# Signifyd Transaction API

**Canonical:** https://apis.io/apis/signifyd/signifyd-transaction-api/  
**Provider:** Signifyd — https://apis.io/providers/signifyd/  
**Documentation:** https://developer.signifyd.com/main/reference

Signifyd Transaction API is one of 8 APIs that [Signifyd](https://apis.io/providers/signifyd/) publishes on the [APIs.io](https://apis.io/) network. Tagged areas include Transaction, Payments, Fraud, and E-Commerce. The published artifact set on APIs.io includes API documentation.

Submit finalized order and payment transaction details after authorization. Enables Signifyd to reconcile the pre-auth Checkout decision with the captured transaction, evaluate any post-auth risk signals, and finalize the chargeback guarantee. Decision results are delivered via the TRANSACTION checkpoint webhook.

## Machine-readable artifacts (1)

- **Documentation** — https://developer.signifyd.com/main/reference

## Other Signifyd APIs (7)

- [Signifyd Sale (Checkout) API](https://apis.io/apis/signifyd/signifyd-sale-api/)
- [Signifyd Decisions API](https://apis.io/apis/signifyd/signifyd-decisions-api/)
- [Signifyd Feedback API](https://apis.io/apis/signifyd/signifyd-feedback-api/)
- [Signifyd Returns API](https://apis.io/apis/signifyd/signifyd-returns-api/)
- [Signifyd Sales Tax API](https://apis.io/apis/signifyd/signifyd-sales-tax-api/)
- [Signifyd Account Protection API](https://apis.io/apis/signifyd/signifyd-account-protection-api/)
- [Signifyd Webhooks API](https://apis.io/apis/signifyd/signifyd-webhooks-api/)

## Tags

Transaction, Payments, Fraud, E-Commerce

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