Invoice Ninja MCP. Run your entire billing cycle from conversation.
Invoice Ninja connects your entire billing system to any AI client. You can manage clients, generate new invoices, track payment statuses, and audit complex tax calculations using natural conversation. Get full control over small business finances without ever leaving your development environment.
Claude 
ChatGPT 
Cursor 
Gemini 
Windsurf 
VS Code 
JetBrains 
Vercel Give Claude and any AI agent real-world access
You can list every registered customer and pull detailed CRM data like their balance, VAT ID, or contact history.
Create brand-new client profiles from scratch or update existing ones with specific details, including custom JSON payloads.
Generate draft invoices, modify line items after creation, and securely change an invoice's status from 'Draft' to 'Sent' or 'Paid'.
Fetch detailed tax math and raw total calculations for any specific invoice. This confirms your financial reporting is accurate.
Permanently delete or archive client records and invoices when they are no longer needed, keeping your accounting totals clean.
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What AI agents can do with Invoice Ninja (Invoicing & Billing) with 10 Tools
These tools let you perform every core function of an invoicing system: managing client data, generating bills, tracking payments, and auditing financial records.
Make your AI actually useful.
Add this MCP to Claude, Cursor, or Windsurf and your AI stops guessing. It gets real tools to look things up, take action, and handle the stuff you keep doing by hand.
Start using Invoice Ninja (Invoicing & Billing) MCPCreate Client
Creates a new client record in Invoice Ninja.
Create Invoice
Generates a brand-new invoice for an existing client.
Delete Client
Removes a specified client profile from Invoice Ninja.
Delete Invoice
Permanently deletes an invoice record in Invoice Ninja.
Get Client
Retrieves all detailed information about a specific client, including their balances...
Get Invoice
Fetches the full details for a single invoice number.
List Clients
Lists all current clients registered in your Invoice Ninja account.
List Invoices
Retrieves a list of invoices that meet specified criteria (e.g., date range, status).
Update Client
Modifies specific fields on an existing client profile using JSON data.
Update Invoice
Makes changes to an invoice, such as changing its status or editing line items, via...
Security and governance baked right in.
Pick your AI client below to get set up. Just create a Vinkius account, subscribe, and you're instantly up and running. We handle the entire backend infrastructure, delivering out-of-the-box support for HTTPS Streamable, SSE, and OAuth2—zero messy routing required.
Claude AI
Open Claude Settings
Go to claude.ai, click your profile icon, then navigate to Customize → Connectors.
Add Custom Connector
Click the "+" button and select Add custom connector. Paste your Vinkius endpoint URL:
https://edge.vinkius.com/[YOUR_TOKEN_HERE]/mcp
Replace [YOUR_TOKEN_HERE] with your token
from cloud.vinkius.com. For OAuth-protected servers, expand
Advanced settings to add credentials.
Start a conversation
Open a new chat. The Invoice Ninja integration is available immediately — no restart needed.
Choose How to Get Started
Build a custom MCP for your own tools, or connect a ready-made integration from our catalog.
Build Your Own
Turn any API into an MCP. Import a spec, define Agent Skills, or deploy with MCPFusion.
- Import from OpenAPI, Swagger, or YAML specs
- Create Agent Skills with progressive disclosure
- Deploy to edge with MCPFusion framework
- Built in DLP, auth, and compliance on each call
- Real time usage dashboard and cost metering
- Publish to catalog or keep private
Make Your AI Do More
Start with Invoice Ninja (Invoicing & Billing), then connect any of our 5,200+ other servers whenever your AI needs more. One click, no limits.
- Use this MCP plus 5,200+ others, all in one place
- Add new capabilities to your AI anytime you want
- Connections are secured and governed automatically
- Track usage and costs across all your servers
- Works with Claude, ChatGPT, Cursor, and more
- New servers added to the catalog weekly
Independent Platform Disclaimer: Vinkius is an independent platform and is not affiliated with, endorsed by, sponsored by, verified by, or otherwise authorized by Invoice Ninja. All third-party trademarks, logos, and brand names are the property of their respective owners. Their use on this website is strictly for informational purposes to identify service compatibility and interoperability.
VINKIUS CLOUD
Cloud Hosted
Managed infra
V8 Isolated
Sandboxed per request
Zero-Trust Proxy
No stored credentials
DLP Enforced
Policy on each call
GDPR Compliant
EU data residency
Token Compression
~60% cost reduction
The mess of modern bookkeeping
Right now, managing client billing feels like a game of digital pinball. You're in the invoicing app creating a draft, then you have to switch over to your CRM just to pull up the correct VAT ID for that client. Then, if the tax math is questioned, you jump into an accounting spreadsheet and manually audit line items. It’s constant context switching, copy-pasting data between three different tabs just to get one invoice ready.
With this MCP, all that friction disappears. You talk to your agent like you're talking to a trusted assistant. Instead of clicking through multiple dashboards, you simply ask the question—like 'What is TechCorp’s total outstanding balance?'—and the data comes back immediately, sourced from their actual records.
Invoice Ninja MCP: Full Billing Control
The most time-consuming manual steps are listing clients and then having to run a separate report for the balance. You also waste time manually moving invoices from 'Draft' to 'Sent' or verifying the tax calculations line by line.
Now, you get full control over the billing system in natural conversation. The agent manages the entire flow—from creating the profile with `create_client` to auditing every penny using `get_invoice`. It’s not just data access; it’s automated process management.
