Mini Accountant MCP server

What it does

A hosted MCP server that connects your AI assistant to Mini Accountant, a small business accounting tool. Through OAuth authentication, your assistant can manage invoices, customers, expenses, services, and view analytics without requiring local setup or API keys.

• Create and manage invoices with line items and customer details directly from your assistant.
• Record and categorize business expenses, then retrieve expense reports for specific date ranges.
• Query financial data like tax estimates, transaction histories, and customer payment information for a given period.

Tools this server exposes

Tool	Does
create_invoice	Create a new invoice with customer and line-item details.
read_invoice	Fetch invoice details by ID.
update_invoice	Modify an existing invoice, including customer, positions, and transactions.
delete_invoice	Delete an invoice.
create_customer	Create a new customer record.
read_customer	Fetch customer details by ID.
update_customer	Modify customer information and payment methods.
delete_customer	Delete a customer record.
create_expense	Record a new business expense.
read_expense	Fetch expense details by ID.
update_expense	Modify an existing expense record.
delete_expense	Delete an expense.
list_expenses	Retrieve expenses for a specified date range.
manage_services	Create, read, update, and delete reusable product or service catalogue items.
manage_payment_settings	Manage payment-method documents that customers reference.
analytics_query	Run reporting queries to retrieve invoices, transactions, and expenses for a date range.
estimate_tax	Calculate tax estimates for a specified period.
read_account	Fetch user profile and app settings.
update_account	Modify user profile and app settings.

Before you enable it

An MCP server runs with whatever access you give it. Start with a development account rather than production, and check which tools the server exposes before you let an agent call them unattended.