Billy
Billy MCP server (billy-mcp-server) enables MCP clients to manage accounting data with tools like list_invoices, create_invoice, list_contacts, list_bills, create_daybook_transaction, and get_company_info. Developers connect to test handshakes, responses, and protocol compliance while listing accounts, products, and daybook entries. Testers use it to validate implementations and debug client-server interactions.
Overview
Billy (billy-mcp-server) is an MCP server that exposes Billy accounting tools for protocol-driven interactions. Developers connect MCP clients to access functions like listing invoices, managing contacts, and tracking daybook transactions. It handles core protocol elements such as discovery, sessions, and tool execution to enable reliable accounting automation.
Key Capabilities
Billy supports server discovery, session establishment, and tool listing with its full set of accounting functions. Users can list and create invoices via list_invoices, get_invoice, and create_invoice; manage contacts with list_contacts, get_contact, and create_contact; track bills using list_bills; review accounts through list_accounts; handle journal entries with list_daybook_transactions and create_daybook_transaction; inventory products via list_products; and retrieve company details with get_company_info. This setup isolates protocol testing from business logic while providing real-world tool responses.
Use Cases
Test MCP client implementations by calling tools like list_invoices or create_contact to verify request handling and responses. Debug client-server interactions using empty or populated tool lists in controlled accounting scenarios. Integrate into CI/CD pipelines to validate endpoint connectivity and tool functionality before production deployment. Prototype AI agents that automate invoice creation or contact management during early development.
Who This Is For
Developers building MCP clients for accounting integrations. QA engineers validating protocol compliance with live tools. Teams setting up minimal MCP environments for Billy accounting data access.