Look up contacts, invoices, vouchers, orders, bank transactions and parts, and create drafts. Hosted by usefulapi — connect from Claude, ChatGPT, Cursor, or any MCP client.
Team and Enterprise: an Owner adds the connector for the organization first.
Run this command, then run /mcp in Claude Code to log in:
Add to Cursor or add this to ~/.cursor/mcp.json:
{
"mcpServers": {
"sevdesk": {
"url": "https://sevdesk.usefulapi.io/mcp"
}
}
}Add to VS Code or add this to .vscode/mcp.json:
{
"servers": {
"sevdesk": {
"type": "http",
"url": "https://sevdesk.usefulapi.io/mcp"
}
}
}No Add custom MCP server option? It depends on your account or workspace settings: see OpenAI's guide.
Run these commands. The second one opens the login page:
Other MCP clients (Windsurf, Cline, Zed and more): add the URL as a remote MCP server (Streamable HTTP). The client then opens the login page in your browser. Do not add an Authorization header: see Before you connect.
The login page asks for your sevDesk API token.
Find it in sevDesk → Settings → Users → your user → API token (32 hex characters). API access requires a paid sevDesk plan. Your token is used only to call the API on your behalf and to derive a private account id; it is never shown to anyone.
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 sevDesk API token. 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.
Turn on the sevdesk connector, then ask in plain words. The AI picks the tools.
| Tool | Type | What it does |
|---|---|---|
sevdesk_get_bookkeeping_system_version | read | Get the bookkeeping system version Return whether the account runs sevdesk bookkeeping 1.0 or 2.0 (2.0 uses taxRule instead of taxType on invoices). Also a cheap way to confirm the API token works. sevdesk: GET /Tools/bookkeepingSystemVersion. |
sevdesk_list_contacts | read | List contacts List contacts (customers, suppliers, partners, prospects). By default sevdesk returns only organisations; set include_persons to also get individual persons. sevdesk: GET /Contact. |
sevdesk_get_contact | read | Get one contact Fetch a single contact by id. sevdesk: GET /Contact/{contactId}. |
sevdesk_list_communication_ways | read | List contact emails, phones and websites List communication ways (email addresses, phone and mobile numbers, websites), optionally for one contact. sevdesk: GET /CommunicationWay. |
sevdesk_list_communication_way_keys | read | List communication way keys List the labels a communication way can carry (1 Privat, 2 Arbeit, 3 Fax, 4 Mobil, 6 Autobox, 7 Newsletter, 8 Rechnungsadresse). Needed for sevdesk_add_communication_way. sevdesk: GET /CommunicationWayKey. |
sevdesk_list_invoices | read | List invoices List invoices, filterable by status, number, date range and contact. Status: 50 deactivated recurring, 100 draft, 200 open/due, 750 partially paid, 1000 paid. sevdesk: GET /Invoice. |
sevdesk_get_invoice | read | Get one invoice Fetch a single invoice by id — totals, status, dates, contact and contact person. sevdesk: GET /Invoice/{invoiceId}. |
sevdesk_get_invoice_positions | read | Get an invoice's line items List the positions (line items) of one invoice: name, quantity, price, tax rate, sums. sevdesk: GET /Invoice/{invoiceId}/getPositions. |
sevdesk_list_vouchers | read | List vouchers (receipts) List vouchers — receipts and incoming/outgoing bills. Status: 50 draft, 100 unpaid/due, 1000 paid. credit_debit C = credit (revenue), D = debit (expense). sevdesk: GET /Voucher. |
sevdesk_get_voucher | read | Get one voucher Fetch a single voucher (receipt) by id. sevdesk: GET /Voucher/{voucherId}. |
sevdesk_list_credit_notes | read | List credit notes List credit notes (Gutschriften), filterable by status, number, date range and contact. Status: 100 draft, 200 open/delivered, 750 partially paid, 1000 paid. sevdesk: GET /CreditNote. |
sevdesk_list_orders | read | List orders and quotes List orders — quotes (Angebote), order confirmations and delivery notes — filterable by status, number, date range and contact. Status: 100 draft, 200 delivered, 300 rejected, 500 accepted, 750 partially calculated, 1000 calculated. sevdesk: GET /Order. |
sevdesk_list_parts | read | List parts (products) List parts — the products and services in the sevdesk inventory, with prices, tax rate and stock. sevdesk: GET /Part. |
sevdesk_list_check_accounts | read | List payment accounts List check accounts — the bank accounts, cash registers and clearing accounts sevdesk tracks payments on, with IBAN, type and sync status. sevdesk: GET /CheckAccount. |
sevdesk_get_check_account_balance | read | Get a payment account's balance at a date Balance of one check account as the sum of every transaction sevdesk knows up to and including the given date. May differ from the real bank balance if older transactions were never imported. sevdesk: GET /CheckAccount/{checkAccountId}/getBalanceAtDate. |
