SuperFaktura MCP server

Read SuperFaktura invoices, clients, expenses, bank and stock; create clients, expenses and drafts. Hosted by usefulapi: connect it to Claude, ChatGPT, Cursor or any MCP client.

Connect SuperFaktura50 free tool calls a month

What can I ask?

Turn on the SuperFaktura connector, then ask in plain words. The AI picks the tools.

Which of my issued invoices are still unpaid, and how much is owed?
Show the expenses I recorded last month with the amounts.
What is the current balance in my cash register?
Add a new client called Acme Ltd with email billing@acme.com.

What you can do with SuperFaktura in Claude and ChatGPT

For freelancers and small businesses who invoice their clients with SuperFaktura.

Find invoices that are still unpaid

The AI lists issued documents with client, totals and payment status, opens single ones, and adds up what clients still owe.

Review the expenses you recorded

The AI lists received documents by status (issued, partially paid, paid, overdue) with amounts, VAT and supplier, and sorts them by expense category.

Check bank moves and cash register balances

The AI reads imported bank moves with amount, variable symbol and matching state, and the balance of each cash register.

Check stock items and their movements

The AI searches warehouse items by name or SKU with price and quantity in stock, and reads the stock log of one item.

Add a client with a contact person

The AI checks the address book first, then adds a new client and a contact person with name and e-mail. Nothing is sent to them.

Changes data

Record an expense or prepare a draft invoice

The AI records a received expense as unpaid, or creates one draft, quote, order or proforma for you to review. Nothing is sent.

Changes data

How do I connect SuperFaktura?

Before you connect

The login page asks for your SuperFaktura e-mail (the API user), SuperFaktura API key and Instance.

Optional: Company id.

In SuperFaktura open Tools → API access (Nástroje → API prístup) for the e-mail, API key and company id. API access is only included in the top SuperFaktura plan (the price list shows API as not available on the lower plans), so a lower plan cannot connect. The company id is optional (leave it empty for your default company). Pick the instance you log in to (SK, CZ or AT). A dedicated user with the Administrator role is recommended. SuperFaktura allows 1000 API requests per day and 31000 per month per account. Your key is used only to call the SuperFaktura API on your behalf; it is never shown to anyone.

Claude claude.ai · Desktop

Open Customize → Connectors, then click + Add → Add custom connector.
Enter the name SuperFaktura and this URL, then click Add:
https://superfaktura.usefulapi.io/mcp
Claude opens the login page: enter your SuperFaktura e-mail (the API user), SuperFaktura API key and Instance.
In a chat, click + → Connectors and turn on SuperFaktura.

Team and Enterprise: an Owner adds the connector for the organization first.

ChatGPT chatgpt.com

Open Plugins, click +, then Add custom MCP server.
Enter the name SuperFaktura and this URL, choose OAuth as the authentication, confirm the warning and create it:
https://superfaktura.usefulapi.io/mcp
ChatGPT opens the login page: enter your SuperFaktura e-mail (the API user), SuperFaktura API key and Instance.
In Plugins, install SuperFaktura, then choose it in a chat.

No Add custom MCP server option? It depends on your account or workspace settings: see OpenAI's guide.

Claude Code

Run this command, then run /mcp in Claude Code to log in:

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

Cursor

Add to Cursor or add this to ~/.cursor/mcp.json:

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

VS Code

Add to VS Code or add this to .vscode/mcp.json:

{
  "servers": {
    "superfaktura": {
      "type": "http",
      "url": "https://superfaktura.usefulapi.io/mcp"
    }
  }
}

Codex

Run these commands. The second one opens the login page:

codex mcp add superfaktura --url https://superfaktura.usefulapi.io/mcp

codex mcp login superfaktura

Other clients

Windsurf, Cline, Zed and other MCP clients: add this URL as a remote MCP server (Streamable HTTP). The client then opens the login page in your browser.

https://superfaktura.usefulapi.io/mcp

Add only the URL. Do not add an Authorization header or an API key to the client config. The server signs you in with OAuth: the login page asks for your SuperFaktura e-mail (the API user), SuperFaktura API key and Instance. If the config has such a header, remove it: some clients then send that header instead of the login token, and every call fails with 401.

