inv.bg MCP by usefulapi

inv.bg MCP by usefulapi

Use inv.bg from Claude, Cursor, or any MCP client — work with your invoices, clients, items, payments and bank transactions. Hosted, no local install: connect with your own inv.bg credentials.

Live endpoint: https://inv-bg.usefulapi.io/mcp · Homepage: https://usefulapi.io/inv-bg

Connect

• Claude (claude.ai, Desktop): open Customize → Connectors, click + Add → Add custom connector, and paste https://inv-bg.usefulapi.io/mcp.
• Claude Code: claude mcp add --transport http inv-bg https://inv-bg.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": {
    "inv-bg": {
      "url": "https://inv-bg.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 inv.bg credentials.

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

On first connect you'll enter your inv.bg API token (Settings > About the Company > API access). It is validated, stored per-user, and scoped to you — no keys in config files.

Tools

Tool	Type	What it does
invbg_get_account	read	Get account
invbg_get_firm	read	Get company
invbg_list_invoices	read	List invoices
invbg_get_invoice	read	Get invoice
invbg_list_invoice_types	read	List document types
invbg_get_next_invoice_number	read	Get next invoice number
invbg_list_number_sets	read	List number sets
invbg_list_payment_methods	read	List payment methods
invbg_list_vat_exemption_reasons	read	List VAT exemption reasons
invbg_list_clients	read	List clients
invbg_get_client	read	Get client
invbg_list_client_contacts	read	List client contacts
invbg_list_items	read	List items
invbg_get_item	read	Get item
invbg_list_item_units	read	List units of measure
invbg_list_payments	read	List payments
invbg_get_payment	read	Get payment
invbg_list_bank_accounts	read	List bank accounts
invbg_list_bank_transactions	read	List bank transactions
invbg_list_cashboxes	read	List cashboxes
invbg_get_exchange_rate	read	Get exchange rate
invbg_create_client	write	Create client
invbg_update_client	write	Update client
invbg_create_item	write	Create item
invbg_create_invoice	write	Create invoice
invbg_send_invoice_email	write	Email invoice
invbg_record_invoice_payment	write	Record invoice payment
invbg_usage_status	meta	Usage status (free-tier meter)
invbg_request_feature	meta	Request a missing feature
invbg_upgrade	meta	Upgrade to Pro (unlimited*)
invbg_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 company)	$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 invbg_upgrade (it returns a Stripe Checkout link). Cancel any time with invbg_cancel_subscription: Pro continues to the end of the paid period, with no refund for the current period, and running invbg_upgrade before then undoes the cancel. Or write to [email protected].

License