Papierkram MCP
Read and create invoices, expenses, time entries and contacts in Papierkram accounting software.
Connects to Papierkram, a German accounting platform. Muse can read invoices, estimates, expense vouchers, projects, time entries, bank transactions and contacts. It can create invoices, contacts, projects, tasks, time entries and products. Requires a Papierkram account and API credits.
Try asking Muse: "Create a draft invoice for my customer with the hours I logged this week."
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Source: Found in the official MCP Registry (io.usefulapi/papierkram) · First listed October 30, 2026
Last 24 hours
Each bar is one check, every 15 minutes. Green means it answered. Last checked 2 h ago.
Is it safe to connect?
What Muse can see: It does not ask you to sign in, so it cannot see your accounts. It only sees what Muse sends it from your request.
Before it acts: Read what Muse plans to do before you approve it, and remove the app from Muse when you stop using it.
musedirectory.ai is not part of Meta. More about how Muse handles your information
How to add it to Muse
Not in Muse's Connectors list yet, but Muse can still use it. Copy the request below and paste it into Muse. Muse asks before it shares anything with the app's site. Meta does not review apps used this way, so only use ones you trust. We tested this in the Muse app on September 24, 2026: Muse used an app's link directly this way and returned a live answer.
https://papierkram.usefulapi.io/mcpNot in Muse's Connectors list yet. Muse can still use it: its page gives you a request to paste into Muse.
Also use it in ChatGPT or Claude
Papierkram MCP is a remote MCP server, so any assistant that can add a custom connector by link can use it. Same link, same tools.
Add it to ChatGPT
- 1
Open ChatGPT settings
In ChatGPT, open Settings, then Connectors (called Apps & Connectors on some accounts).
- 2
Turn on developer mode
Under Advanced settings, switch on Developer mode. That is what lets you add a connector by link.
- 3
Create the connector
Choose Create, give it a name, paste the link as the MCP server URL, and save. If it needs a sign-in, ChatGPT asks for it here.
- 4
Use it in a chat
Start a chat, open the tools menu, pick the connector, and ask. ChatGPT asks before it runs a tool the first time.
Custom connectors need a paid ChatGPT plan, and on Team, Enterprise and Edu accounts only an admin can add them. Our "Working" label means the server answered us; it cannot tell whether your plan lets you add it. All connectors that work in ChatGPT
Add it to Claude
- 1
Open Claude settings
In Claude, open Settings, then Connectors.
- 2
Add a custom connector
Choose Add custom connector, give it a name, and paste the link.
- 3
Connect and use it
If it needs a sign-in, Claude sends you to it. Then turn the connector on in a chat from the tools menu and ask.
Custom connectors are available on paid Claude plans; on Team and Enterprise accounts an admin may need to add them. Our "Working" label means the server answered us; it cannot tell whether your plan lets you add it. All connectors that work in Claude
https://papierkram.usefulapi.io/mcpWhat people ask Muse to do
Technical details: safety screening, tools, response time and recent checks
Response time at the last check: 1729ms. Worked in n/a of checks over 30 days.
Screening · October 30, 2026
Screened, no issues found
Screening looks for known threats and hidden instructions at the time of the check, and runs again weekly and whenever the tool list changes. It cannot see the server's code, so only connect what you need and review what Muse asks to do. How screening works.
