# Billie Payment API

**Canonical:** https://apis.io/apis/billie/billie-payment-api/  
**Provider:** Billie — https://apis.io/providers/billie/  
**Base URL:** https://paella.billie.io/api/v2  
**Documentation:** https://docs.billie.io/reference/integration-checklist

Billie Payment API is published by [Billie](https://apis.io/providers/billie/) on the [APIs.io](https://apis.io/) network. The published artifact set on APIs.io includes API documentation, an API reference, and authentication docs.

OAuth2 client-credentials REST API for B2B BNPL: checkout sessions, hosted payment page, backend order creation, order management, captures (invoices), payment confirmation, refunds/credit notes, and webhooks.

## Machine-readable artifacts (13)

- **Documentation** — https://docs.billie.io/
- **APIReference** — https://docs.billie.io/reference/integration-checklist
- **Authentication** — https://raw.githubusercontent.com/api-evangelist/billie/refs/heads/main/authentication/billie-authentication.yml
- **Webhooks** — https://raw.githubusercontent.com/api-evangelist/billie/refs/heads/main/asyncapi/billie-webhooks.yml
- **Sandbox** — https://raw.githubusercontent.com/api-evangelist/billie/refs/heads/main/sandbox/billie-sandbox.yml
- **DeclineCodes** — https://raw.githubusercontent.com/api-evangelist/billie/refs/heads/main/errors/billie-decline-codes.yml
- **ErrorCatalog** — https://raw.githubusercontent.com/api-evangelist/billie/refs/heads/main/errors/billie-problem-types.yml
- **Conventions** — https://raw.githubusercontent.com/api-evangelist/billie/refs/heads/main/conventions/billie-conventions.yml
- **Lifecycle** — https://raw.githubusercontent.com/api-evangelist/billie/refs/heads/main/lifecycle/billie-lifecycle.yml
- **Conformance** — https://raw.githubusercontent.com/api-evangelist/billie/refs/heads/main/conformance/billie-conformance.yml
- **DataModel** — https://raw.githubusercontent.com/api-evangelist/billie/refs/heads/main/data-model/billie-data-model.yml
- **MCPServer** — https://raw.githubusercontent.com/api-evangelist/billie/refs/heads/main/mcp/billie-mcp.yml
- **APIsJSON** — https://raw.githubusercontent.com/api-evangelist/billie/refs/heads/main/apis.yml

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