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

# Create invoice

> Creates a new invoice for a customer.



## OpenAPI

````yaml /openapi.yaml post /v1/invoices
openapi: 3.0.3
info:
  title: Quentli REST API
  version: 1.0.0
  description: OpenAPI spec for Quentli REST endpoints.
servers:
  - url: https://api.quentli.com
    description: Production API
  - url: https://api.staging.quentli.com
    description: Staging API for production-like validation
  - url: https://api.demo.quentli.com
    description: Demo API hostname served by staging
security:
  - organizationApiKey: []
tags:
  - name: Auth
  - name: Billing
  - name: Catalog
  - name: Customers
  - name: Invoices
  - name: Payment Methods
  - name: Payment Sessions
  - name: Payments
  - name: Subscriptions
  - name: Tax Invoices
  - name: Webhooks
paths:
  /v1/invoices:
    post:
      tags:
        - Invoices
      summary: Create invoice
      description: Creates a new invoice for a customer.
      operationId: invoices_create
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/CreateInvoiceArgs'
      responses:
        '200':
          description: Invoice created
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/CreateInvoicePayload'
        '400':
          description: Invalid request
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/UserError'
        '401':
          description: Authentication required
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/UserError'
        '403':
          description: Permission denied
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/UserError'
components:
  schemas:
    CreateInvoiceArgs:
      type: object
      properties:
        input:
          type: object
          properties:
            dueDate:
              anyOf:
                - type: string
                  description: Date string
                - type: string
                  format: date-time
                  description: Date object
              description: Date when the invoice is due for payment.
              example: '2025-06-01T00:00:00.000Z'
            expireDate:
              anyOf:
                - type: string
                  description: Date string
                - type: string
                  format: date-time
                  description: Date object
                - nullable: true
              description: >-
                Optional date after which the invoice can no longer be paid.
                Must be after dueDate.
              example: null
            collectionMethod:
              type: string
              enum:
                - AUTOMATIC
                - SEND_REMINDER
                - NONE
              description: >-
                How payment is collected: SEND_REMINDER sends a notification,
                AUTOMATIC charges a saved payment method, NONE does nothing.
              example: SEND_REMINDER
            customerId:
              type: string
              description: Identifier of the customer being invoiced.
              example: cus_1234567890abcdefghij
            subscriptionId:
              type: string
              nullable: true
              description: Optional subscription this invoice belongs to.
              example: null
            allowOfftimePayment:
              type: boolean
              nullable: true
              description: Whether the customer can pay before the due date.
              example: null
            beneficiaryId:
              type: string
              nullable: true
              description: >-
                Optional identifier of a different customer who is the actual
                beneficiary of the invoice.
              example: null
            modifiers:
              type: array
              items:
                type: object
                properties:
                  modifierId:
                    type: string
                    description: Identifier of the price modifier to attach.
                    example: prm_1234567890abcdefghij
                required:
                  - modifierId
                additionalProperties: false
              description: >-
                Price modifiers (early payment discounts or late payment
                interest) to apply to this invoice.
            discounts:
              type: array
              items:
                type: object
                properties:
                  discountId:
                    type: string
                    description: Identifier of the discount to apply.
                    example: disc_1234567890abcdefghij
                required:
                  - discountId
                additionalProperties: false
              description: Discounts to apply to this invoice.
            metadata:
              type: array
              nullable: true
              items:
                type: object
                properties:
                  key:
                    type: string
                    description: Metadata key.
                    example: student_id
                  value:
                    type: string
                    description: Metadata value.
                    example: ALU-2025-001
                required:
                  - key
                  - value
                additionalProperties: false
              description: Custom key-value metadata to attach to the invoice.
            items:
              type: array
              items:
                type: object
                properties:
                  conceptId:
                    type: string
                    nullable: true
                    minLength: 1
                    description: >-
                      Identifier of an existing payment concept. Mutually
                      exclusive with `concept`.
                    example: pc_1234567890abcdefghij
                  concept:
                    type: object
                    nullable: true
                    properties:
                      displayName:
                        type: string
                        description: Display name shown on the invoice line item.
                        example: Colegiatura Marzo
                      amount:
                        type: number
                        minimum: 0
                        maximum: 99999999999
                        description: Unit price in minor currency units (e.g. cents).
                        example: 150000
                      currency:
                        type: string
                        description: ISO 4217 currency code.
                        example: MXN
                    required:
                      - displayName
                      - amount
                      - currency
                    additionalProperties: false
                    description: >-
                      Inline concept definition. Mutually exclusive with
                      `conceptId`.
                  quantity:
                    type: number
                    nullable: true
                    minimum: 1
                    description: Number of units. Defaults to 1.
                    example: 1
                  amount:
                    type: number
                    nullable: true
                    minimum: 0
                    maximum: 99999999999
                    description: >-
                      Override unit price in minor currency units. Uses the
                      concept price when omitted.
                    example: null
                  currency:
                    type: string
                    nullable: true
