Is the Invoice Ninja MCP server free?

Yes. Activepieces is open source and free to start, and the MCP server is included on every plan, from the free cloud tier to any self-hosted deployment.

How do I connect Invoice Ninja to Claude or Cursor?

Connect Invoice Ninja in Activepieces, enable the server under Settings → MCP Server, then paste your server URL into your client config. It authenticates over OAuth on first use.

What can my agent do in Invoice Ninja?

It can call 10 tools, including Create Task, Check Task Existence, Get Client Details from e-mail, and chain them with steps in other apps inside the same run.

Is it safe to let an agent call Invoice Ninja?

Connections use OAuth2 with limited scopes and are stored under 256-bit encryption, with no API to read them back, so an agent gets scoped access rather than your keys.

Invoice Ninja MCP server

Free open-source invoicing tool

Invoice Ninja is not a separate install. One Activepieces MCP server exposes it alongside 760+ other apps, behind a single URL.

Start building See the Invoice Ninja integration

Tools: 10
Works with: Any MCP client
Auth: Custom auth
License: MIT, open source
Updated: September 2026

About the Invoice Ninja MCP server

Connect Invoice Ninja once in Activepieces and every action it ships becomes a tool your assistant can call, behind the same server URL as the rest of your apps. Your agent reaches Invoice Ninja and 760+ other apps over a single connection, on our cloud or a self-hosted install.

Tools

Invoice Ninja tools your AI can run

Once connected, your assistant can call any of these Invoice Ninja actions by asking in plain language.

Create Task
Creates a task instance in Invoice Ninja for billing purposes.
5 fields
Check Task Existence
Verify if a Task Already Exists
1 field
Get Client Details from e-mail
Gets the client details if they exist by e-mail.
1 field
Get Invoices
Gets data for invoices.
3 fields
Get Report
Gets report data from InvoiceNinja.
3 fields
Create Invoice
Creates an invoice in Invoice Ninja for billing purposes.
10 fields
Create Client
Creates a new client in InvoiceNinja.
13 fields
Create Recurring Invoice
Creates a recurring invoice in Invoice Ninja for billing purposes.
12 fields
Perform Action on Recurring Invoice
Actions include: start, stop, send_now, restore, archive, delete.
2 fields
Custom API Call
Make a custom API call to a specific endpoint
10 fields

Give your assistant Invoice Ninja

Connect Invoice Ninja once and every tool above is callable from Claude, Cursor or any MCP client, behind the same server URL as 760+ other apps. Free to start.

Get your server URL Talk to sales

Invoice Ninja MCP, answered.

No. That is the point of it. One Activepieces server exposes Invoice Ninja alongside every other piece you connect, so your client keeps a single connection.