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# Create client

> Add a client to your Fakturownia client list. Input schema, a tools/call example and an example result.

Source: https://cotlet.dev/docs/mcp/fakturownia/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 to your Fakturownia client list.

Fakturownia (InvoiceOcean) MCP tools: https://cotlet.dev/docs/mcp/fakturownia.md

MCP tool: `fakturownia_write → create_client`

Access: write.

Creates a client record. Only name is required. A private person needs company set to false and a last name. Nothing is sent to anyone and the client can be edited or deleted in the app, so create_client runs without asking first.

## Parameters

| Name | Type | Required | Description |
|---|---|---|---|
| `name` | string | yes | Client name. |
| `tax_no` | string | no | Tax number (NIP). |
| `email` | string | no | Email address for sending invoices. |
| `street` | string | no | Street and number. |
| `post_code` | string | no | Postal code. |
| `city` | string | no | City. |
| `country` | string | no | Country code. |
| `company` | boolean | no | false for a private person. Default: true. |
| `last_name` | string | no | Needed when company is false. |

## tools/call

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "fakturownia_write",
    "arguments": {
      "operation": "create_client",
      "arguments": {
        "name": "Jane Doe"
      }
    }
  }
}
```

## Example response

```json
{
  "content": [
    {
      "type": "text",
      "text": "{ ... same JSON as structuredContent ... }"
    }
  ],
  "structuredContent": {
    "id": 4832,
    "name": "Harbor Print Ltd",
    "tax_no": "7654321098",
    "email": "office@harborprint.example",
    "company": true
  },
  "isError": false
}
```

Previous: [Get KSeF status](https://cotlet.dev/docs/mcp/fakturownia/get_ksef_status.md)
Next: [Create invoice](https://cotlet.dev/docs/mcp/fakturownia/create_invoice.md)

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## 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.