Pricing

Plan	Price	Limit
Free	$0	50 tool calls / month
Proper user	$9/mo · $90/yr	10,000 tool calls / month
Pro+per user	$39/mo · $390/yr	100,000 tool calls / month

Each paid plan covers this SuperFaktura server only. Ask your AI to run superfaktura_upgrade and choose Pro or Pro+, billed monthly or yearly (it returns a Stripe Checkout link). If you already have Pro, ask to change it to Pro+. The change requires your confirmation, keeps your billing interval and charges the price difference for the rest of the period immediately. Cancel any time with superfaktura_cancel_subscription: your paid plan continues to the end of the paid period, with no refund for the current period, and asking to resume the same plan with superfaktura_upgrade before then undoes the cancel. Or write to support@usefulapi.io.

Tools 29

Show all 29 tools (the AI picks them for you)

Read only · 20

Get the company profile and API limitssuperfaktura_get_company
The company the API key is working in (name, IČO, DIČ, IČ DPH, address, VAT-payer flag, bank accounts) and the remaining API quota (SuperFaktura's fair-use policy is 1000 requests per day and 31000 per month; every tool call here uses one request). Good first call. With all_companies=true also the other companies the user can access (their ids are the company_id of the login).
List or search invoicessuperfaktura_list_invoices
List issued documents with client, items, totals and payment status. type selects the document kind (default regular = ordinary invoices; also proforma, estimate = quote, order, cancel = credit note, delivery, draft, reverse_order; several allowed). Without a date filter SuperFaktura returns only the CURRENT YEAR; use created_period='all' or a date range for older ones. status: issued, partially_paid, paid, overdue. search matches client name, number, VS ... Paged: pass next_page as page.
Get an invoicesuperfaktura_get_invoice
One document (invoice, proforma, quote ...) with its header (number, dates, status, amounts, currency, symbols, comments), client, items, VAT summary, payments and related documents. The public access token and payment links of the document are not returned.
List or search clientssuperfaktura_list_clients
List the address book (clients and suppliers) with contact data and totals. search matches name, IČO, DIČ, IČ DPH, bank account, e-mail, address, city, phone, note and tags. Paged: pass next_page as page.
Get a clientsuperfaktura_get_client
One client with address, tax ids, bank data, default currency/due days/discount and statistics.
List a client's contact personssuperfaktura_list_contact_persons
The contact persons (name, e-mail, phone) stored for one client.
List or search expensessuperfaktura_list_expenses
List received documents (expenses: received invoices, bills, internal documents) with amounts, VAT, supplier and payment status. status: issued (new), partially_paid, paid, overdue. Without a date filter SuperFaktura applies its default period; pass created_period='all' for everything. Paged: pass next_page as page.
Get an expensesuperfaktura_get_expense
One expense with its items, VAT rates, payments and supplier. Attachments are not returned.
List expense categoriessuperfaktura_list_expense_categories
The expense category tree (id, name, parent) for the category_id of expenses.
List bank accountssuperfaktura_list_bank_accounts
The company's bank accounts as stored in SuperFaktura (bank name, IBAN, SWIFT, default flag).
List imported bank account movessuperfaktura_list_bank_moves
Bank transactions imported into SuperFaktura (date, amount, currency, variable symbol, counter account, matching state), newest first by default. Filter by date range, credit/debit or amount. Paged: pass next_page as page.
List cash registerssuperfaktura_list_cash_registers
The company's cash registers with currency, number of entries and current balance (read only).
Get a cash registersuperfaktura_get_cash_register
One cash register with currency, number of entries and current balance (read only).
List or search stock itemssuperfaktura_list_stock_items
List warehouse items (name, SKU, unit, price, VAT, quantity in stock). search matches name, SKU and description; sku matches the SKU. Paged: pass next_page as page.
Get a stock itemsuperfaktura_get_stock_item
One warehouse item with SKU, price, VAT, purchase price and quantity in stock.
List stock movements of an itemsuperfaktura_list_stock_movements
The stock log of one item (quantity changes, notes, related invoice or expense). Paged: pass next_page as page.
List tagssuperfaktura_list_tags
The tags (id and name) usable on invoices, expenses and clients.
List numbering sequencessuperfaktura_list_sequences
The document numbering sequences per document type (id, name, mask, next formatted number, default flag); sequence ids are used when creating documents.
List countriessuperfaktura_list_countries
SuperFaktura's country ids with ISO code and EU flag, for the country_id of clients.
Recover the reply of a create by its checksumsuperfaktura_get_response_by_checksum
If a superfaktura_create_invoice call timed out, fetch the reply of the ORIGINAL request by the checksum it was sent with (kept 3 months), so the document is not created twice.

