# Apperio E-billing API

**Canonical:** https://apis.io/apis/apperio/apperio-e-billing-api/  
**Provider:** Apperio — https://apis.io/providers/apperio/  
**Base URL:** https://app.apperio.com/api/v1  
**Documentation:** https://developer.apperio.com/

Apperio E-billing API is one of 5 APIs that [Apperio](https://apis.io/providers/apperio/) publishes on the [APIs.io](https://apis.io/) network, described by a machine-readable OpenAPI specification. Tagged areas include E-Billing. The published artifact set on APIs.io includes an OpenAPI specification.

The e-billing endpoints provide access to the e-billing invoices in Apperio. They allow you to retrieve information about the invoices and the approval workflow, and also to approve and reject invoices.

## Operations (13)

| Method | Path | Summary |
|---|---|---|
| GET | `/api/v1/ebilling/invoices/{invoice-id}/` | Get the invoice details |
| POST | `/api/v1/ebilling/invoices/{invoice-id}/status/` | Change invoice status |
| GET | `/api/v1/ebilling/invoices/{invoice-id}/approval-workflow/` | Get information about the invoice's approval workflow |
| POST | `/api/v1/ebilling/invoices/{invoice-id}/approval-state/{invoice-approval-state-id}/approve/` | Approve the invoice |
| POST | `/api/v1/ebilling/invoices/{invoice-id}/approval-state/{invoice-approval-state-id}/reject/` | Reject the invoice |
| POST | `/api/v1/ebilling/invoices/{invoice-id}/approval-state/{invoice-approval-state-id}/adjust/` | Adjust the payable amount of the invoice |
| POST | `/api/v1/ebilling/invoices/{invoice-id}/approval-state/{invoice-approval-state-id}/query/` | Query the invoice |
| PUT | `/api/v1/ebilling/invoices/{invoice-id}/attributes/` | Set the invoice attributes |
| GET | `/api/v1/ebilling/invoices/business-attributes/` | List business invoice attributes |
| POST | `/api/v1/ebilling/invoices/business-attributes/` | Create a business invoice attribute |
| GET | `/api/v1/ebilling/invoices/business-attributes/{name}/` | Get a business invoice attribute |
| PUT | `/api/v1/ebilling/invoices/business-attributes/{name}/` | Update a business invoice attribute |
| DELETE | `/api/v1/ebilling/invoices/business-attributes/{name}/` | Delete a business invoice attribute |

## Machine-readable artifacts (1)

- **OpenAPI** — https://raw.githubusercontent.com/api-evangelist/apperio/refs/heads/main/openapi/apperio-e-billing-api-openapi.yml

## Other Apperio APIs (4)

- [Apperio Analytics API](https://apis.io/apis/apperio/apperio-analytics-api/)
- [Apperio Filter API](https://apis.io/apis/apperio/apperio-filter-api/)
- [Apperio Matter information API](https://apis.io/apis/apperio/apperio-matter-information-api/)
- [Apperio Users API](https://apis.io/apis/apperio/apperio-users-api/)

## Tags

E-Billing

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