# Checkout.com Standalone API

**Canonical:** https://apis.io/apis/checkout-com/checkout-com-standalone-api/  
**Provider:** Checkout.com — https://apis.io/providers/checkout-com/  
**Base URL:** https://api.checkout.com  
**Documentation:** https://api-reference.checkout.com/

Checkout.com Standalone API is one of 65 APIs that [Checkout.com](https://apis.io/providers/checkout-com/) publishes on the [APIs.io](https://apis.io/) network, described by a machine-readable OpenAPI specification. Tagged areas include Standalone. The published artifact set on APIs.io includes an OpenAPI specification.

Use Standalone Sessions to authenticate transactions with 3D Secure (3DS) and comply with Strong Customer Authentication (SCA) requirements.

## Operations (5)

| Method | Path | Summary |
|---|---|---|
| POST | `/sessions` | Request a session |
| GET | `/sessions/{id}` | Get session details |
| PUT | `/sessions/{id}/collect-data` | Update a session |
| POST | `/sessions/{id}/complete` | Complete a session |
| PUT | `/sessions/{id}/issuer-fingerprint` | Update session 3DS Method completion indicator |

## Machine-readable artifacts (1)

- **OpenAPI** — https://artifacts.apis.io/checkout-com/openapi/checkout-com-standalone-api-openapi.yml

## Other Checkout.com APIs (12)

- [Checkout.com Payments API](https://apis.io/apis/checkout-com/checkoutcom-payments-api/)
- [Checkout.com Payouts API](https://apis.io/apis/checkout-com/checkoutcom-payouts-api/)
- [Checkout.com Payment Sessions & Flow API](https://apis.io/apis/checkout-com/checkoutcom-payment-sessions-flow-api/)
- [Checkout.com Payment Links & Hosted Payments API](https://apis.io/apis/checkout-com/checkoutcom-payment-links-hosted-payments-api/)
- [Checkout.com Issuing API](https://apis.io/apis/checkout-com/checkoutcom-issuing-api/)
- [Checkout.com Tokenization & Instruments API](https://apis.io/apis/checkout-com/checkoutcom-tokenization-instruments-api/)
- [Checkout.com Disputes & Risk API](https://apis.io/apis/checkout-com/checkoutcom-disputes-risk-api/)
- [Checkout.com Forex API](https://apis.io/apis/checkout-com/checkoutcom-forex-api/)
- [Checkout.com Apple Pay & Google Pay API](https://apis.io/apis/checkout-com/checkoutcom-apple-pay-google-pay-api/)
- [Checkout.com Network Tokens API](https://apis.io/apis/checkout-com/checkoutcom-network-tokens-api/)
- [Checkout.com Transfers & Balances API](https://apis.io/apis/checkout-com/checkoutcom-transfers-balances-api/)
- [Checkout.com Reporting & Financial Actions API](https://apis.io/apis/checkout-com/checkoutcom-reporting-financial-actions-api/)

## Tags

Standalone

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/apis/checkout-com/checkout-com-standalone-api/). The API's provider profile, Kin Score and agent-readiness rating are at https://apis.io/providers/checkout-com/.