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# Invoice Ninja MCP tools

> The Invoice Ninja MCP tools on the Cotlet server: every operation with its input schema, a tools/call example and an example result.

Source: https://cotlet.dev/docs/mcp/invoice-ninja

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)

Invoice Ninja has 14 operations on the Cotlet MCP server, in invoice_ninja_read and invoice_ninja_write. Your agent picks one in `operation`; the tool carries each operation's input schema. Open an operation for its schema and an example call.

- MCP server: `https://cotlet.dev/mcp/v1`
- MCP tools: `invoice_ninja_read`, `invoice_ninja_write`
- Connects with: Your own Invoice Ninja account on invoicing.co, with permission to create invoices, quotes, payments and clients
- Integration page: https://cotlet.dev/integrations/invoice-ninja-api-mcp-server

## Read

Return data and change nothing in the account.

| Operation | Description |
|---|---|
| [`list_clients`](https://cotlet.dev/docs/mcp/invoice-ninja/list_clients.md) | Clients with ID, contact, currency, paid to date and outstanding balance. |
| [`list_invoices`](https://cotlet.dev/docs/mcp/invoice-ninja/list_invoices.md) | Invoices with client, status, dates, amount and balance, newest first. |
| [`get_invoice`](https://cotlet.dev/docs/mcp/invoice-ninja/get_invoice.md) | One invoice with line items, contacts, linked payments and the email history. |
| [`list_quotes`](https://cotlet.dev/docs/mcp/invoice-ninja/list_quotes.md) | Quotes with client, status, valid-until date and amount. |
| [`list_payments`](https://cotlet.dev/docs/mcp/invoice-ninja/list_payments.md) | Payments with client, date, amount, type, reference and the invoices they were applied to. |
| [`list_products`](https://cotlet.dev/docs/mcp/invoice-ninja/list_products.md) | Products from your product library with description and unit price. |

## Write

Change the account. Calls marked Confirm wait for the user to approve them.

| Operation | Description |
|---|---|
| [`create_client`](https://cotlet.dev/docs/mcp/invoice-ninja/create_client.md) | Add a client with one contact, optionally with the currency to bill in. |
| [`create_invoice`](https://cotlet.dev/docs/mcp/invoice-ninja/create_invoice.md) | Create a draft invoice for a client with line items, dates and notes. |
| [`create_quote`](https://cotlet.dev/docs/mcp/invoice-ninja/create_quote.md) | Create a draft quote for a client with line items and a valid-until date. |
| [`send_invoice`](https://cotlet.dev/docs/mcp/invoice-ninja/send_invoice.md) (Confirm) | Email an invoice, or a reminder for it, to the contacts that receive it. |
| [`send_quote`](https://cotlet.dev/docs/mcp/invoice-ninja/send_quote.md) (Confirm) | Email a quote to the contacts that receive it. |
| [`convert_quote_to_invoice`](https://cotlet.dev/docs/mcp/invoice-ninja/convert_quote_to_invoice.md) (Confirm) | Turn an approved quote into an invoice and link the two. |
| [`record_payment`](https://cotlet.dev/docs/mcp/invoice-ninja/record_payment.md) (Confirm) | Record money received against an invoice, with date, type and bank reference. |
| [`cancel_invoice`](https://cotlet.dev/docs/mcp/invoice-ninja/cancel_invoice.md) (Confirm) | Cancel a sent invoice: its balance goes to zero and the client balance drops. |

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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.