generated: '2026-07-23'
method: searched
source: https://www.npmjs.com/~mastercardapi
note: >-
  First-party client libraries for the Mastercard Open Banking (US) / Finicity platform.
  The server-side REST clients are generated per-language from the published OpenAPI via
  OpenAPI Generator (see Mastercard/open-banking-us-openapi tests), so the officially
  distributed packages on registries are the Connect front-end SDKs plus the shared
  Mastercard OAuth1/encryption helper libraries.
packages:
  - language: javascript
    registry: npm
    name: connect-web-sdk
    url: https://www.npmjs.com/package/connect-web-sdk
    install: npm install connect-web-sdk
    repo: https://github.com/Mastercard/connect-web-sdk
    version: 2.3.0
    official: true
    description: Mastercard Open Banking Connect Web SDK — embeds the hosted Connect account-linking experience.
  - language: javascript
    registry: npm
    name: connect-react-native-sdk
    url: https://www.npmjs.com/package/connect-react-native-sdk
    install: npm install connect-react-native-sdk
    version: 2.1.0
    official: true
    description: React Native SDK for the Mastercard Open Finance Connect experience.
  - language: javascript
    registry: npm
    name: mastercard-oauth1-signer
    url: https://www.npmjs.com/package/mastercard-oauth1-signer
    official: true
    description: Shared Mastercard library for signing API requests (used across Mastercard Developers APIs).
  - language: java
    registry: github
    name: open-banking-us-openapi (generated client)
    url: https://github.com/Mastercard/open-banking-us-openapi
    official: true
    description: >-
      Java API client generated from the official OpenAPI via OpenAPI Generator; the repo's test
      suite consumes it. Other languages are generated the same way (see OpenAPI Generator).