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

# Batch create customers

> Create up to 100 customers in a single request.

Create up to 100 customers in a single request.


## OpenAPI

````yaml /openapi/es/rest/2026-08-27.json post /customers/batch
openapi: 3.1.0
info:
  title: Commet API
  version: '2026-08-27'
  description: Billing and payments API for SaaS and AI products.
servers:
  - url: https://commet.co/api/v1
security:
  - ApiKeyAuth: []
tags:
  - name: Test Clock
    description: >-
      Simulate the passage of time in sandbox to test billing flows. Mirrors
      Stripe test clocks: forward-only and sandbox-only.
  - name: Customers
  - name: Subscriptions
  - name: Plans
  - name: Markets
    description: >-
      Reusable country groups for market-specific prices and selectable price
      variants.
  - name: Offers
  - name: Promo Codes
  - name: Features
  - name: Usage
  - name: Seats
  - name: Quota
  - name: Add-ons
  - name: Portal
  - name: Credit Packs
  - name: Plan Groups
  - name: Invoices
  - name: Payments
    description: >-
      One-time payments with no subscription or plan. Charge a customer's saved
      payment method off-session, or create a payment link the customer opens to
      pay. Tax, invoice, and receipt are handled automatically.
  - name: Transactions
  - name: Webhooks
  - name: API Keys
  - name: Payouts
    description: >-
      Withdraw available balance to your bank and manage the payout account
      (verification + destination bank accounts).
  - name: Provisioning
    description: >-
      Take ownership of an organization an agent provisioned headlessly. The
      agent holds the API keys from the start; a human claims the account
      through a claim link.
paths:
  /customers/batch:
    post:
      tags:
        - Customers
      summary: Batch create customers
      description: Create up to 100 customers in a single request.
      operationId: batch-create-customers
      parameters:
        - name: Idempotency-Key
          in: header
          required: false
          description: >-
            Unique key used to safely retry this write for 24 hours without
            applying it twice.
          schema:
            type: string
            minLength: 1
            maxLength: 200
        - name: Commet-Version
          in: header
          required: false
          description: >-
            API version used by this reference. Send this header to select this
            contract explicitly.
          schema:
            type: string
            default: '2026-08-27'
          example: '2026-08-27'
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: object
              properties:
                customers:
                  minItems: 1
                  maxItems: 100
                  type: array
                  items:
                    type: object
                    properties:
                      email:
                        type: string
                        format: email
                        pattern: >-
                          ^(?!\.)(?!.*\.\.)([A-Za-z0-9_'+\-\.]*)[A-Za-z0-9_+-]@([A-Za-z0-9][A-Za-z0-9\-]*\.)+[A-Za-z]{2,}$
                      id:
                        type: string
                        maxLength: 100
                      externalId:
                        type: string
                        maxLength: 100
                      fullName:
                        type: string
                        maxLength: 200
                      taxDocument:
                        type: string
                        maxLength: 50
                      timezone:
                        $ref: '#/components/schemas/Timezone'
                      metadata:
                        type: object
                        propertyNames:
                          type: string
                        additionalProperties: {}
                      address:
                        type: object
                        properties:
                          line1:
                            type: string
                            minLength: 1
                          line2:
                            type: string
                          city:
                            type: string
                            minLength: 1
                          state:
                            type: string
                          postalCode:
                            type: string
                            minLength: 1
                          country:
                            type: string
                            minLength: 2
                            maxLength: 2
                          region:
                            type: string
                        required:
                          - line1
                          - city
                          - postalCode
                          - country
                    required:
                      - email
              required:
                - customers
      responses:
        '201':
          description: Success
          headers:
            X-Request-Id:
              $ref: '#/components/headers/RequestId'
            RateLimit-Limit:
              description: Maximum number of requests allowed in the current window.
              schema:
                type: string
            RateLimit-Remaining:
              description: Requests remaining in the current window.
              schema:
                type: string
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/CustomerBatch'
              example:
                successful:
                  - id: cus_1a2b3c4d
