API

12 tools
St

Stripe

Featured

Full-stack payments platform with APIs for accepting payments, managing subscriptions, and running a marketplace.

Payments & Billing
API, SDKGlobalUsage-based
Pl

Plaid

Connect bank accounts and access financial data — transactions, balances, identity — via a unified open banking API.

Banking & Open Finance
APIUS, UK, EuropeFree tier
Sa

Sardine

Real-time fraud and compliance platform with device intelligence, behavioral biometrics, and AML screening.

Fraud, Risk & AML
API, PlatformGlobalEnterprise
Al

Alloy

Identity decisioning platform for KYC, KYB, and ongoing monitoring. Orchestrate 190+ data sources.

Identity & KYC
API, PlatformGlobalUsage-based
Po

Polygon.io

Real-time and historical market data API for stocks, options, forex, and crypto with low-latency websocket feeds.

Financial Data & Market Data
APIGlobalFree tier
Ti

Tink

PSD2-compliant open banking platform enabling account aggregation, payment initiation, and personal finance data.

Banking & Open Finance
API, SDKEuropeUsage-based
On

Onfido

AI-powered identity verification and biometric authentication for global onboarding and ongoing KYC.

Identity & KYC
API, SDKGlobalUsage-based
Br

Brex

Spend management and corporate cards API for startups and growing businesses.

Payments & Billing
APIUSEnterprise
Al

Alpaca

Commission-free stock trading API for building brokerage and wealth apps.

Investing & Wealth
APIGlobalFree tier
Un

Unit

Embedded finance platform for adding banking, cards, and lending to any product.

Banking & Open Finance
API, PlatformUSUsage-based
Op

Open Exchange Rates

Reliable, accurate, and up-to-date currency data and exchange rates API.

Financial Data & Market Data
APIGlobalFree tier
Co

ComplyAdvantage

AI-driven AML and sanctions screening with real-time risk intelligence.

Fraud, Risk & AML
API, PlatformGlobalEnterprise