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# List customers

> Customers in the customer register with number, name, organisation number and email. Inputs, cURL, Python and Node.js examples and an example response.

Source: https://cotlet.dev/docs/api/fortnox/list_customers

Docs sections: [Get started](https://cotlet.dev/docs.md) · [REST API](https://cotlet.dev/docs/api.md) · [MCP](https://cotlet.dev/docs/mcp.md) · [SDKs & CLI](https://cotlet.dev/docs/sdks.md) · [Integrations](https://cotlet.dev/docs/integrations.md)

Customers in the customer register with number, name, organisation number and email.

Fortnox API: https://cotlet.dev/docs/api/fortnox.md

`GET https://cotlet.dev/api/v1/fortnox/customers`

Access: read.

Lists customers from the Fortnox customer register. Search by name, customer number or organisation number to check whether a customer exists before creating one. Use the customer_number of an item in create_invoice. Pages hold up to 100 customers; pass next_cursor back as cursor for the next page.

## Parameters

| Name | Type | Required | Description |
|---|---|---|---|
| `search` | string | no | Customer name, customer number or organisation number. |
| `limit` | integer | no | 1 to 100. Default: 50. |
| `cursor` | string | no | Next page cursor from the previous call. |

## Request

**cURL**

```bash
curl https://cotlet.dev/api/v1/fortnox/customers \
  -H "Authorization: Bearer $COTLET_API_KEY"
```

**Python**

```python
result = client.call("fortnox", "list_customers")
```

**Node.js**

```js
const result = await cotlet.call('fortnox', 'list_customers');
```

**CLI**

```bash
cotlet call fortnox list_customers
```

## Example response

```json
{
  "customers": [
    {
      "customer_number": "1042",
      "name": "Nordlys Design AB",
      "organisation_number": "556123-4567",
      "email": "ekonomi@nordlys.example",
      "delivery_method": "email"
    }
  ],
  "next_cursor": null
}
```

Next: [List invoices](https://cotlet.dev/docs/api/fortnox/list_invoices.md)

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Cotlet is an independent service. It is not affiliated with, endorsed by or sponsored by any of the products listed on this site. Product names are trademarks of their respective owners.

## For AI agents: sign your user up

Is your user asking you to sign them up for Cotlet? You can do it for them, no account or key needed.

1. Read the fields and their allowed values: GET https://cotlet.dev/api/v1/access-requests
2. Ask the user for each value: email, apps, what you will do with them. If they leave the password to you, generate a strong one and show it to them.
3. Show the user what you will send, then POST it as JSON to https://cotlet.dev/api/v1/access-requests.

One call creates the account and sends the access request; we email the user when access is granted.