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SuperFaktura MCP by usefulapi

io.usefulapi/superfaktura in the official MCP registry. Endpoint https://superfaktura.usefulapi.io/mcp. Source: github.com/m190/usefulapi-mcp.

The registry describes it as: Read SuperFaktura invoices, clients, expenses, bank and stock; create clients, expenses and drafts.

Connect it

The endpoint answers MCP over HTTP; that is how we read it. Add it to your client:

claude mcp add --transport http superfaktura https://superfaktura.usefulapi.io/mcp

{
  "mcpServers": {
    "superfaktura": {
      "url": "https://superfaktura.usefulapi.io/mcp"
    }
  }
}

code --add-mcp '{"name":"superfaktura","type":"http","url":"https://superfaktura.usefulapi.io/mcp"}'

Some servers ask you to sign in the first time a client connects, or want a key from the people who run them; the server's own docs say which.

Let Claude Code check servers as it adds them

With the free lazaretto-guard plugin installed, when Claude Code adds a server for you or writes one into an MCP config, the plugin reads the server's tools first and asks you if one of our rules matches. Install it, restart Claude Code, then ask it to run the command above.

claude plugin marketplace add jamesdfinance-dev/lazaretto-plugins
claude plugin install lazaretto-guard@lazaretto-plugins

Tools it advertises

superfaktura_get_company superfaktura_list_invoices superfaktura_get_invoice superfaktura_list_clients superfaktura_get_client superfaktura_list_contact_persons superfaktura_list_expenses superfaktura_get_expense superfaktura_list_expense_categories superfaktura_list_bank_accounts superfaktura_list_bank_moves superfaktura_list_cash_registers superfaktura_get_cash_register superfaktura_list_stock_items superfaktura_get_stock_item superfaktura_list_stock_movements superfaktura_list_tags superfaktura_list_sequences superfaktura_list_countries superfaktura_get_response_by_checksum superfaktura_create_client superfaktura_add_contact_person superfaktura_create_tag superfaktura_create_expense superfaktura_create_invoice

Tool changes

We compare every full read of this server with the one before. No change in what its tools say has been seen since we started keeping this record on 2026-10-30.

Fingerprint of its tools at our last full read (2026-11-01): 7966041f5759ed23. A client can hash the tools it is served the same way and compare; the full value and a hash per tool are in this page as JSON.

Run this server? Show the check in your README

The badge reflects the latest weekly read:

[![MCP tool check](https://lazaretto.dev/mcp-registry/io-usefulapi-superfaktura/badge.svg)](https://lazaretto.dev/mcp-registry/io-usefulapi-superfaktura)

How this was checked

Lazaretto connects to the endpoint the way any MCP client does, asks the server to introduce itself and list its tools, and reads every name, description, parameter schema and server instruction for tool poisoning: hidden directive blocks, orders to read local secrets, parameters built to carry secrets or the conversation out, orders that redirect another server's tools, and invisible characters. It never calls a tool. What we found across the registry.

To run the same check every time Claude Code adds a server, install the free lazaretto-guard plugin. Browse every server in the index.

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