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# Create client

> Add a client with one contact, optionally with the currency to bill in. Inputs, cURL, Python and Node.js examples and an example response.

Source: https://cotlet.dev/docs/api/invoice-ninja/create_client

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)

Add a client with one contact, optionally with the currency to bill in.

Invoice Ninja API: https://cotlet.dev/docs/api/invoice-ninja.md

`POST https://cotlet.dev/api/v1/invoice-ninja/clients`

Access: write.

Creates a client with one contact and returns the client ID. The client record sets the currency, tax rules, language and payment terms for every invoice you create for it, so set the currency here if it differs from your company default. The Free plan allows up to 5 clients. create_client sends nothing to the client and runs without asking first; you can archive or delete the client in Invoice Ninja.

## Parameters

| Name | Type | Required | Description |
|---|---|---|---|
| `company` | string | no | Company name, for accounts with several companies. Default: the company open when you signed in. |
| `name` | string | yes | Client or company name. |
| `contact_first_name` | string | no | First name of the contact. |
| `contact_last_name` | string | no | Last name of the contact. |
| `contact_email` | string | no | Email address that receives invoices and quotes. |
| `currency` | string | no | Three-letter currency code, e.g. USD. Default: your company currency. |

## Request

**cURL**

```bash
curl -X POST https://cotlet.dev/api/v1/invoice-ninja/clients \
  -H "Authorization: Bearer $COTLET_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"name":"Jane Doe"}'
```

**Python**

```python
result = client.call("invoice-ninja", "create_client", {"name":"Jane Doe"})
```

**Node.js**

```js
const result = await cotlet.call('invoice-ninja', 'create_client', {"name":"Jane Doe"});
```

**CLI**

```bash
cotlet call invoice-ninja create_client --data '{"name":"Jane Doe"}'
```

## Example response

```json
{
  "client_id": "Zr41kPwe8c",
  "name": "Kestrel Labs",
  "contact": "Mia Ortega",
  "email": "mia@kestrel.example",
  "currency": "USD"
}
```

Previous: [List products](https://cotlet.dev/docs/api/invoice-ninja/list_products.md)
Next: [Create invoice](https://cotlet.dev/docs/api/invoice-ninja/create_invoice.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.