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# Send invoice

> Email an invoice to a recipient from Holded, with a link to the customer portal. Input schema, a tools/call example and an example result.

Source: https://cotlet.dev/docs/mcp/holded/send_invoice

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)

Email an invoice to a recipient from Holded, with a link to the customer portal.

Holded MCP tools: https://cotlet.dev/docs/mcp/holded.md

MCP tool: `holded_write → send_invoice`

Access: write. Confirm: waits for the user's OK before it runs.

Sends one invoice from Holded by email or by post. The message includes a link to the invoice on the customer portal, and the email uses the mailing template linked to the document unless you pass a message. The recipient defaults to the email on the contact. By default you confirm each call; you can switch that off for this tool.

## Parameters

| Name | Type | Required | Description |
|---|---|---|---|
| `invoice_id` | string | yes | Invoice ID from list_invoices. |
| `to` | string | no | Recipient email address. Default: the email on the contact. |
| `method` | enum | no | email or post. Default: email. |
| `message` | string | no | Message text. Default: the mailing template of the document. |

## tools/call

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "holded_write",
    "arguments": {
      "operation": "send_invoice",
      "arguments": {
        "invoice_id": "inv_7d31",
        "to": "accounts@northwind.example",
        "method": "email",
        "message": "Hello, invoice INV-0045 for 968.00 was due on 2026-10-14. You can open it in the customer portal using the link below. Please let us know when it is paid."
      }
    }
  }
}
```

## Example response

```json
{
  "content": [
    {
      "type": "text",
      "text": "{ ... same JSON as structuredContent ... }"
    }
  ],
  "structuredContent": {
    "invoice_id": "inv_7d31",
    "number": "INV-0045",
    "status": "sent",
    "method": "email",
    "to": "accounts@northwind.example",
    "sent_at": "2026-10-14T09:15:00+02:00"
  },
  "isError": false
}
```

Previous: [Create invoice](https://cotlet.dev/docs/mcp/holded/create_invoice.md)
Next: [Add invoice payment](https://cotlet.dev/docs/mcp/holded/add_invoice_payment.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.