sevdesk_list_transactions | read | List bank transactions List check-account transactions (bank payments in and out), filterable by account, booking state, date range, payee/payer and purpose. sevdesk: GET /CheckAccountTransaction. |
sevdesk_create_contact | write | Create a contact Create a contact. Give `name` for an organisation, or `surename`/`familyname` for a person. Addresses and emails are separate (use sevdesk_add_communication_way). sevdesk: POST /Contact. |
sevdesk_update_contact | write | Update a contact Update fields on an existing contact; only the fields you pass are sent. sevdesk: PUT /Contact/{contactId}. |
sevdesk_add_communication_way | write | Add an email, phone or website to a contact Attach an email address, phone/mobile number or website to a contact. key_id labels it (2 Arbeit/work is a good default; see sevdesk_list_communication_way_keys). sevdesk: POST /CommunicationWay. |
sevdesk_create_draft_invoice | write | Create a draft invoice Create a normal invoice (type RE) with its line items, ALWAYS saved as a DRAFT (status 100): it is not sent, not booked and stays editable in sevdesk. contact_person_id is the sevdesk USER responsible for it — copy contactPerson.id from any existing invoice (sevdesk_get_invoice). Bookkeeping 2.0 accounts use tax_rule_id (1 = taxable sales in Germany, the usual choice); 1.0 accounts pass tax_type instead (check sevdesk_get_bookkeeping_system_version). sevdesk: POST /Invoice/Factory/saveInvoice. |
sevdesk_usage_status | Usage status (free-tier meter) 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. | |
sevdesk_request_feature | Request a missing feature Tell usefulapi that the user needs something the sevdesk 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. | |
sevdesk_upgrade | Upgrade to Pro (unlimited*) Get Pro: unlimited tool calls (fair use limit: 10,000 a month) on sevdesk (the free tier caps monthly usage). Plans: "monthly" — $9/month; "yearly" — $90/year (2 months free). Cancel any time: Pro then runs to the end of the paid period, so it also suits a one-time job. *A fair use limit applies. For heavy use (near Pro's limit): "plus" or "plus_yearly" — Pro+, $19/month or $190/year, unlimited tool calls (fair use limit: 100,000 a month); an existing Pro subscription changes to Pro+ in place (needs confirm: true; the price difference for the rest of the period is charged at once). Otherwise returns a short link to open in your browser (it opens Stripe Checkout); after payment the account upgrades automatically. Does not count against the meter. | |
sevdesk_cancel_subscription | Cancel the Pro subscription Cancel the caller's sevdesk 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 sevdesk_upgrade later to undo the cancel before the period ends. Does not count against the meter. |
| Plan | Price | Limit |
|---|---|---|
| Free | $0 | 50 tool calls / month |
| Proper user | $9/mo · $90/yr | Unlimited* |
*Pro fair use limit: 10,000 tool calls a month on this server. For more, write to [email protected].
Pro covers this sevdesk server only. Subscribe with sevdesk_upgrade (it returns a Stripe Checkout link). Cancel any time with sevdesk_cancel_subscription: Pro continues to the end of the paid period, with no refund for the current period, and running sevdesk_upgrade before then undoes the cancel. Or write to [email protected].
No. usefulapi is an independent service. It is not affiliated with or endorsed by sevdesk. The server calls the sevdesk API with your own sevdesk access, so it sees only the data that your account can see.
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.
The login page asks for your sevDesk API token. See Before you connect for where to find it.
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 sevDesk API token. 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.
The login stores them encrypted in the authorization grant of your connection. The server uses them to call the sevdesk 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 sevdesk.
Yes, if you approve it. 4 of the 20 sevdesk tools can create or change data. The other 16 are marked read-only. Most MCP clients ask you to approve a tool call before it runs.
The Free plan gives 50 tool calls / month. Pro costs $9/mo or $90/yr, with unlimited tool calls (fair use limit: 10,000 tool calls a month), for this sevdesk server only. Cancel any time: Pro then runs to the end of the paid period. Run sevdesk_usage_status to see how many calls you used.
Ask the AI to run sevdesk_upgrade: it returns a Stripe Checkout link. To cancel, run sevdesk_cancel_subscription. Pro continues to the end of the paid period.
Tell the AI what you wanted to do. It can send the request with sevdesk_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.
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.