# FIS Accounting Data as a Service

**Canonical:** https://apis.io/apis/fis/fis-accounting-data-as-a-service/  
**Provider:** FIS Global — https://apis.io/providers/fis/  
**Base URL:** https://api.railz.ai  
**Documentation:** https://docs.railz.ai/

FIS Accounting Data as a Service is one of 9 APIs that [FIS Global](https://apis.io/providers/fis/) publishes on the [APIs.io](https://apis.io/) network, described by a machine-readable OpenAPI specification. Tagged areas include Accounting, Financial-Services, Data, Banking, and REST. The published artifact set on APIs.io includes an OpenAPI specification, API documentation, and an API reference.

FIS Accounting Data as a Service (shipped as Railz before FIS acquired it) reads and writes a business's accounting, banking and commerce data through an authorised connection to that business's own system. It is the one FIS API whose contract is publicly readable end to end: an OpenAPI 3.0.0 document served openly at https://api.railz.ai/swagger.json with 175 paths and 233 operations across two live generations. Everything is scoped by a connectionUuid created through the Connect widget.

## Operations (60 of 233)

| Method | Path | Summary |
|---|---|---|
| GET | `/connections` | — |
| PUT | `/connections/disconnect` | — |
| GET | `/v2/connections` | List Connections |
| PUT | `/v2/connections/disconnect` | Disconnect a connection |
| GET | `/data/pushStatus` | — |
| GET | `/data/syncStatus` | — |
| POST | `/data/sync` | — |
| GET | `/v2/data/pushStatus` | Fetch Status of Push Requests |
| GET | `/v2/data/deleteStatus` | Fetch Status of Delete Requests |
| GET | `/v2/data/syncStatus` | Fetch Status of Data Syncs |
| GET | `/v2/data/syncInfo` | Fetch Latest Sync Information |
| POST | `/v2/data/sync` | Queue a Data Sync |
| GET | `/v2/data/pushOptions` | Fetch Push Options for Asps |
| GET | `/accounts` | — |
| POST | `/accounts` | — |
| GET | `/v2/accounting/accounts` | List Accounts |
| POST | `/v2/accounting/accounts` | Create an Account |
| POST | `/v2/accounting/accounts/batch` | Batch Create Accounts |
| PUT | `/v2/accounting/accounts/batch` | Batch Update Accounts |
| PUT | `/v2/accounting/accounts/{id}` | Update an Account |
| GET | `/accountingTransactions` | — |
| GET | `/v2/accounting/accountingTransactions` | List Accounting Transactions |
| GET | `/apAging` | — |
| GET | `/arAging` | — |
| GET | `/v2/accounting/apAging` | List Aged Payables |
| GET | `/v2/accounting/arAging` | List Aged Receivables |
| GET | `/attachments` | — |
| POST | `/attachments` | — |
| GET | `/v2/accounting/attachments` | List Attachments |
| POST | `/v2/accounting/attachments` | Create an Attachment |
| GET | `/bankTransfers` | — |
| POST | `/bankTransfers` | — |
| GET | `/bankAccounts` | — |
| GET | `/bankTransactions` | — |
| POST | `/bankTransactions` | — |
| GET | `/bankReconciliation` | — |
| GET | `/v2/accounting/bankTransfers` | List Bank Transfers |
| POST | `/v2/accounting/bankTransfers` | Create a Bank Transfer |
| GET | `/v2/banking/bankAccounts` | List Bank Accounts |
| GET | `/v2/accounting/bankAccounts` | List Bank Accounts |
| POST | `/v2/accounting/bankAccounts` | Create a Bank Account |
| GET | `/v2/banking/bankTransactions` | List Bank Transactions |
| GET | `/v2/accounting/bankTransactions` | List Bank Transactions |
| POST | `/v2/accounting/bankTransactions` | Create a Bank Transaction |
| POST | `/v2/accounting/bankTransactions/batch` | Batch Create Bank Transactions |
| PUT | `/v2/accounting/bankTransactions/batch` | Batch Update Bank Transactions |
| PUT | `/v2/accounting/bankTransactions/{id}` | Update a Bank Transaction |
| GET | `/v2/analytics/bankReconciliation` | List Banking Reconciliations |
| GET | `/v2/banking/bankAssets` | List Bank Assets |
| GET | `/bills` | — |
| POST | `/bills` | — |
| PUT | `/bills/{id}` | — |
| GET | `/bills/payments` | — |
| POST | `/bills/payments` | — |
| GET | `/bills/creditNotes` | — |
| POST | `/bills/creditNotes` | — |
| GET | `/v2/accounting/bills` | List Bills |
| POST | `/v2/accounting/bills` | Create a Bill |
| PUT | `/v2/accounting/bills/{id}` | Update a Bill |
| DELETE | `/v2/accounting/bills/{id}` | Delete a Bill |

…and 173 more operations. They are listed in full on the page.

## Machine-readable artifacts (8)

- **OpenAPI** — https://raw.githubusercontent.com/api-evangelist/fis/refs/heads/main/openapi/_original/fis-accounting-data-as-a-service-openapi.json
- **Overlay** — https://raw.githubusercontent.com/api-evangelist/fis/refs/heads/main/overlays/fis-accounting-data-as-a-service-overlay.yaml
- **Documentation** — https://docs.railz.ai/
- **APIReference** — https://docs.railz.ai/reference
- **Portal** — https://dashboard.railz.ai/
- **Webhooks** — https://raw.githubusercontent.com/api-evangelist/fis/refs/heads/main/asyncapi/fis-webhooks.yml
- **MCPServer** — https://raw.githubusercontent.com/api-evangelist/fis/refs/heads/main/mcp/fis-mcp.yml
- **ToolCrosswalk** — https://raw.githubusercontent.com/api-evangelist/fis/refs/heads/main/mcp/fis-tool-crosswalk.yml

## Other FIS Global APIs (8)

- [FIS Core Banking API](https://apis.io/apis/fis/fis-core-banking-api/)
- [FIS Wealth Management API](https://apis.io/apis/fis/fis-wealth-management-api/)
- [FIS Global Accounts API](https://apis.io/apis/fis/fis-accounts-api/)
- [FIS Global ACH API](https://apis.io/apis/fis/fis-ach-api/)
- [FIS Global Payments API](https://apis.io/apis/fis/fis-payments-api/)
- [FIS Global Transactions API](https://apis.io/apis/fis/fis-transactions-api/)
- [FIS Global Wire Transfers API](https://apis.io/apis/fis/fis-wire-transfers-api/)
- [FIS Code Connect API Marketplace](https://apis.io/apis/fis/code-connect/)

## Tags

Accounting, Financial-Services, Data, Banking, REST

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/apis/fis/fis-accounting-data-as-a-service/). The API's provider profile, Kin Score and agent-readiness rating are at https://apis.io/providers/fis/.