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Ksef Pl MCP server

by cmendezs·io.github.cmendezs/mcp-ksef-pl·v0.10.1·3 stars
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Polish e-invoicing MCP: KSeF API v2, FA(3)/FA(2) XML, Peppol BIS 3.0, NIP/REGON validation.

A92/100grade A
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Safety scan
A92/100

full report

Adoption
Growing

3 stars91 downloads/wk

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If you have run it, two minutes of your experience saves the next person an afternoon.

Ksef Pl tools (1, 1 write)

write = sends, deletes, buys or posts

Read from the package source without running it. The installed server may list more.

  • run_check_3write action

    CHECK 3 — Core model field availability (InvoiceDocument field coverage).

Public scan report

scanner v0.1.10 · 2026-10-03 · same rubric, same numbers if you re-run it

no findings
  • Code scan23 source files scanned25/25
  • –Live reliabilityno gateway calls yet and no remote to proben/a
  • –Tool poisoningtools not inspected (local package is not executed); not countedn/a
  • Auth qualitylocal package, no credentials required12/15
  • Maintenancelast push 22 days ago15/15
  • Maintainer identityregistry namespace matches repository owner; GitHub account older than a year8/10
Overall 92/100. Components that don't apply are left out of the denominator. Any critical finding is an F.RubricAppeal a findingJSON

How Ksef Pl compares

Against every graded MCP server, from our own scans and uptime checks. Updated after each scan run.

Safety score
92/100
higher than 93% of 48,243 servers
Tools
1
the typical server has 7
Tools that change things
100%
typical: 0%. Fewer write tools means less an agent can break
GitHub stars
3
more than 80% of 28,706 servers
Downloads a week
91
more than 60% of 12,306 servers with a package

What its tools let an agent do: 1 run or deploy

Install Ksef Pl in Claude Code, Cursor or VS Code

claude mcp add mcp-ksef-pl -- uvx mcp-ksef-pl
Add to Cursor

What the publisher says

From the Ksef Pl repository's README, as published. We do not edit it. Read it on GitHub

mcp-ksef-pl 🇵🇱

English | Polski

<!-- mcp-name: io.github.cmendezs/mcp-ksef-pl -->

A Python MCP server providing tools for Polish electronic invoicing compliant with KSeF (FA(2)) and Peppol BIS Billing 3.0 / EN 16931. It enables AI agents (Claude, IDEs) to generate, validate, and submit invoices to the Krajowy System e-Faktur (KSeF), as well as validate Polish tax identifiers (NIP and REGON).

Introduction

This package is built on mcp-einvoicing-core, the shared base library for European e-invoicing MCP servers. It provides an OAuth2 HTTP client, token cache, data models, logging utilities, and an exception hierarchy.

mcp-einvoicing-core is installed automatically as a dependency, no additional step is required.

Installation

Via PyPI (recommended)

pip install mcp-ksef-pl

Or without prior installation using uvx:

uvx mcp-ksef-pl

From source

git clone https://github.com/cmendezs/mcp-ksef-pl.git
cd mcp-ksef-pl
uv sync --all-extras

Configuration (environment variables)

The EUSR/TSR reporting and MLS tools additionally require the [xslt2] extra (pip install "mcp-ksef-pl[xslt2]") for Schematron validation.

Claude Desktop integration

Add the following configuration to your claudedesktopconfig.json file:

{
  "mcpServers": {
    "ksef-pl": {
      "command": "uvx",
      "args": ["mcp-ksef-pl"],
      "env": {
        "KSEF_ENVIRONMENT": "test",
        "KSEF_SESSION_TOKEN": "<your-ksef-session-token>",
        "KSEF_NIP": "<your-nip>"
      }
    }
  }
}

Cursor integration

Cursor supports MCP servers via stdio. Add the configuration to:

  • Globally (all projects): ~/.cursor/mcp.json
  • Per project (this repository only): .cursor/mcp.json
{
  "mcpServers": {
    "ksef-pl": {
      "command": "uvx",
      "args": ["mcp-ksef-pl"],
      "env": {
        "KSEF_ENVIRONMENT": "test",
        "KSEF_SESSION_TOKEN": "<your-ksef-session-token>",
        "KSEF_NIP": "<your-nip>"
      }
    }
  }
}

Reload the Cursor window (Ctrl+Shift+P → Reload Window) after saving changes.

Kiro integration

Kiro supports MCP servers through a dedicated configuration file:

  • Globally: ~/.kiro/settings/mcp.json
  • Workspace: .kiro/settings/mcp.json

Shortened. The full README is on GitHub.

Nothing above is checked by us. What we check is on the safety report.

Ksef Pl: common questions

Is Ksef Pl MCP server safe?
Yes, by our scan: it is graded A (92/100). Read the Ksef Pl safety report
How do I install Ksef Pl?
It runs on your machine. Copy the Claude Code, Cursor, VS Code or Claude Desktop config from the install section.
Does Ksef Pl need an API key?
No secret keys are declared. It reads 4 settings from the environment.
Is Ksef Pl maintained?
The last commit was 54 days ago (2026-09-12). The latest release is v0.10.1.
How does Ksef Pl compare with other MCP servers?
safety score 92/100 (higher than 93% of 48,243 servers); tools 1 (the typical server has 7); tools that change things 100% (typical: 0%. Fewer write tools means less an agent can break). Full comparison.

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