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Invoice Ninja MCP Server

Connect your account, then chat with AI to run tools.

Invoice Ninja is an open-source invoicing and billing platform for freelancers and small businesses. Create and manage invoices, track payments, handle clients and projects, manage expenses, and automate billing workflows for streamlined financial operations.

24 tools
Agent guide included
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AI Skill
SKILL.md

Domain knowledge for Invoice Ninja — workflow patterns, data models, and gotchas for your AI agent.

Invoice Ninja

Invoice Ninja is an open-source invoicing and billing platform for freelancers and small businesses. Create and manage invoices, track payments, handle clients and projects, manage expenses, and automate billing workflows.

Data Model

  • Bank Transactions — bank transaction imports.
  • Clients — customers.
  • Credits — credit balances.
  • Expenses — expense records.
  • Invoices — invoices.
  • Payments — payment records.
  • Products — product catalog.
  • Projects — projects for time tracking.
  • Purchase Orders — purchase orders.
  • Quotes — quotes/estimates.
  • Recurring Expenses — recurring expense templates.
  • Recurring Invoices — recurring invoice templates.
  • Tasks — billable tasks.
  • Vendors — vendor records.

Gotchas

  • Self-hosted vs cloud: API base URL differs for self-hosted (your domain) vs cloud (invoicing.co).
  • Entity IDs: List endpoints return IDs; use them for fetch/detail calls.

Tools in this Server (24)

Fetch Bank Transactions

Discovered via endpoint probing with high confidence

Fetch Clients

Discovered via endpoint probing with high confidence

Fetch Credits

Discovered via endpoint probing with high confidence

Fetch Expenses

Discovered via endpoint probing with high confidence

Fetch Invoices

Discovered via endpoint probing with high confidence

Fetch Payments

Discovered via endpoint probing with high confidence

Fetch Products

Discovered via endpoint probing with high confidence

Fetch Projects

Discovered via endpoint probing with high confidence

Fetch Purchase Orders

Discovered via endpoint probing with high confidence

Fetch Quotes

Discovered via endpoint probing with high confidence

Invoiceninja List Bank Transactions

Collection endpoint, path_params=[]

Invoiceninja List Clients

Collection endpoint, path_params=[]

Invoiceninja List Credits

Collection endpoint, path_params=[]

Invoiceninja List Expenses

Collection endpoint, path_params=[]

Invoiceninja List Invoices

Collection endpoint, path_params=[]

Invoiceninja List Payments

Collection endpoint, path_params=[]

Invoiceninja List Products

Collection endpoint, path_params=[]

Invoiceninja List Projects

Collection endpoint, path_params=[]

Invoiceninja List Purchase Orders

Collection endpoint, path_params=[]

Invoiceninja List Quotes

Collection endpoint, path_params=[]

Invoiceninja List Recurring Expenses

Collection endpoint, path_params=[]

Invoiceninja List Recurring Invoices

Collection endpoint, path_params=[]

Invoiceninja List Tasks

Collection endpoint, path_params=[]

Invoiceninja List Vendors

Collection endpoint, path_params=[]

Frequently Asked Questions

What is the Invoice Ninja MCP server?

Invoice Ninja is an open-source invoicing and billing platform for freelancers and small businesses. Create and manage invoices, track payments, handle clients and projects, manage expenses, and automate billing workflows for streamlined financial operations. It provides 24 tools that AI agents can use through the Model Context Protocol (MCP).

How do I connect Invoice Ninja to my AI agent?

Add the MCPBundles server URL to your MCP client configuration (Claude Desktop, Cursor, VS Code, etc.). The URL format is: https://mcp.mcpbundles.com/bundle/invoiceninja. Authentication is handled automatically.

How many tools does Invoice Ninja provide?

Invoice Ninja provides 24 tools that can be called by AI agents, along with a SKILL.md that gives your AI agent domain knowledge about when and how to use them.

What authentication does Invoice Ninja require?

Invoice Ninja uses API Key. Invoice Ninja requires credentials. Connect via MCPBundles and authentication is handled automatically.

Setup Instructions

Connect Invoice Ninja to any MCP client in minutes

https://mcp.mcpbundles.com/bundle/invoiceninja

What is MCP?

Model Context Protocol lets AI tools call external capabilities securely through a single URL. This bundle groups tools behind an MCP endpoint that many clients can use.

Use this bundle in 3 steps

  1. Copy the MCP URL above
  2. Open your AI tool and add a new MCP/connector
  3. Paste the URL and follow any auth prompts

Claude Desktop Users

Skip the manual setup! Use the .mcpb file format for one-click installation. Check the Claude Desktop tab for setup instructions.

Pick your tool tab for exact steps

Select ChatGPT, Cursor, Claude Code, or another tab for copy-paste config.

Ready to use Invoice Ninja?

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Invoice Ninja MCP Server & Skill — 24 Tools