Read Papierkram invoices, vouchers, contacts, projects, time; create contacts, time, draft invoices. Hosted by usefulapi: connect it to Claude, ChatGPT, Cursor or any MCP client.
Turn on the Papierkram connector, then ask in plain words. The AI picks the tools.
For German freelancers and small businesses who do invoicing and bookkeeping with Papierkram.
The AI lists outgoing invoices with state, dates, totals and outstanding amount, filtered by company, project or date range, and adds up what is open.
The AI lists expense vouchers filtered by creditor, project or document date range, with state and amounts, and opens one with its line items.
The AI lists time entries by project, task, user or billing state and adds up the hours that are not billed yet.
The AI lists the connected bank accounts and their transactions with value, booking date, usage text and counterparty.
The AI creates a draft invoice for a customer with a payment term, or adds a company contact. A draft is not final or sent until you complete it in Papierkram.
Changes dataThe AI creates a project and a task if needed, then records a time entry of worked time on the task. It is not billed until an invoice is made.
Changes dataThe login page asks for your Papierkram account and Papierkram API token.
The account is the first part of your Papierkram address (https://yourcompany.papierkram.de). Create the token in Papierkram under Einstellungen → API (the API is a beta feature of the plans M and L). Every API call uses up credits of your monthly quota. Your token is used only to call the Papierkram API on your behalf; it is never shown to anyone.
Team and Enterprise: an Owner adds the connector for the organization first.
No Add custom MCP server option? It depends on your account or workspace settings: see OpenAI's guide.
Run this command, then run /mcp in Claude Code to log in:
Add to Cursor or add this to ~/.cursor/mcp.json:
{
"mcpServers": {
"papierkram": {
"url": "https://papierkram.usefulapi.io/mcp"
}
}
} Add to VS Code or add this to .vscode/mcp.json:
{
"servers": {
"papierkram": {
"type": "http",
"url": "https://papierkram.usefulapi.io/mcp"
}
}
} Run these commands. The second one opens the login page:
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.
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 Papierkram account and Papierkram 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.
| Plan | Price | Limit |
|---|---|---|
| Free | $0 | 50 tool calls / month |
| Proper account | $9/mo · $90/yr | 10,000 tool calls / month |
| Pro+per account | $39/mo · $390/yr | 100,000 tool calls / month |
Each paid plan covers this Papierkram server only. Ask your AI to run papierkram_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 papierkram_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 papierkram_upgrade before then undoes the cancel. Or write to [email protected].
papierkram_get_infopapierkram_list_companiespapierkram_get_companypapierkram_list_personspapierkram_get_personpapierkram_list_invoicespapierkram_get_invoicepapierkram_list_estimatespapierkram_get_estimatepapierkram_list_voucherspapierkram_get_voucherpapierkram_list_payment_termspapierkram_list_propositionspapierkram_get_propositionpapierkram_list_projectspapierkram_get_projectpapierkram_list_taskspapierkram_get_taskpapierkram_list_time_entriespapierkram_get_time_entrypapierkram_list_bank_connectionspapierkram_list_bank_transactionspapierkram_get_bank_transactionpapierkram_list_userspapierkram_get_userpapierkram_get_voucher_pdfpapierkram_get_voucher_documentpapierkram_create_companypapierkram_update_companypapierkram_create_personpapierkram_create_projectpapierkram_create_taskpapierkram_create_time_entrypapierkram_create_propositionpapierkram_create_invoicepapierkram_create_estimatepapierkram_upload_voucher_documentpapierkram_create_voucherpapierkram_pay_voucherpapierkram_update_voucherpapierkram_usage_statuspapierkram_request_featurepapierkram_upgradepapierkram_cancel_subscriptionSee which invoices are still unpaid. Review expense vouchers of a supplier. Check tracked hours on a project. Check bank connections and transactions. Prepare a draft invoice or add a contact. Create a project and task, then record time. See what you can do for the details.
No. usefulapi is an independent service. It is not affiliated with or endorsed by Papierkram. The server calls the Papierkram API with your own Papierkram 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 Papierkram account and Papierkram API token. See Before you connect for where to find them.
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 Papierkram account and Papierkram 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 Papierkram 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 Papierkram.
Yes, if you approve it. 13 of the 40 Papierkram tools can create or change data. The other 27 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 10,000 tool calls / month. Pro+ costs $39/mo or $390/yr, with 100,000 tool calls / month. Each subscription covers this Papierkram server only. Cancel any time: your paid plan then runs to the end of the paid period. Run papierkram_usage_status to see how many calls you used.
Ask the AI to run papierkram_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 papierkram_cancel_subscription. Your paid plan continues to the end of the paid period.
Tell the AI what you wanted to do. It can send the request with papierkram_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.
Need a tool this server does not have, or a connection to another system? We build custom integrations and MCP servers.