Changes data · 5

Create a clientsuperfaktura_create_client
WRITE: adds a new client to the SuperFaktura address book (only the name is required). Nothing is sent to the client. Not idempotent: calling twice creates two clients, so check superfaktura_list_clients first.
Add a contact person to a clientsuperfaktura_add_contact_person
WRITE: adds a contact person (name and e-mail, optional phone) to an existing client. Nothing is sent to that person. Not idempotent.
Create a tagsuperfaktura_create_tag
WRITE: adds a new tag name (usable on invoices, expenses and clients in the SuperFaktura app). A duplicate name is refused by SuperFaktura.
Record a received expensesuperfaktura_create_expense
WRITE: records a received document (expense) with ONE total amount and VAT rate, e.g. a supplier invoice or a bill. It is created unpaid: no payment is recorded and nothing is sent. No attachments. Not idempotent: calling twice records two expenses.
Create an unsent invoice documentsuperfaktura_create_invoice
WRITE: creates ONE document in SuperFaktura for the user to review: type draft (concept, default), estimate (quote), order or proforma. A final regular invoice cannot be created here. It is NOT sent (no e-mail, no post), NOT marked paid or sent, and has no payment link or discount. Give an existing client_id (its name is read first with one extra GET /clients/view/{id}, so the call uses 2 requests of the daily quota) OR a new client's name (+ optional ico/dic/ic_dph/address...). Items: name, unit price without VAT, VAT rate, quantity. Not idempotent: pass a checksum (max 32 chars) so a timed-out call can be recovered with superfaktura_get_response_by_checksum instead of retried.

Your usefulapi plan · 4

Usage status (free-tier meter)superfaktura_usage_status
Report the caller's current usage: the plan, calls used this month, the limit of the plan (the free monthly cap or the Pro fair use limit), remaining, and whether the limit is reached. Read-only; does not count against the meter.
Request a missing featuresuperfaktura_request_feature
Tell usefulapi that the user needs something the SuperFaktura tools cannot do yet (a missing tool, field or filter). Call it only when the user asks for something none of the tools can do, and tell the user that you send the request. Do not call it for errors or for normal requests. Do not include personal data, credentials or customer records. Stored with the product name and the client type (for example Claude or Cursor), without the user's account. At most 5 requests per day. Does not count against the meter.
Upgrade to Pro or Pro+superfaktura_upgrade
Get a paid plan for SuperFaktura (the free tier caps monthly usage). Pro: 10,000 tool calls a month, for normal use — plan "monthly" ($9/month) or "yearly" ($90/year, 2 months free). Pro+: 100,000 tool calls a month, for automations and heavy use — plan "plus" ($39/month) or "plus_yearly" ($390/year). Without a plan it returns both Pro and Pro+, each with a payment link, for the user to choose; with a plan, one link. An existing Pro subscription changes to Pro+ in place: call without confirm first, as the reply states the exact charge for this account (the price difference for the rest of the period, or in a free Pro trial the full Pro+ price, as the trial ends); then call with confirm: true. Cancel any time: the plan then runs to the end of the paid period, so it also suits a one-time job. A link opens Stripe Checkout in the browser; after payment the account upgrades automatically. Does not count against the meter.
Cancel the Pro subscriptionsuperfaktura_cancel_subscription
Cancel the caller's SuperFaktura Pro subscription at the end of the paid period (no refund for the current period; Pro continues until then, then the free tier applies). Requires confirm: true. Run superfaktura_upgrade later to undo the cancel before the period ends. Does not count against the meter.

