment Verification
Verify account details, balances, and owner information before initiating payments via ACH, RTP, or FedNow:- Connect Widget Integration — Use the Connect Widget to gather credentials and fetch payment verification data
- API-Only Integration — Build a custom solution using API endpoints directly