Billie

Billie Payment API

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.

GitHub

Documentation

📖
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

Other Resources

🔗
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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API entry from apis.yml

apis.yml Raw ↑ 
name: Billie Payment API
description: '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.'
humanURL: https://docs.billie.io/reference/integration-checklist
baseURL: https://paella.billie.io/api/v2
properties:
- type: Documentation
  url: https://docs.billie.io/
- type: APIReference
  url: https://docs.billie.io/reference/integration-checklist
- type: Authentication
  url: authentication/billie-authentication.yml
- type: Webhooks
  url: asyncapi/billie-webhooks.yml
- type: Sandbox
  url: sandbox/billie-sandbox.yml
- type: DeclineCodes
  url: errors/billie-decline-codes.yml
- type: ErrorCatalog
  url: errors/billie-problem-types.yml
- type: Conventions
  url: conventions/billie-conventions.yml
- type: Lifecycle
  url: lifecycle/billie-lifecycle.yml
- type: Conformance
  url: conformance/billie-conformance.yml
- type: DataModel
  url: data-model/billie-data-model.yml
- type: MCPServer
  url: mcp/billie-mcp.yml