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

# List Customers

> Paginated list of customers, including customer-level billing contacts.

Use `externalCustomerId` to look up a customer by your external identifier.

**Scope:** `customers:read`


## OpenAPI

````yaml /openapi/customers.yaml get /v1/customers
openapi: 3.1.0
info:
  title: Customers API
  version: '1.0'
servers:
  - url: https://api.monk.com
    description: Production
  - url: https://api-sandbox.monk.com
    description: Sandbox
security:
  - bearerAuth: []
paths:
  /v1/customers:
    get:
      summary: List Customers
      description: Paginated list of customers, including customer-level billing contacts.
      operationId: listCustomers
      parameters:
        - name: externalCustomerId
          in: query
          description: Filter by external customer ID (exact match)
          schema:
            type: string
        - name: limit
          in: query
          schema:
            type: integer
            default: 10
            maximum: 100
        - name: offset
          in: query
          schema:
            type: integer
            default: 0
      responses:
        '200':
          description: Paginated customer list
          content:
            application/json:
              schema:
                type: object
                properties:
                  data:
                    type: array
                    items:
                      $ref: '#/components/schemas/Customer'
                  hasMore:
                    type: boolean
                  total:
                    type: integer
        '401':
          $ref: '#/components/responses/Unauthorized'
components:
  schemas:
    Customer:
      type: object
      properties:
        id:
          type: string
        name:
          type: string
        legalName:
          type:
            - string
            - 'null'
        tags:
          type: array
          items:
            type: string
        isPaused:
          type: boolean
        pausedAt:
          type:
            - string
            - 'null'
        pausedUntil:
          type:
            - string
            - 'null'
          format: date
          description: >-
            Date when customer-level invoice sending resumes automatically
            (`YYYY-MM-DD`), or `null` for no auto-resume date.
        metadata:
          type: object
          properties:
            externalCustomerId:
              type:
                - string
                - 'null'
            externalCompanyIds:
              type: array
              items:
                type: string
        externalIds:
          type: array
          items:
            $ref: '#/components/schemas/ExternalId'
        billingContacts:
          type: array
          description: >-
            Customer-level billing contacts (`accounts_payable` / Accounts
            Payable). Does not include contract- or invoice-specific contacts.
          items:
            $ref: '#/components/schemas/BillingContact'
        createdAt:
          type: string
          format: date-time
        updatedAt:
          type: string
          format: date-time
    ExternalId:
      type: object
      properties:
        provider:
          type: string
          enum:
            - hubspot
            - quickbooks
            - stripe
            - salesforce
            - netsuite
        entityType:
          type: string
          enum:
            - customer
        id:
          type: string
    BillingContact:
      type: object
      properties:
        name:
          type: string
        email:
          type: string
          format: email
        phone:
          type:
            - string
            - 'null'
    ErrorResponse:
      type: object
      properties:
        error:
          type: object
          properties:
            message:
              type: string
            code:
              type: string
  responses:
    Unauthorized:
      description: Invalid or missing API key
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/ErrorResponse'
  securitySchemes:
    bearerAuth:
      type: http
      scheme: bearer

````