InvoiceXpress MCP for Claude, ChatGPT, and Cursor
Connect InvoiceXpress to AI assistants without installing local servers or copying API keys into each tool. InvoiceSync hosts the MCP server and controls access.
Updated June 19, 2026
What is InvoiceXpress MCP?
An InvoiceXpress MCP server translates AI assistant requests into safe InvoiceXpress queries. In InvoiceSync, that layer is hosted, read-only, and designed for accountants, finance operators, and teams managing multiple companies.
What you can ask the assistant
Invoices and clients in your assistant
Search clients, inspect documents, get account status, and open PDF links without leaving Claude, ChatGPT, or your editor.
No API keys inside AI tools
The InvoiceXpress API key stays encrypted in InvoiceSync. MCP clients use OAuth and revocable grants.
Multi-company separation
Each assistant only sees the client companies you select. This prevents mixing data between clients or legal entities.
Access model
- OAuth instead of API keys inside the AI client
- Provider credentials encrypted in InvoiceSync
- Per-client-company grants
- Read-only access, with no fiscal document creation
How to connect InvoiceXpress to an MCP client
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Add InvoiceXpress
Save the account name and API key for a client company. InvoiceSync validates before encrypting.
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Configure the MCP client
Paste the InvoiceXpress MCP URL into Claude, ChatGPT, Cursor, or another compatible client.
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Revoke whenever needed
In the dashboard, edit or revoke grants for each assistant. Revocation invalidates active tokens.
Frequently asked questions
Is InvoiceXpress MCP safe for accountants?
Yes, when configured with careful grants. InvoiceSync uses OAuth, encrypted credentials, per-client-company grants, and read-only access to reduce operational exposure.
What InvoiceXpress data can I query through MCP?
Hosted MCP supports queries for invoices, invoice-receipts, clients, account status, and PDF links for the companies you authorized.
Do I need to install a local MCP server?
No. The InvoiceXpress MCP endpoint is hosted by InvoiceSync. The user pastes the URL into the MCP client and authenticates in the browser.
Official sources
This page cites official protocol and client documentation so answers are easy to verify.