Tools · 33
papierkram_get_infoRead the API version and the account's custom invoice templates (ids usable as custom_template_id when creating an invoice).papierkram_list_companiesList contacts (companies: customers and suppliers) with address, VAT id and contact data. Paged.papierkram_get_companyGet one contact (company) by id, with its people.papierkram_list_personsList the contact persons of one company. Paged.papierkram_get_personGet one contact person of a company.papierkram_list_invoicesList outgoing invoices (Ausgangsrechnungen) with state (draft, ...), dates, totals and outstanding_amount. Filter by company, project or document date range. Paged.papierkram_get_invoiceGet one outgoing invoice with its line items, billing address and payment term.papierkram_list_estimatesList estimates (Angebote) with state, dates and totals. Filter by company, project or document date range. Paged.papierkram_get_estimateGet one estimate with its line items.papierkram_list_vouchersList expense vouchers (Belege / incoming invoices and receipts) with creditor, state, dates and amounts. Filter by creditor (supplier company), project or document date range. Paged.papierkram_get_voucherGet one expense voucher with its line items.papierkram_list_payment_termsList the payment term templates (ids needed as payment_term_id when creating an invoice).papierkram_list_propositionsList the stored products and services (Leistungen/Artikel) with article number, price and unit (the VAT rate is only in papierkram_get_proposition). Paged.papierkram_get_propositionGet one stored product or service, including its vat_rate (name such as 19% and rate such as 0.19).papierkram_list_projectsList projects with dates, budget and state. Filter by company. Paged.papierkram_get_projectGet one project by id.papierkram_list_tasksList time-tracking tasks. Filter by project or product/service. Paged.papierkram_get_taskGet one task by id.papierkram_list_time_entriesList tracked time entries. Filter by project, task, invoice, user, billing state or start time range (RFC 3339 date-time). Paged.papierkram_get_time_entryGet one time entry by id.papierkram_list_bank_connectionsList the bank accounts connected to Papierkram (name, IBAN, balance data as Papierkram reports it). Paged.papierkram_list_bank_transactionsList bank transactions (value, currency, usage text, booking date, counterparty). Filter by bank connection. Paged.papierkram_get_bank_transactionGet one bank transaction by id.papierkram_list_usersList the users of the account (ids needed as user_id for time entries and tasks).papierkram_get_userGet one user by id.papierkram_create_companyWRITE: create a contact (company) in Papierkram. Papierkram assigns the customer number. Nothing is sent to the contact. Check papierkram_list_companies first to avoid duplicates. Costs Papierkram API credits (a create 10, an invoice 50; the monthly quota is limited).papierkram_update_companyWRITE: change fields of an existing contact (only the fields you pass are changed). Read it first with papierkram_get_company.papierkram_create_personWRITE: add a contact person to an existing company. Nothing is sent to the person. Costs Papierkram API credits (a create 10, an invoice 50; the monthly quota is limited).papierkram_create_projectWRITE: create a project for a customer. Costs Papierkram API credits (a create 10, an invoice 50; the monthly quota is limited).papierkram_create_taskWRITE: create a time-tracking task in a project. Costs Papierkram API credits (a create 10, an invoice 50; the monthly quota is limited).papierkram_create_time_entryWRITE: record a time entry (worked time) on a task. Not billed until an invoice is made. Costs Papierkram API credits (a create 10, an invoice 50; the monthly quota is limited).papierkram_create_propositionWRITE: create a stored product or service (Leistung/Artikel) with a price. Costs Papierkram API credits (a create 10, an invoice 50; the monthly quota is limited).papierkram_create_invoiceWRITE: create a DRAFT outgoing invoice (state draft; it is NOT finalized or sent, and gets no invoice number until the user completes it in Papierkram). Needs a payment term id (papierkram_list_payment_terms) and at least one line item. Use papierkram_list_invoices afterwards to Link
https://papierkram.usefulapi.io/mcpQuestions about Papierkram MCP in Muse
How do I connect Papierkram MCP to Muse?
Not in Muse's Connectors list yet, but Muse can still use it. Paste this into Muse: "Use Papierkram MCP to help me. It is a free service with an MCP server at https://papierkram.usefulapi.io/mcp. It does not need an API key. Ask me before you share anything with it." Muse asks before it shares anything with the app's site. Meta does not review apps used this way, so only use ones you trust. We tested this in the Muse app on September 24, 2026: Muse used an app's link directly this way and returned a live answer.
Is Papierkram MCP working right now?
At the last check (October 30, 2026, 00:16 UTC) the endpoint was working, answering in 1729ms. It is checked every 15 minutes.
Is Papierkram MCP safe to connect to Muse?
It was screened on October 30, 2026 with the result "screened, no issues found". Screening checks the domain against threat feeds and reads the tools for hidden instructions and requests for passwords or card numbers. It cannot see the server's code, so grant only the access you need.
What can Papierkram MCP do in Muse?
It exposes 33 tools, including papierkram_get_info, papierkram_list_companies, papierkram_get_company, papierkram_list_persons. For example, you could ask Muse: "Create a draft invoice for my customer with the hours I logged this week."
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