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 770+ 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: November 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 770+ 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 billable task in Invoice Ninja.
5 fields
Check Task Existence
Returns 1 if a task with this number exists, 0 if not.
1 field
Get Client Details from e-mail
Gets the client whose contact has this e-mail. Returns false when there is none.
1 field
Get Invoices
Gets invoices by payment status, optionally for one client. Returns false when none match.
3 fields
Get Report
Runs an Invoice Ninja report and returns its columns and rows.
6 fields
Create Invoice
Creates an invoice from existing products (price and tax are taken from each product).
10 fields
Create Client
Creates a new client with a primary contact in Invoice Ninja.
13 fields
Create Recurring Invoice
Creates a recurring invoice from existing products on a billing schedule.
12 fields
Perform Action on Recurring Invoice
Start, stop, send now, restore, archive or delete a recurring invoice.
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 770+ 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.