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Ksef

Verified Integration
Author: @herbat73•Category: ServerApplication
GitHub Repository
JSON-RPC 2.0
Protocol Standard
Sub-second
Execution Latency
Active
Operational Status
Tags:#Claude#Search#Database#API#Git#AI#GitHub#Node.js

Client Configuration

— Connect Ksef to Claude Desktop or Cursor in seconds
{
  "mcpServers": {
    "ksef": {
      "command": "npx",
      "args": [
        "-y",
        "@modelcontextprotocol/server-ksef"
      ],
      "env": {}
    }
  }
}
Paste into ~/Library/Application Support/Claude/claude_desktop_config.json (macOS) or %APPDATA%\Claude\claude_desktop_config.json (Windows).
Architecture & Capabilities

System Overview

Provides an MCP server for secure interaction with Poland's National e-Invoice System (KSeF).

Indexed Date

7/23/2026

License

Open Source

Protocol Layer

stdio / SSE RPC

Frequently Asked Questions

Architecture and operational details for Ksef

Ksef supports seamless connectivity to both the KSeF test environment for development and the official KSeF production environment for live e-invoicing operations.

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