                    description: >-
                      Override ISO 4217 currency code. Uses the concept currency
                      when omitted.
                    example: null
                  description:
                    type: string
                    nullable: true
                    minLength: 1
                    description: >-
                      Override line-item description. Uses the concept display
                      name when omitted.
                    example: null
                additionalProperties: false
              minItems: 1
              maxItems: 100
              description: >-
                Line items for the invoice. Each must reference an existing
                concept or provide an inline concept.
          required:
            - dueDate
            - collectionMethod
            - customerId
            - items
          additionalProperties: false
      required:
        - input
      additionalProperties: false
      description: Request body for creating an invoice.
    CreateInvoicePayload:
      type: object
      properties:
        invoice:
          $ref: '#/components/schemas/Invoice'
      required:
        - invoice
      description: Successful invoice creation response.
    UserError:
      type: object
      properties:
        error:
          type: object
          properties:
            message:
              type: string
          required:
            - message
      required:
        - error
      additionalProperties: false
      description: Standard user-facing error response envelope.
    Invoice:
      type: object
      properties:
        id:
          type: string
          description: Unique identifier of the invoice.
          example: inv_1234567890abcdefghij
        createdAt:
          anyOf:
            - type: string
              description: Date string
            - type: string
              format: date-time
              description: Date object
          description: Date and time when the invoice was created.
          example: '2025-01-10T12:00:00.000Z'
        updatedAt:
          anyOf:
            - type: string
              description: Date string
            - type: string
              format: date-time
              description: Date object
          description: Date and time when the invoice was last updated.
          example: '2025-01-10T12:00:00.000Z'
        customerId:
          type: string
          description: Identifier of the customer this invoice belongs to.
          example: cus_1234567890abcdefghij
        subscriptionId:
          type: string
          nullable: true
          description: Identifier of the subscription that generated this invoice, if any.
          example: sub_1234567890abcdefghij
        collectionMethod:
          type: string
          enum:
            - AUTOMATIC
            - SEND_REMINDER
            - NONE
          description: 'How payment is collected: AUTOMATIC, SEND_REMINDER, or NONE.'
          example: SEND_REMINDER
        totalAmount:
          type: number
          description: Computed total amount of the invoice in minor units.
          example: 150000
        currency:
          type: string
          description: ISO 4217 currency code for the invoice.
          example: MXN
        dueDate:
          anyOf:
            - type: string
              description: Date string
            - type: string
              format: date-time
              description: Date object
          description: Date and time when payment is due.
          example: '2025-02-01T06:00:00.000Z'
        expireDate:
          anyOf:
            - type: string
              description: Date string
            - type: string
              format: date-time
              description: Date object
            - nullable: true
          description: Date and time when the invoice expires.
          example: null
        organizationId:
          type: string
          description: Identifier of the organization that owns this invoice.
          example: org_1234567890abcdefghij
        isPaid:
          type: boolean
          description: Whether the invoice has been fully paid.
          example: false
        paidById:
          type: string
          nullable: true
          description: Identifier of the customer who paid the invoice.
          example: null
        amountPaid:
          type: number
          description: Total amount paid so far in minor units.
          example: 0
        beneficiaryId:
          type: string
          nullable: true
          description: Identifier of the beneficiary customer, if any.
          example: null
        allowOfftimePayment:
          type: boolean
          description: Whether payment is accepted outside the due window.
          example: false
        paidWithId:
          type: string
          nullable: true
          description: Identifier of the payment that settled the invoice.
          example: null
        canceledAt:
          anyOf:
            - type: string
              description: Date string
            - type: string
              format: date-time
              description: Date object
            - nullable: true
          description: Date and time when the invoice was canceled.
          example: null
        canceledById:
          type: string
          nullable: true
          description: Identifier of the user who canceled the invoice.
          example: null
        items:
          type: array
          items:
            $ref: '#/components/schemas/InvoiceItem'
          description: Line items included in this invoice.
          example:
            - id: invi_1234567890abcdefghij
              description: Colegiatura Enero 2025
              conceptId: pc_1234567890abcdefghij
              concept: null
              quantity: 1
        meta:
          type: object
          nullable: true
          additionalProperties:
            type: string
          description: Flattened metadata map where each key maps to a string value.
          example:
            Ciclo Escolar: 2025-1
      required:
        - id
        - createdAt
        - updatedAt
        - customerId
        - subscriptionId
        - collectionMethod
        - totalAmount
        - currency
        - dueDate
        - expireDate
        - organizationId
        - isPaid
        - paidById
        - amountPaid
        - beneficiaryId
        - allowOfftimePayment
        - paidWithId
        - canceledAt
        - canceledById
        - items
      description: Invoice record representing a payment request sent to a customer.
    InvoiceItem:
      type: object
      properties:
        id:
          type: string
          description: Unique identifier of the invoice item.
          example: invi_1234567890abcdefghij
        description:
          type: string
          description: Human-readable description of the line item.
          example: Colegiatura Enero 2025
        conceptId:
          type: string
          nullable: true
          description: Identifier of the payment concept for this item.
          example: pc_1234567890abcdefghij
        quantity:
          type: number
          minimum: 1
          description: Quantity of units for this line item.
          example: 1
      required:
        - id
        - description
        - conceptId
        - quantity
      description: A single line item within an invoice.
  securitySchemes:
    organizationApiKey:
      type: http
      scheme: bearer
      description: 'Organization API key using `Authorization: Bearer sk_...`.'

````