# activemerchant/active_merchant

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4,600 stars · 2,490 forks · Ruby · MIT

## Links

- GitHub: https://github.com/activemerchant/active_merchant
- Homepage: http://activemerchant.org
- awesome-repositories: https://awesome-repositories.com/repository/activemerchant-active-merchant.md

## Description

Active Merchant is a Ruby library that provides a payment gateway abstraction layer to process credit card transactions across multiple different payment processor APIs. It serves as a payment API wrapper, offering a consistent set of commands and classes that abstract the complexity of various provider request and response formats.

The library utilizes a unified payment gateway API to standardize global payment processing and unify payment flows. It specifically includes a standardized interface for handling 3D Secure authentication and identity verification for card-not-present transactions.

The project covers core capabilities for credit card transaction processing, including the authorization and capture of funds. It achieves this by translating generic payment calls into provider-specific formats and mapping raw API responses into standardized internal objects with consistent success and failure attributes.

## Tags

### Software Engineering & Architecture

- [Payment Gateway Abstractions](https://awesome-repositories.com/f/software-engineering-architecture/framework-agnostic-interfaces/payment-gateway-abstractions.md) — Provides a standardized Ruby interface that abstracts diverse payment provider APIs for uniform transaction handling.
- [Command Patterns](https://awesome-repositories.com/f/software-engineering-architecture/behavioral-design-patterns/command-patterns.md) — Encapsulates payment requests as discrete command objects to decouple transaction initiation from execution.
- [Modular Plugin Architectures](https://awesome-repositories.com/f/software-engineering-architecture/modular-plugin-architectures.md) — Organizes gateway implementations into separate modules to ensure the core library remains lightweight and extensible.

### Artificial Intelligence & ML

- [Payment Provider Abstractions](https://awesome-repositories.com/f/artificial-intelligence-ml/model-provider-abstractions/service-provider-abstractions/payment-provider-abstractions.md) — Wraps complex payment provider request and response formats into a consistent set of commands and classes.

### Business & Productivity Software

- [Credit Card Payment Processors](https://awesome-repositories.com/f/business-productivity-software/credit-card-payment-processors.md) — Provides a comprehensive toolkit for authorizing and capturing funds from credit cards across various gateways.
- [Credit Card Processing](https://awesome-repositories.com/f/business-productivity-software/credit-card-processing.md) — Handles the authorization and capture of funds from credit cards through external payment gateways.
- [Credit Card Transaction Processing](https://awesome-repositories.com/f/business-productivity-software/credit-card-transaction-processing.md) — Coordinates with external gateways to authorize and capture funds from credit cards after validating payment details. ([source](http://activemerchant.org))
- [Payment Adapters](https://awesome-repositories.com/f/business-productivity-software/payment-adapters.md) — Provides specialized adapter classes to translate generic payment calls into provider-specific request formats.
- [Payment Gateway Integrations](https://awesome-repositories.com/f/business-productivity-software/payment-gateway-integrations.md) — Connects applications to multiple payment processors using a single standardized interface.
- [International Payment Gateways](https://awesome-repositories.com/f/business-productivity-software/international-payment-gateways.md) — Unifies diverse international payment provider APIs into a consistent command set for global transaction management.
- [Payment Transaction Processings](https://awesome-repositories.com/f/business-productivity-software/payment-transaction-processings.md) — Offers a standardized interface for processing credit card transactions across various international payment providers. ([source](https://cdn.jsdelivr.net/gh/activemerchant/active_merchant@master/README.md))

### Web Development

- [Data Object Mapping](https://awesome-repositories.com/f/web-development/response-handlers/automatic-response-mapping/response-schema-mappings/data-object-mapping.md) — Maps raw API responses from various payment providers into standardized internal objects with consistent attributes.

### Security & Cryptography

- [Payment Authentication Interfaces](https://awesome-repositories.com/f/security-cryptography/identity-authentication/standardized-identity-interfaces/payment-authentication-interfaces.md) — Provides a standardized interface for handling identity verification and authentication results for card-not-present transactions.
- [3D Secure Support](https://awesome-repositories.com/f/security-cryptography/payment-gateway-security/3d-secure-support.md) — Implements a mechanism for passing standardized authentication results to gateways to verify card-not-present transactions. ([source](https://github.com/activemerchant/active_merchant/wiki/Standardized-3DS-Fields))
- [3D Secure Verifications](https://awesome-repositories.com/f/security-cryptography/payment-gateway-security/3d-secure-verifications.md) — Supports 3D Secure authentication to verify card-not-present transactions through standardized identity results.