                    externalId: null
                    email: user@example.com
                failed: []
                object: customer_batch
                livemode: false
        '400':
          description: Bad request
          headers:
            X-Request-Id:
              $ref: '#/components/headers/RequestId'
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
              example:
                error:
                  type: validation_error
                  code: validation_error
                  message: The request contains an invalid parameter.
                  doc_url: >-
                    https://commet.co/docs/api-reference/2026-08-27/errors/validation_error.md
        '401':
          description: Unauthorized
          headers:
            X-Request-Id:
              $ref: '#/components/headers/RequestId'
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
              example:
                error:
                  type: authentication_error
                  code: unauthorized
                  message: A valid API key is required.
                  doc_url: >-
                    https://commet.co/docs/api-reference/2026-08-27/errors/unauthorized.md
        '403':
          description: Forbidden
          headers:
            X-Request-Id:
              $ref: '#/components/headers/RequestId'
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
              example:
                error:
                  type: authentication_error
                  code: forbidden
                  message: You do not have permission to perform this operation.
                  doc_url: >-
                    https://commet.co/docs/api-reference/2026-08-27/errors/forbidden.md
        '409':
          description: Conflict
          headers:
            X-Request-Id:
              $ref: '#/components/headers/RequestId'
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
              example:
                error:
                  type: conflict_error
                  code: idempotency_in_progress
                  message: >-
                    A request with this idempotency key is still being
                    processed.
                  doc_url: >-
                    https://commet.co/docs/api-reference/2026-08-27/errors/idempotency_in_progress.md
        '429':
          description: Too many requests
          headers:
            X-Request-Id:
              $ref: '#/components/headers/RequestId'
            RateLimit-Limit:
              description: Maximum number of requests allowed in the current window.
              schema:
                type: string
            RateLimit-Remaining:
              description: Requests remaining in the current window.
              schema:
                type: string
            RateLimit-Reset:
              description: Seconds until the rate limit window resets.
              schema:
                type: string
            Retry-After:
              description: Seconds to wait before retrying the request.
              schema:
                type: string
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
              example:
                error:
                  type: rate_limit_error
                  code: rate_limited
                  message: >-
                    Too many requests. Retry after the interval specified in the
                    Retry-After header.
                  doc_url: >-
                    https://commet.co/docs/api-reference/2026-08-27/errors/rate_limited.md
        '500':
          description: Internal server error
          headers:
            X-Request-Id:
              $ref: '#/components/headers/RequestId'
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
              example:
                error:
                  type: internal_error
                  code: internal_error
                  message: An unexpected error occurred while processing the request.
                  doc_url: >-
                    https://commet.co/docs/api-reference/2026-08-27/errors/internal_error.md
        '503':
          description: Service unavailable
          headers:
            X-Request-Id:
              $ref: '#/components/headers/RequestId'
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
              example:
                error:
                  type: internal_error
                  code: idempotency_unavailable
                  message: >-
                    Idempotency storage is temporarily unavailable. Retry with
                    the same idempotency key.
                  doc_url: >-
                    https://commet.co/docs/api-reference/2026-08-27/errors/idempotency_unavailable.md
      x-codeSamples:
        - lang: typescript
          label: TypeScript
          source: >-
            import { Commet } from "@commet/node";


            const commet = new Commet({ apiKey: "ck_xxx" });


            const customerBatch = await commet.customers.createBatch({
            customers: [{ email: "user@example.com" }] });
        - lang: python
          label: Python
          source: >-
            from commet import Commet


            commet = Commet("ck_xxx")


            customer_batch = commet.customers.create_batch(customers=[{"email":
            "user@example.com"}])
        - lang: go
          label: Go
          source: "client, err := commet.New(\"ck_xxx\")\nif err != nil {\n\tlog.Fatal(err)\n}\nctx := context.Background()\n\ncustomerBatch, err := client.Customers.CreateBatch(ctx, &commet.BatchCreateCustomersParams{\n\tCustomers: []commet.BatchCreateCustomersParamsCustomersItem{{\n\t\tEmail: \"user@example.com\",\n\t}},\n})\nif err != nil {\n\tlog.Fatal(err)\n}"
