The industry's broadest financial data connectivity API. 12,000+ institutions, normalized data, real-time access. From first API call to production in under a day.
{
"accounts": [{
"account_id": "acc_8nK3...",
"type": "checking",
"name": "Primary Checking",
"balance": {
"current": 12847.52,
"available": 11200.00,
"currency": "USD"
},
"institution": {
"id": "ins_chase",
"name": "Chase"
}
}],
"request_id": "req_4Jk9..."
}How It Works
Your user clicks "Link Account." NexaLink's branded or white-label UI handles institution selection and credential entry.
We handle OAuth, MFA, credential rotation, and token management. 12,000+ institution integrations maintained by us, not you.
Normalized account, balance, and transaction data delivered via webhook or polling. Same schema regardless of institution.
Institution Coverage
Use Cases
Aggregate accounts, track spending, set budgets. The foundation of every PFM app.
Verify income, assess cash flow, automate underwriting decisions with real transaction data.
Verify accounts before initiating payments. Reduce return rates and NSF fees with balance checks.
Aggregate investment accounts, track net worth, provide holistic financial planning views.
Time to Production
Get API keys, install SDK, link first test account with simulated data
Integration testing with sandbox institutions, error handling, webhook setup
Go live with real institutions, production credentials, monitoring dashboards
Auto-scaling infrastructure, dedicated support, custom SLAs for enterprise
Developer Resources
npm install nexalink
pip install nexalink
gem install nexalink
go get nexalink
Maven / Gradle
Full collection
From API key to first account link in 5 minutes. Step-by-step with code samples.
Read Guide →Full test environment with simulated institutions. No real credentials needed.
Open Sandbox →Complete endpoint documentation with request/response examples and error codes.
View Reference →Better Together
Financial data from Connect feeds every other capability. One integration, compound intelligence.
Account & transaction data
Free sandbox. No credit card required. Your first account link in under 5 minutes.