poland-invoice

Let AI agents submit Polish structured invoices (faktura ustrukturyzowana) to KSeF, the national e-invoice system.

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What it can do

  • Create Invoice: Issue a Poland structured e-invoice (faktura ustrukturyzowana, schema FA(3)) through KSeF 2.0 — Krajowy System e-Faktur, the national government e-invoice API. Bring your own credentia
  • Query Invoice: Fetch a Poland KSeF invoice by its KSeF number (the numer KSeF assigned by the government system, returned by create_invoice). Status values: ACCEPTED (the invoice exists in the nationa

What data it sees

Do you need an account

No: the server works without sign-in

Let AI agents submit Polish structured invoices (faktura ustrukturyzowana) to KSeF, the national e-invoice system. Stateless remote MCP server: bring your own KSeF access, it stores nothing. Build FA(3) XML with VAT math and submit via the encrypted KSeF 2.0 flow.

How to connect

How to connect poland-invoice to Claude

The server address to paste into Claude settings:

https://poland-invoice--wishpool.run.tools

  1. Open Claude (claude.ai or the desktop app).
  2. Go to Settings → Connectors.
  3. Click Add custom connector.
  4. Paste the server address copied below into Remote MCP server URL and click Add.
  5. In a chat, click + → Connectors and switch the new connector on.

Custom connectors are available on Free, Pro, Max, Team and Enterprise plans (Free is limited to one). On Team and Enterprise an organization Owner adds the connector first under Organization settings → Connectors.

Authorization

After you click Add, a sign-in window for the service opens. Sign in with your own account and approve access. Claude never sees your password.

How to connect poland-invoice to ChatGPT

The server address to paste into ChatGPT settings:

https://poland-invoice--wishpool.run.tools

  1. Open ChatGPT in a browser (chatgpt.com). A Plus, Pro, Business, Enterprise or Edu plan is required.
  2. Turn on developer mode once: Settings → Apps → Advanced settings → Developer mode.
  3. Open Settings → Connectors and click Create.
  4. Fill in the form: Name (anything), Description (one line about what the service does), MCP server URL (copy it below).
  5. Under Authentication choose OAuth if the service requires sign-in, otherwise None. Click Create.
  6. In a new chat open + → Apps/Connectors and enable the connector.

OpenAI has renamed this section before (Connectors → Apps/Plugins). If the label differs, search settings for "developer mode". On Business/Enterprise workspaces an admin must allow custom connectors first.

Authorization

On first use ChatGPT opens the service's sign-in window. Sign in and approve access.

How to connect poland-invoice to Cursor

The server address to paste into Cursor settings:

https://poland-invoice--wishpool.run.tools

Fastest: click Open in Cursor below and confirm the prompt.

Manually:

  1. In Cursor open Settings → Cursor Settings → MCP and click Add new global MCP server.
  2. Paste the JSON copied below into ~/.cursor/mcp.json (per project: .cursor/mcp.json in the repo root).
  3. Save the file. The server appears in the MCP list; authorize it there if asked.

Authorization

If the service needs sign-in, an authorize button appears next to the server in the MCP list.

Server tool list (2)

Raw names from tools/list. Only developers need these.

create_invoiceIssue a Poland structured e-invoice (faktura ustrukturyzowana, schema FA(3)) through KSeF 2.0 — Krajowy System e-Faktur, the national government e-invoice API. Bring your own credentials via headers: x-ksef-token (a KSeF authorization token you self-mint in the Ministry of Finance taxpayer portal at ksef.podatki.gov.pl) and x-ksef-nip (your 10-digit seller NIP). Runs against the MoF TEST environment by default (no fiscal effect); set header x-ksef-mode: production to submit real invoices to KSeF (or demo for the demo environment). The server opens an encrypted online session, submits the FA(3) invoice, closes the session, and returns the assigned KSeF number. Amounts are in PLN; each line item carries a NET unit price and a Polish VAT rate (23, 8, 5, or 0) — the server computes per-rate net/VAT and the invoice gross total.
query_invoiceFetch a Poland KSeF invoice by its KSeF number (the numer KSeF assigned by the government system, returned by create_invoice). Status values: ACCEPTED (the invoice exists in the national KSeF repository under your NIP — its presence is the fiscal proof). Authenticates with your KSeF token; safe to call anytime.