FAQ

What can I do with SuperFaktura in Claude or ChatGPT?

Find invoices that are still unpaid. Review the expenses you recorded. Check bank moves and cash register balances. Check stock items and their movements. Add a client with a contact person. Record an expense or prepare a draft invoice. See what you can do for the details.

Is this an official SuperFaktura product?

No. usefulapi is an independent service. It is not affiliated with or endorsed by SuperFaktura. The server calls the SuperFaktura API with your own SuperFaktura access, so it sees only the data that your account can see.

Can I connect SuperFaktura to Claude or ChatGPT?

Yes. In Claude, add this server's URL as a custom connector. In ChatGPT, add it as a custom MCP server in Plugins. Then log in once. Cursor, VS Code, Claude Code and Codex work too. See the setup steps.

What do I need to connect?

The login page asks for your SuperFaktura e-mail (the API user), SuperFaktura API key and Instance. See Before you connect for where to find them.

Do I put my SuperFaktura key or an Authorization header in the client config?

No. Add only the URL. Do not add an Authorization header or an API key to the client config. The server signs you in with OAuth: the login page asks for your SuperFaktura e-mail (the API user), SuperFaktura API key and Instance. If the config has such a header, remove it: some clients then send that header instead of the login token, and every call fails with 401.

How do you keep my SuperFaktura credentials?

The login stores them encrypted in the authorization grant of your connection. The server uses them to call the SuperFaktura API for you and to derive a private account id for usage metering. usefulapi does not show them on any page or in any reply. To stop all access, remove the connector and change or delete these credentials in SuperFaktura.

Can the AI change my SuperFaktura data?

Yes, if you approve it. 5 of the 25 SuperFaktura tools can create or change data. The other 20 are marked read-only. Most MCP clients ask you to approve a tool call before it runs.

What does it cost?

The Free plan gives 50 tool calls / month. Pro costs $9/mo or $90/yr, with 10,000 tool calls / month. Pro+ costs $39/mo or $390/yr, with 100,000 tool calls / month. Each subscription covers this SuperFaktura server only. Cancel any time: your paid plan then runs to the end of the paid period. Run superfaktura_usage_status to see how many calls you used.

How do I subscribe or cancel?

Ask the AI to run superfaktura_upgrade and choose Pro or Pro+, billed monthly or yearly: it returns a Stripe Checkout link. If you already have Pro, ask to change it to Pro+. After you confirm, your existing subscription changes in place, keeps its billing interval and charges the price difference for the rest of the period immediately. To cancel, run superfaktura_cancel_subscription. Your paid plan continues to the end of the paid period.

What if a SuperFaktura tool that I need is missing?

Tell the AI what you wanted to do. It can send the request with superfaktura_request_feature. We store the text with the server name, the type of AI client and the tool you tried, not with your account, and read every request when we plan new tools. You can send up to 5 requests per day.

Which AI clients can I use?

Any client that supports remote MCP servers (Streamable HTTP) with OAuth login: Claude (web and desktop), Claude Code, ChatGPT, Codex, Cursor, VS Code, Windsurf and others.

This is a Model Context Protocol endpoint — meant to be connected from an AI client, not opened in a browser. An invalid_token response at the URL is the auth gate working as designed; clients authenticate automatically.

Need a tool this server does not have, or a connection to another system? We build custom integrations and MCP servers.

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