What Invoice Ninja MCP does for your AI
Running a small business means constantly juggling records: who owes money, what the balance is, and if the math on an invoice line item is right. This MCP lets you take all that complexity out of talking to your agent. You can ask it to pull up every client record, see their current outstanding balance, or list out all invoices from last quarter.
Need a new customer? Just tell it to create the profile and then run the whole billing cycle—from draft to sent—in one go. It handles updating line items, managing status changes, and even deleting old records so your books stay clean. Because this MCP is hosted on Vinkius, you connect once from any AI client and get access to all of your operational tools in a single conversation.
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How to set up Invoice Ninja MCP
The bottom line is that your AI client acts as the bridge, letting natural conversation talk directly to your billing records.
First, subscribe to this MCP and provide your Invoice Ninja Domain and API Token.
Next, connect through any compatible AI client (like Cursor or Claude) and ask the agent what you need done—e.g., 'Show me all overdue invoices for TechCorp.'
Finally, the agent executes the task using the underlying tools and gives you a conversational answer with all the required data.
Who uses Invoice Ninja MCP
This MCP is for anyone whose job involves tracking money and managing accounts. If you're tired of switching between a CRM dashboard, an invoicing app, and a spreadsheet just to audit one client's history, this is for you.
You use it daily to monitor outstanding payments and quickly manage client balances without deep diving into the software.
You generate drafts or update client details right from your coding environment, eliminating context switching between tools.
You audit complex invoice line items and tax calculations on demand to guarantee financial integrity across the entire system.
Benefits of connecting Invoice Ninja MCP
Audit tax math instantly. Instead of navigating complex financial reports to verify if an invoice's total calculation is correct, you can ask the agent for a full audit of raw totals and tax math using get_invoice.
Stay in your flow while managing clients. When you need to onboard a new customer or update their address, simply use create_client or update_client through your chat window—no dashboard switching required.
Handle the full payment workflow. You can ask the agent to create an invoice using create_invoice, and then later tell it to change that invoice's status from 'Draft' to 'Sent', all in one continuous conversation.
Maintain clean books automatically. When a client record or old invoice is finished, you use delete_client or delete_invoice directly through the agent to keep your accounting totals accurate and optimized.
Centralize all data retrieval. You don't have to run multiple reports. A single prompt can trigger list_clients to get a roster, followed by targeted calls to get_client for specific balance checks.
Invoice Ninja MCP use cases
Auditing a complex retainer contract
A bookkeeper needs to verify if the tax calculations on an invoice for 'TechCorp' are correct. Instead of manually clicking through line items, they ask their agent to audit the billing data using get_invoice. The agent returns the raw total and full tax math breakdown instantly.
Onboarding a new recurring client
A freelancer signs a big contract. They tell their agent, 'Create a new client for Acme Corp.' using create_client. The agent handles the profile creation and gets them ready to generate the first invoice.
Updating status after payment
The accounts team received confirmation that an outstanding bill was paid. Instead of logging into Invoice Ninja, they ask their agent to update the record using update_invoice, changing the status from 'Sent' to 'Paid'.
Quickly finding a customer balance
A small business owner needs to know if a client has any outstanding payments before calling them. They ask their agent to check the details of that specific client using get_client and get the current balance in seconds.
Invoice Ninja MCP tradeoffs
What to watch out for, and the recommended way to handle each one.
Manually updating records
A user tries to update a client's VAT ID by logging into Invoice Ninja, finding the right field, and manually typing the new data. This takes several minutes of clicks.
Better: Use your agent to call update_client with the JSON payload containing the correct fields and values. It does the work in seconds.
Confusing listing with querying
A user runs a basic list of invoices (list_invoices) but then has to manually scroll through hundreds of results to find one specific document.
Better: Use the agent to call get_invoice and specify the exact invoice number or client ID, getting only the targeted data immediately.
Over-relying on drafts
A user creates an invoice draft, leaves it there for weeks, but forgets which status it needs to move to when payments are confirmed.
Better: Ask the agent to manage the transition using update_invoice, explicitly changing the status from 'Draft' to 'Sent' or 'Paid'.
When to use Invoice Ninja MCP
Use this MCP if your core pain point is managing the entire financial lifecycle of invoices and clients. This is for systems of record—you need accurate, auditable data on who owes what money and why. You should use it when you need to perform CRUD operations (Create, Read, Update, Delete) on client or invoice records.
Don't use this if your goal is simply to generate a list of names without needing balance information, or if you only need basic contact info. In those cases, other simple CRM tools might be better. But if the task involves money—checking tax math, changing statuses, or auditing balances—you need this MCP because it connects conversational AI directly to your billing engine.
Frequently asked questions about Invoice Ninja MCP
How do I get all client balances using Invoice Ninja MCP? +
You can use the agent to call list_clients first, and then request specific details for any client. The system pulls up their current balance and outstanding invoices instantly.
Can I create an invoice with Invoice Ninja MCP from scratch? +
Yes, you can generate a brand-new invoice using the create_invoice tool. You just need to provide the client ID and the necessary line items in your prompt.
What if I need to change an invoice status? Should I use Invoice Ninja MCP? +
Yes, you should use the agent's update_invoice tool. Instead of logging into the app, you tell the agent to move it from 'Draft' to 'Sent', and it handles the state change securely.
Does Invoice Ninja MCP allow me to audit tax math? +
Absolutely. By calling get_invoice, the system fetches full tax calculations for any invoice, allowing you to verify financial accuracy without opening multiple reports.
How do I delete records using Invoice Ninja MCP? +
You use the agent and specify which record you want gone. You can either delete_client or delete_invoice, depending on what needs cleanup.