Billy MCP by usefulapi

Billy MCP by usefulapi

Use Billy from Claude, Cursor, or any MCP client — invoices, bills, contacts, products, accounts, bank lines and postings, plus contacts and draft invoices. Hosted, no local install: connect with your own Billy credentials.

Live endpoint: https://billy.usefulapi.io/mcp · Homepage: https://usefulapi.io/billy

Connect

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

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

Tools

Tool	Type	What it does
billy_get_organization	read	Get the company
billy_list_contacts	read	List contacts
billy_get_contact	read	Get a contact
billy_list_invoices	read	List invoices
billy_get_invoice	read	Get an invoice
billy_list_bills	read	List bills (supplier invoices)
billy_get_bill	read	Get a bill
billy_list_products	read	List products
billy_get_product	read	Get a product
billy_list_accounts	read	List accounts (chart of accounts)
billy_list_tax_rates	read	List tax (VAT) rates
billy_list_bank_lines	read	List bank lines
billy_list_postings	read	List ledger postings
billy_create_contact	write	Create a contact
billy_create_draft_invoice	write	Create a draft invoice
billy_usage_status	meta	Usage status (free-tier meter)
billy_request_feature	meta	Request a missing feature
billy_upgrade	meta	Upgrade to Pro (unlimited*)
billy_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 billy_upgrade (it returns a Stripe Checkout link). Cancel any time with billy_cancel_subscription: Pro continues to the end of the paid period, with no refund for the current period, and running billy_upgrade before then undoes the cancel. Or write to [email protected].

License

MIT © usefulapi. Not affiliated with or endorsed by Billy.