        - lang: java
          label: Java
          source: |-
            import co.commet.Commet;
            import co.commet.models.BatchCreateCustomersParamsCustomersItem;
            import co.commet.params.BatchCreateCustomersParams;
            import java.util.List;

            var commet = Commet.builder().apiKey("ck_xxx").build();

            var customerBatch = commet.customers().createBatch(
                BatchCreateCustomersParams.builder(List.of(new BatchCreateCustomersParamsCustomersItem("user@example.com", null, null, null, null, null, null, null))).build()
            );
        - lang: php
          label: PHP
          source: |-
            use Commet\Commet;

            $commet = new Commet('ck_xxx');

            $customerBatch = $commet->customers->createBatch(
                customers: [['email' => 'user@example.com']],
            );
components:
  schemas:
    Timezone:
      default: UTC
      type: string
      enum:
        - UTC
        - America/New_York
        - America/Chicago
        - America/Denver
        - America/Los_Angeles
        - America/Sao_Paulo
        - America/Mexico_City
        - America/Buenos_Aires
        - America/Santiago
        - America/Bogota
        - America/Lima
        - America/Asuncion
        - Europe/London
        - Europe/Paris
        - Europe/Berlin
        - Europe/Madrid
        - Asia/Tokyo
        - Asia/Shanghai
        - Asia/Singapore
        - Asia/Dubai
        - Australia/Sydney
    CustomerBatch:
      type: object
      properties:
        successful:
          type: array
          items:
            type: object
            properties:
              id:
                type: string
              externalId:
                anyOf:
                  - type: string
                  - type: 'null'
              email:
                type: string
            required:
              - id
              - externalId
              - email
            additionalProperties: false
        failed:
          type: array
          items:
            type: object
            properties:
              index:
                type: integer
                minimum: -9007199254740991
                maximum: 9007199254740991
              error:
                type: string
              data:
                type: object
                properties:
                  id:
                    type: string
                  externalId:
                    type: string
                  email:
                    type: string
                  fullName:
                    anyOf:
                      - type: string
                      - type: 'null'
                  taxDocument:
                    anyOf:
                      - type: string
                      - type: 'null'
                  timezone:
                    type: string
                  metadata:
                    anyOf:
                      - type: object
                        propertyNames:
                          type: string
                        additionalProperties: {}
                      - type: 'null'
                  address:
                    type: object
                    properties:
                      line1:
                        type: string
                      line2:
                        type: string
                      city:
                        type: string
                      state:
                        type: string
                      postalCode:
                        type: string
                      country:
                        type: string
                      region:
                        type: string
                    required:
                      - line1
                      - city
                      - postalCode
                      - country
                    additionalProperties: false
                required:
                  - email
                additionalProperties: false
            required:
              - index
              - error
              - data
            additionalProperties: false
        object:
          type: string
          const: customer_batch
        livemode:
          type: boolean
      required:
        - successful
        - failed
        - object
        - livemode
      additionalProperties: false
    ErrorResponse:
      type: object
      properties:
        error:
          type: object
          properties:
            type:
              type: string
            code:
              type: string
            message:
              type: string
            param:
              type: string
            details: {}
            doc_url:
              type: string
          required:
            - type
            - code
            - message
            - doc_url
          additionalProperties: false
      required:
        - error
      additionalProperties: false
  headers:
    RequestId:
      description: >-
        Server-generated identifier that correlates this response with Platform
        logs.
      schema:
        type: string
        format: uuid
  securitySchemes:
    ApiKeyAuth:
      type: apiKey
      in: header
      name: x-api-key

````

## Related topics

- [Administrar clientes](/docs/es/manage-customers.md)
- [Create customer](/docs/es/api-reference/customers/create-customer.md)
- [customer.created](/docs/es/webhooks/customer-created.md)
- [CLI](/docs/es/cli.md)
- [Create subscription](/docs/es/api-reference/subscriptions/create-subscription.md)


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