MCP invoicing connector for AI agents

FacturaSmart Pro runs an open MCP server at https://facturasmartpro.com/api/mcp with 82 operations: your AI agent (Claude, ChatGPT, Gemini, Grok or any MCP client) signs in with your account through OAuth and can add customers, draft invoices, check payments or read your calendar. Issuing asks for confirmation and records who asked for it.

What MCP is

The Model Context Protocol (MCP) is an open standard that lets AI assistants use external tools. Instead of pasting data into a chat, the assistant calls the software’s operations, with your permission.

What your agent can do

Add and look up customers and items.
Draft invoices, quotes and pro formas, and issue them once you confirm.
Check invoiced, collected and outstanding amounts per company.
Record received invoices and manage series.
Read and manage the calendar; deleting always asks first.
Import historical invoices.

Security

Connections are authorised with your account (OAuth) and scoped to all companies or one. Each connection can be read-only, is visible in the app and can be revoked at any time. Per-company API keys are available for your own integrations.

How to connect

Add https://facturasmartpro.com/api/mcp as a custom connector in Claude, ChatGPT or another MCP-capable assistant and authorise it in FacturaSmart Pro. The connector is included in the price. If you have no agent of your own, AMUN Agent (https://amunagent.com) comes preconfigured.

Frequently asked questions

Can the agent issue invoices without me knowing?

No. Issuing is a separate operation that asks for confirmation and records which agent requested it. Connections can also be read-only.