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Create invoices and customers and record payments in BillingEngine from any MCP client.
About
Create invoices and customers and record payments in BillingEngine from any MCP client.
Security Report
Valid MCP server (3 strong, 3 medium validity signals). No known CVEs in dependencies. Package registry verified. Imported from the Official MCP Registry.
6 files analyzed · 1 issue found
Security scores are indicators to help you make informed decisions, not guarantees. Always review permissions before connecting any MCP server.
Permissions Required
This plugin requests these system permissions. Most are normal for its category.
What You'll Need
Set these up before or after installing:
Environment variable: BILLINGENGINE_API_KEY
How to Install
Add this to your MCP configuration file:
{
"mcpServers": {
"com-billingengine-mcp": {
"env": {
"BILLINGENGINE_API_KEY": "your-billingengine-api-key-here"
},
"args": [
"-y",
"billingengine-mcp"
],
"command": "npx"
}
}
}Documentation
View on GitHubFrom the project's GitHub README.
BillingEngine MCP server
Create customers and invoices, look up open invoices and record payments in BillingEngine by talking to Claude, Cursor or any other MCP client:
"Create an invoice for Acme Painting over 100 euros."
"Which invoices are overdue?"
"Acme paid invoice 2610030028, record the payment."
BillingEngine is invoicing software for freelancers and small businesses with e-invoicing (EN 16931, XRechnung, ZUGFeRD / Factur-X). The server is a thin layer over the BillingEngine API and runs on your computer.
Requirements
- Node.js 20 or newer
- A BillingEngine account on a paid plan. The API is not available in the Free plan.
- Your API key from Settings > API in BillingEngine
Setup
Claude Desktop
Add this to claude_desktop_config.json:
{
"mcpServers": {
"billingengine": {
"command": "npx",
"args": ["-y", "billingengine-mcp"],
"env": { "BILLINGENGINE_API_KEY": "your-api-key" }
}
}
}
Claude Code
claude mcp add billingengine --env BILLINGENGINE_API_KEY=your-api-key -- npx -y billingengine-mcp
Cursor and other clients
Use the same command, args and env as above in the MCP settings of your client.
Tools
| Tool | What it does |
|---|---|
find_customers | Searches customers by company, name or email |
create_customer | Creates a customer |
update_customer | Changes a customer |
create_invoice | Creates a draft invoice for a customer |
update_invoice | Changes a draft invoice |
list_invoices | Lists invoices, filtered by status, customer, number or date |
get_invoice | Returns one invoice with items and payment status |
download_invoice | Saves the PDF or the XML e-invoice to your Downloads folder |
record_payment | Records a payment for sent invoices |
list_payments | Lists payments, optionally for one invoice |
What it does and does not do
- Invoices are created as drafts. Nothing is sent to your customers; you review and send the invoice in BillingEngine. Every result contains a link to open the draft.
- Prices are net. Number, language, texts, VAT treatment and payment terms come from your account settings, exactly as in the invoice form.
- Nothing can be deleted through this server.
- New invoices count towards the monthly invoice maximum of your plan.
- The API allows 60 requests per minute per key.
- Your key stays on your computer and is only sent to BillingEngine.
If a key is ever exposed, generate a new one under Settings > API. The old key stops working immediately. The settings also show when the key was last used.
Configuration
| Variable | Meaning |
|---|---|
BILLINGENGINE_API_KEY | Your API key (required) |
BILLINGENGINE_URL | Base URL, defaults to https://www.billingengine.com |
Development
npm install
npm run build
BILLINGENGINE_API_KEY=... node dist/index.js
License
MIT. BillingEngine itself is a commercial service; see billingengine.com.
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