> ## Documentation Index
> Fetch the complete documentation index at: https://docs.puplar.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Create invoice

> Create a draft invoice from products. Amount is sum of line items (minor units). Finalize to get a payment URL.



## OpenAPI

````yaml /openapi.json post /invoices
openapi: 3.0.0
info:
  title: Puplar Integrations API
  version: 1.0.0
  description: >-
    Public API for integrators using **secret keys** (`sk_test_*` /
    `sk_live_*`). Authenticated routes need only **`Authorization: Bearer
    <secret_key>`**. Test keys sandbox payments, virtual accounts, KYC, and bank
    resolve — see guides/test-vs-live for fixtures. Responses follow `{ message,
    data?, errors? }`. Includes customers, collections, payments, products,
    invoices, payouts, wallets, virtual accounts, crypto, refunds, and webhooks.
  contact:
    name: Puplar Support
    email: support@puplar.com
servers:
  - url: https://api.puplar.com
    description: Production
security: []
tags:
  - name: Customers
    description: Customer CRUD and KYC documents
  - name: Virtual accounts
    description: Funding instructions and test deposit simulation
  - name: Webhooks
    description: >-
      Webhook endpoints and delivery logs. Subscriber verification: HMAC-SHA256
      of raw body with webhook secret, header `X-Signature: sha256=<hex>`.
  - name: Payments
    description: One-time payment collection via hosted checkout links
  - name: Crypto
    description: EVM crypto wallet addresses and supported tokens
  - name: Collections
    description: Reusable checkout links
  - name: Products
    description: Catalog items for invoices. Amounts are minor units.
  - name: Invoices
    description: Draft → finalize → paid or void. Finalize returns a payment URL.
  - name: Payouts
    description: >-
      Send wallet funds to a bank account or crypto wallet. Duplicate
      `reference` returns 409.
  - name: Wallets
    description: >-
      Wallet balances per currency (available, pending, total). Amounts in minor
      units.
  - name: Misc
    description: >-
      Country-scoped bank list and account name lookup for payouts (e.g. `ng`
      for Nigeria).
  - name: Meta
    description: Health and service info
paths:
  /invoices:
    post:
      tags:
        - Invoices
      summary: Create invoice
      description: >-
        Create a draft invoice from products. Amount is sum of line items (minor
        units). Finalize to get a payment URL.
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: object
              required:
                - customer
                - currency
                - lines
              properties:
                customer:
                  oneOf:
                    - type: string
                      description: Existing customer ID
                    - type: object
                      required:
                        - email
                      properties:
                        email:
                          type: string
                          format: email
                          example: ada@example.com
                        first_name:
                          type: string
                          example: Ada
                        last_name:
                          type: string
                          example: Okafor
                        phone:
                          type: string
                          example: '+2348012345678'
                currency:
                  type: string
                  enum:
                    - usd
                    - ngn
                    - eur
                  example: ngn
                lines:
                  type: array
                  minItems: 1
                  items:
                    type: object
                    required:
                      - product
                      - quantity
                    properties:
                      product:
                        type: string
                        description: Product ID
                      quantity:
                        type: integer
                        minimum: 1
                        example: 2
                due_date:
                  type: string
                  format: date-time
                  description: Optional. Past-due invoices stay payable.
                memo:
                  type: string
                  maxLength: 500
                metadata:
                  type: object
                  additionalProperties: true
      responses:
        '201':
          description: Draft invoice created
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Success'
        '400':
          description: Validation error (mixed currency, archived product, etc.)
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
        '403':
          description: Collections not enabled for this business
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
      security:
        - bearerAuth: []
components:
  schemas:
    Success:
      type: object
      properties:
        message:
          type: string
          example: Success
        data:
          type: object
          nullable: true
    Error:
      type: object
      properties:
        message:
          type: string
          example: Error message
        data:
          type: object
          nullable: true
        errors:
          type: object
          nullable: true
  securitySchemes:
    bearerAuth:
      type: http
      scheme: bearer
      bearerFormat: API Key
      description: >-
        Secret key: `Authorization: Bearer sk_test_...` or `sk_live_...`.
        Business and live/test mode are inferred from the key.

````