---
title: "List customers"
method: GET
path: "/api/external/firm/v1/companies/{company_id}/customers"
tags: ["Customers"]
deprecated: true
---

# List customers

`GET /api/external/firm/v1/companies/{company_id}/customers`

## Request

- Base URL: `https://app.pennylane.com`
- URL: `https://app.pennylane.com/api/external/firm/v1/companies/{company_id}/customers`
- Auth: OAuth 2
  - Authorization code: `https://app.pennylane.com/oauth/authorize`
  - Token URL: `https://app.pennylane.com/oauth/oauth/token` scopes: `customers:readonly`

> **Deprecated.**

> ⚠️ This endpoint is deprecated. Use [List customers (company and individual)](https://pennylane.readme.io/reference/getcustomers) from the Company API v2 instead. Your firm token can call it for any company of your firm through the `X-Company-Id` header. [Learn how to use your firm token with the Company API v2](https://pennylane.readme.io/docs/firm-api#using-your-firm-token-with-the-company-api-v2).

List customers


> ℹ️
> This endpoint requires the following scope: `customers:readonly`

## Path parameters

- `company_id` integer, required

## Query parameters

- `cursor` string
- `limit` integer
- `filter` string
- `sort` string

## Response `200`

Returns a list of both company and individual customers

- object
  - `has_more` boolean, required: Indicates whether additional results are available beyond this set. Use this flag to determine if another request is needed.
  - `next_cursor` string, nullable, required: Cursor to retrieve the next set of results. Include this value in the cursor parameter of your next request to fetch subsequent items. A `null` `next_cursor` in the response indicates no further results.
  - `items` union[], required
    - union
      - object
        - `id` integer, required
        - `name` string, required
        - `billing_iban` string, nullable, required
        - `payment_conditions` 'upon_receipt' | 'custom' | '7_days' | '15_days' | '30_days' | '30_days_end_of_month' | '45_days' | '45_days_end_of_month' | '60_days', required: Note that the `custom` option is only used on Pennylane's web app to avoid pre-filling the deadline when creating an invoice. On the API it has no effect and you will still have to provide a deadline when creating an invoice.
        - `recipient` string, required: The name of the person to whom the invoice is addressed
        - `phone` string, required
        - `reference` string, nullable, required
        - `notes` string, nullable, required
        - `vat_number` string, required
        - `reg_no` string, required
        - `ledger_account` object, nullable, required
          - `id` integer, required
          - `url` string, required
        - `emails` string[], required
        - `billing_address` object, required
          - `address` string, required
          - `postal_code` string, required
          - `city` string, required
          - `country_alpha2` string, required
        - `delivery_address` object, required
          - `address` string, required
          - `postal_code` string, required
          - `city` string, required
          - `country_alpha2` string, required
        - `created_at` string, date-time, required
        - `updated_at` string, date-time, required
        - `customer_type` 'company', required
        - `external_reference` string, required: The unique external reference assigned to this customer, assigned on creation either by you or Pennylane.
        - `billing_language` 'fr_FR' | 'en_GB' | 'de_DE' | 'es_ES', required: The language in which the customer will receive invoices. Default is `fr_FR`
      - object
        - `id` integer, required
        - `name` string, required
        - `billing_iban` string, nullable, required
        - `payment_conditions` 'upon_receipt' | 'custom' | '7_days' | '15_days' | '30_days' | '30_days_end_of_month' | '45_days' | '45_days_end_of_month' | '60_days', required: Note that the `custom` option is only used on Pennylane's web app to avoid pre-filling the deadline when creating an invoice. On the API it has no effect and you will still have to provide a deadline when creating an invoice.
        - `recipient` string, required
        - `phone` string, required
        - `reference` string, nullable, required
        - `notes` string, nullable, required
        - `first_name` string, required
        - `last_name` string, required
        - `ledger_account` object, nullable, required
          - `id` integer, required
          - `url` string, required
        - `emails` string[], required
        - `billing_address` object, required
          - `address` string, required
          - `postal_code` string, required
          - `city` string, required
          - `country_alpha2` string, required
        - `delivery_address` object, required
          - `address` string, required
          - `postal_code` string, required
          - `city` string, required
          - `country_alpha2` string, required
        - `created_at` string, date-time, required
        - `updated_at` string, date-time, required
        - `customer_type` 'individual', required
        - `external_reference` string, required: The unique external reference assigned to this customer, assigned on creation either by you or Pennylane. (Same attribute as `source_id` in the API v1)
        - `billing_language` 'fr_FR' | 'en_GB' | 'de_DE' | 'es_ES', required: The language in which the customer will receive invoices. Default is `fr_FR`

## Other responses

- `400`: Bad request
- `401`: Access token is missing or invalid
- `403`: Access to this resource forbidden
- `404`: The resource was not found

## Changes

- **2026-11-03** `256ecc544f85`: 2 warning, 1 info
  - added the new `es_ES` enum value to the `items/items/oneOf[subschema #1: Company customer]/billing_language` response property for the response status `200`
  - added the new `es_ES` enum value to the `items/items/oneOf[subschema #2: Individual customer]/billing_language` response property for the response status `200`
  - endpoint deprecated

[Operation history](https://skmtc.dev/pennylane/apis/referentials/changes/api/external/firm/v1/companies/:company_id/customers/get.md)

---

[API](https://skmtc.dev/pennylane/apis/referentials.md) - [All operations](https://skmtc.dev/pennylane/apis/referentials/llms.txt) - [OpenAPI document](https://skmtc.dev/pennylane/apis/referentials/revisions/256ecc544f85?raw)