Invoice Ninja MCP by usefulapi

Invoice Ninja MCP by usefulapi

Use Invoice Ninja from Claude, Cursor, or any MCP client — read and create clients, invoices, quotes, expenses, tasks and projects, convert quotes, and email invoices. Hosted, no local install: connect with your own Invoice Ninja credentials.

Live endpoint: https://invoice-ninja.usefulapi.io/mcp · Homepage: https://usefulapi.io/invoice-ninja

Connect

• Claude (claude.ai, Desktop): open Customize → Connectors, click + Add → Add custom connector, and paste https://invoice-ninja.usefulapi.io/mcp.
• Claude Code: claude mcp add --transport http invoice-ninja https://invoice-ninja.usefulapi.io/mcp, then run /mcp to log in.
• VS Code: Add to VS Code.
• Cursor and other clients: add the URL as a remote MCP server:

{
  "mcpServers": {
    "invoice-ninja": {
      "url": "https://invoice-ninja.usefulapi.io/mcp"
    }
  }
}

Add only the URL. Do not add an Authorization header or an API key to the client config: the server signs you in with OAuth, and the login page asks for your Invoice Ninja credentials.

Step-by-step setup, where to find your credentials, and FAQ: https://usefulapi.io/invoice-ninja/

On first connect you'll provide your Invoice Ninja API token (Settings → Account Management → Integrations → API tokens), plus your instance URL if you self-host. They're validated, stored per-user, and scoped to you — no keys in config files.

Tools

Tool	Type	What it does
invoiceninja_list_clients	read	List clients
invoiceninja_get_client	read	Get one client
invoiceninja_list_invoices	read	List invoices
invoiceninja_get_invoice	read	Get one invoice
invoiceninja_list_quotes	read	List quotes
invoiceninja_get_quote	read	Get one quote
invoiceninja_list_products	read	List products
invoiceninja_list_payments	read	List payments
invoiceninja_list_expenses	read	List expenses
invoiceninja_list_vendors	read	List vendors
invoiceninja_list_tasks	read	List tasks
invoiceninja_list_projects	read	List projects
invoiceninja_list_recurring_invoices	read	List recurring invoices
invoiceninja_create_client	write	Create a client
invoiceninja_update_client	write	Update a client
invoiceninja_create_invoice	write	Create an invoice
invoiceninja_update_invoice	write	Update an invoice
invoiceninja_mark_invoice_sent	write	Mark an invoice sent
invoiceninja_email_invoice	write	Email an invoice to the client
invoiceninja_create_quote	write	Create a quote
invoiceninja_convert_quote_to_invoice	write	Convert a quote to an invoice
invoiceninja_create_expense	write	Create an expense
invoiceninja_create_task	write	Create a task / log time
invoiceninja_create_project	write	Create a project
invoiceninja_usage_status	meta	Usage status (free-tier meter)
invoiceninja_request_feature	meta	Request a missing feature
invoiceninja_upgrade	meta	Upgrade to Pro (unlimited*)
invoiceninja_cancel_subscription	meta	Cancel the Pro subscription

read tools are read-only; write tools mutate data (clients should confirm them); meta tools report usage, manage your subscription or send a feature request.

Pricing

Plan	Price	Limit
Free	$0	50 tool calls / month
Pro (per user)	$9/mo or $90/yr (2 months free)	Unlimited*

*Pro has a fair use limit of 10,000 tool calls a month on this server. For more, write to [email protected].

Pro covers this server only. Subscribe with invoiceninja_upgrade (it returns a Stripe Checkout link). Cancel any time with invoiceninja_cancel_subscription: Pro continues to the end of the paid period, with no refund for the current period, and running invoiceninja_upgrade before then undoes the cancel. Or write to [email protected].

License

MIT © usefulapi. Not affiliated with or endorsed by Invoice Ninja.