Számlázz.hu MCP by usefulapi

Install

Pick the AI app you use, then copy the settings.

Passed 4/4 checks · What you ask goes through the maker’s server (szamlazz-hu.usefulapi.io) · ✓ Commands checked Nov 13, 2026

claude mcp add --transport http --scope user szamlazz-hu https://szamlazz-hu.usefulapi.io/mcp

{
  "mcpServers": {
    "szamlazz-hu": {
      "url": "https://szamlazz-hu.usefulapi.io/mcp"
    }
  }
}

{
  "servers": {
    "szamlazz-hu": {
      "type": "http",
      "url": "https://szamlazz-hu.usefulapi.io/mcp"
    }
  }
}

Which apps can use it

Based on how this server connects and on each app’s own docs, checked Nov 10, 2026.

Connect over the internet in

ClaudeChatGPTGooseLM StudioMsty StudioCherry StudioCursorVS Code + GitHub CopilotVisual StudioWindsurf (Devin Desktop)ZedKiroClineContinueJetBrains AI AssistantClaude CodeCodex CLIGemini CLIOpenCodenodecodeWarpLibreChatOpen WebUIRaycast

All apps, with pros and cons →

What it can do

Tool names and descriptions exactly as the server reported them on Nov 14, 2026. The maker wrote them, not us; we show them as plain text.

• szamlazz_get_invoice

  Read the data of one issued invoice (seller, buyer, lines, totals, VAT breakdown, payments) by invoice number, order number or your external id (give exactly one; for an order number with several invoices the last one is returned). Only invoices issued in this Számlázz.hu account

• szamlazz_get_invoice_pdf

  Download the PDF of one issued document (invoice, pro forma, ...) by invoice number, order number or your external id (give exactly one). Returns the totals and the PDF as an embedded resource. Számla Agent action-szamla_agent_pdf.

• szamlazz_check_taxpayer

  Look up a Hungarian taxpayer in the NAV register by the first 8 digits of the tax number (the törzsszám): whether the number is valid, the taxpayer's name, VAT status and addresses. Számla Agent action-szamla_agent_taxpayer (data from the NAV Online Invoice platform).

• szamlazz_get_receipt

  Read one issued receipt (nyugta) by receipt number: lines, payments, totals, whether it was reversed. Optionally the PDF. Számla Agent action-szamla_agent_nyugta_get.

• szamlazz_create_invoice

  ISSUES a real invoice in Számlázz.hu. A final invoice is reported to NAV (Online Számla) and can only be cancelled by a reversal (szamlazz_reverse_invoice), never deleted. kind: invoice (default), proforma (díjbekérő; not fiscal, can be deleted with szamlazz_delete_proforma), pre

• szamlazz_reverse_invoice

  ISSUES a reversal (storno) invoice that cancels one issued invoice. Fiscal: it is reported to NAV and cannot be undone; the original stays in the books. A reversal needs the invoice number of a real invoice. NEVER retried: if the result is unclear, check with szamlazz_get_invoice

• szamlazz_delete_proforma

  DELETES one pro forma invoice (díjbekérő) by its number or by its order number (give exactly one). Only pro forma invoices can be deleted; a real invoice is never touched (use szamlazz_reverse_invoice). Cannot be undone. Számla Agent action-szamla_agent_dijbekero_torlese.

• szamlazz_register_payment

  Records 1-5 payments (kifizetés) on one of your own issued invoices or pro forma invoices, which updates its paid amount and outstanding balance. By default the payments are ADDED to the existing ones; replace_existing true REPLACES all earlier payment entries of the invoice. Not

• szamlazz_create_receipt

  ISSUES a real HUF receipt (nyugta). Receipts are fiscal (NAV reporting) and can only be cancelled by szamlazz_reverse_receipt, never deleted. Give each line's whole-forint gross_total and vat_rate: the tool derives net, VAT and unit price (net + VAT equals gross exactly, as the v

• szamlazz_reverse_receipt

  ISSUES a reversal (storno) receipt that cancels one issued receipt. Fiscal and irreversible; a receipt can be reversed once, and a reversal receipt cannot be reversed. NEVER retried: if the result is unclear, check with szamlazz_get_receipt before trying again. Számla Agent actio

• szamlazz_send_receipt

  E-MAILS an already issued receipt (PDF) to a customer. Without the e-mail fields, the vendor re-sends the receipt with the settings of the earlier e-mail. The e-mail cannot be recalled. Számla Agent action-szamla_agent_nyugta_send.

Basic checksi

We check information anyone can see; we have not read the code. Checks that do not apply are left out of the count. · Checked Nov 15, 2026

• ✓ Pass

  Maker matches the repo

  The registry name was verified against the domain usefulapi.io (the registry checks domain ownership)

• ✓ Pass

  Still maintained

  Code last changed yesterday

• – Not applicable

  Has a licence

  Not applicable: a cloud server run by the owner of usefulapi.io; you don't run code from the repo

• ✓ Pass

  Endpoint responds

  Responded in 31 ms (HTTP 200)

• – Not applicable

  Sign-in with OAuth

  No sign-in needed

• ✓ Pass

  No hidden instructions in tool descriptions

  Read 11 tool descriptions and found no hidden instructions to the AI

What we check → · JSON

User reviews

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Compared with others in Accounting, finance & taxi

• More stars than 0% of the other 3260 servers in this category
• Published to the registry more recently than 95% of the other 3260 servers in this category
• Basic checks equal to or better than 100% of the other 3260 servers in this category

Compared with every active server in this category in the registry. Stars count only when the publisher owns the repo.

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Same category, other makers, commands already checked. Official ones first, then by stars.

Reading a card:↓ Downloads per weeki★ GitHub starsiThree pillars: reviews · checks · usageiUpdated = latest version published to the registryi

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README from the maker

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