# Newline Transactions API

**Canonical:** https://apis.io/apis/fifth-third-bancorp/newline-transactions-api/  
**Provider:** Fifth Third Bancorp — https://apis.io/providers/fifth-third-bancorp/  
**Base URL:** https://sandbox.newline53.com/api/v1  
**Documentation:** https://developers.newline53.com/reference/transactions

Newline Transactions API is one of 13 APIs that [Fifth Third Bancorp](https://apis.io/providers/fifth-third-bancorp/) publishes on the [APIs.io](https://apis.io/) network, described by a machine-readable OpenAPI specification. Tagged areas include Transaction, Reconciliation, Monitoring, Authorization, and United States. The published artifact set on APIs.io includes an OpenAPI specification, an API reference, and API documentation.

List and retrieve Transactions and their Transaction Events, and approve or deny pending Transactions before execution. Transaction Events expose the individual steps required to complete a Transaction so operators can track progress and review history. Nine operations cover transaction listing, detail, authorization, and event tracking for reconciliation and monitoring.

## Machine-readable artifacts (3)

- **OpenAPI** — https://raw.githubusercontent.com/api-evangelist/fifth-third-bancorp/refs/heads/main/openapi/newline-platform-api.json
- **APIReference** — https://developers.newline53.com/reference/transactions
- **Documentation** — https://developers.newline53.com/reference/transaction-statuses-and-transaction-types

## Other Fifth Third Bancorp APIs (12)

- [Newline Auth API](https://apis.io/apis/fifth-third-bancorp/newline-auth-api/)
- [Newline Customers API](https://apis.io/apis/fifth-third-bancorp/newline-customers-api/)
- [Newline Customer Products API](https://apis.io/apis/fifth-third-bancorp/newline-customer-products-api/)
- [Newline Products API](https://apis.io/apis/fifth-third-bancorp/newline-products-api/)
- [Newline Pools API](https://apis.io/apis/fifth-third-bancorp/newline-pools-api/)
- [Newline Custodial Accounts API](https://apis.io/apis/fifth-third-bancorp/newline-custodial-accounts-api/)
- [Newline Synthetic Accounts API](https://apis.io/apis/fifth-third-bancorp/newline-synthetic-accounts-api/)
- [Newline Transfers API](https://apis.io/apis/fifth-third-bancorp/newline-transfers-api/)
- [Newline Combined Transfers API](https://apis.io/apis/fifth-third-bancorp/newline-combined-transfers-api/)
- [Newline Returns API](https://apis.io/apis/fifth-third-bancorp/newline-returns-api/)
- [Newline Virtual Reference Numbers API](https://apis.io/apis/fifth-third-bancorp/newline-virtual-reference-numbers-api/)
- [Newline Sandbox API](https://apis.io/apis/fifth-third-bancorp/newline-sandbox-api/)

## Tags

Transaction, Reconciliation, Monitoring, Authorization, United States

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