Shift4 JavaScript Library

The Shift4 JavaScript library provides secure, customizable HTML/CSS components for building on-page payment forms and multi-step checkout pages.

Work with this as data

Every API here is available over the APIs.io API and to AI agents over MCP.

MCP server

One button, every client — Claude, Cursor, VS Code and the rest.

https://apis.io/mcp

Tools for apis

7 MCP tools reach this
  • find_apisBrowse and filter every API in the catalog.
  • get_api_artifactsOne API's artifacts, grouped by type.
  • get_openapiThe primary OpenAPI for this API.
  • find_similar_apisAPIs that look like this one.
  • apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
  • resolveTurn a domain, URL or GitHub org into the provider it belongs to.
  • find_cohortsEvery scored population of providers in the catalog.
All 92 tools

Call it yourself

curl for this page
This API
curl "https://apis.io/api/v1/apis/shift4-js"
All apis
curl "https://apis.io/api/v1/apis?limit=25"

Discovery needs no key. Ratings and market analysis are Pro.

Get an API key

Free tier, no email required.

A second provider on the same verified email joins the account you already have.

API entry from apis.yml

apis.yml Raw ↑
aid: shift4-payments:shift4-js
name: Shift4 JavaScript Library
tags:
- JavaScript
- SDK
- Components
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
humanURL: https://dev.shift4.com/docs/js
description: The Shift4 JavaScript library provides secure, customizable HTML/CSS components for building
  on-page payment forms and multi-step checkout pages.
properties:
- type: Documentation
  url: https://dev.shift4.com/docs/js
- type: SDKs
  url: https://dev.shift4.com/docs/js
- type: CodeExamples
  url: https://dev.shift4.com/examples