e-Boekhouden MCP
Read and create invoices, manage customers and suppliers, and track bookkeeping in e-Boekhouden.
Connects to e-Boekhouden accounting software. Read relations, invoices, ledgers, bookings and products. Create new relations, products and sales invoices. Query outstanding invoices, ledger balances and cost centers. Requires e-Boekhouden account.
Try asking Muse: "Create an invoice for a customer and show me all unpaid invoices from this month."
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Source: Found in the official MCP Registry (io.usefulapi/e-boekhouden) · First listed October 29, 2026
Last 24 hours
Each bar is one check, every 15 minutes. Green means it answered. Last checked 57 min 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://e-boekhouden.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
e-Boekhouden 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://e-boekhouden.usefulapi.io/mcpWhat people ask Muse to do
Technical details: safety screening, tools, response time and recent checks
Response time at the last check: 51ms. Worked in 100% of checks over 30 days.
Screening · October 29, 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 · 25
eboekhouden_list_relationsList relations (customers and suppliers of the administration), optionally filtered (filters combine with AND). Text filters match exactly unless match is contains or starts_with. Paged: pass next_offset as offset. GET /v1/relation.eboekhouden_get_relationOne relation with all its fields (addresses, e-mail addresses, VAT and KvK number, IBAN, payment term, ledger). GET /v1/relation/{id}.eboekhouden_list_invoicesSearch the invoices created in the invoicing module, by invoice number, relation or date (exact, or from/to). Paged: pass next_offset as offset. GET /v1/invoice.eboekhouden_get_invoiceOne invoice with its items, amounts and relation. GET /v1/invoice/{id}.eboekhouden_list_outstanding_invoicesOpen (unpaid) invoices: debtors (D, sales invoices customers still owe) or creditors (C, purchase invoices still to be paid). Paged: pass next_offset as offset. GET /v1/mutation/invoice/outstanding.eboekhouden_list_mutationsSearch the bookkeeping mutations: type 1 invoice received, 2 invoice sent, 3 invoice payment received, 4 invoice payment sent, 5 money received, 6 money sent, 7 general journal entry. Filter by type, mutation number, description, invoice number or date. Paged: pass next_offset aseboekhouden_get_mutationOne mutation with its rows (ledger, VAT code, amount, relation, invoice number). GET /v1/mutation/{id}.eboekhouden_list_ledgersThe ledger accounts (grootboekrekeningen): id, code, description and category (BAL balance, VW profit and loss, FIN, DEB, CRED, AF6, AF19, AFOVERIG, VOOR, BTWRC, AF). Use the id as ledger_id in other tools. Paged: pass next_offset as offset. GET /v1/ledger.eboekhouden_get_ledgerOne ledger account. GET /v1/ledger/{id}.eboekhouden_get_ledger_balanceThe balance of one ledger, optionally per cost center and for a period (from/to). GET /v1/ledger/{id}/balance.eboekhouden_list_ledger_balancesThe balances of all ledgers (a trial balance), optionally per cost center and for a period (from/to). GET /v1/ledger/balances.eboekhouden_list_productsList products and services (articles) with price, VAT code, ledger and unit, optionally by code or group code. Paged: pass next_offset as offset. GET /v1/product.eboekhouden_get_productOne product with price, VAT code, ledger, unit and stock setting. GET /v1/product/{id}.eboekhouden_list_product_groupsAll product groups. GET /v1/product/groups.eboekhouden_list_cost_centersList cost centers (kostenplaatsen), optionally by parent id or description. Paged: pass next_offset as offset. GET /v1/costcenter.eboekhouden_get_cost_centerOne cost center. GET /v1/costcenter/{id}.eboekhouden_list_unitsList product units (piece, hour, ...) with their ids. Paged: pass next_offset as offset. GET /v1/unit.eboekhouden_list_invoice_templatesList invoice templates (the template_id for eboekhouden_create_invoice), optionally by name, type (E editor, A advanced) or active. Paged: pass next_offset as offset. GET /v1/invoicetemplate.eboekhouden_list_email_templatesList e-mail templates. Paged: pass next_offset as offset. GET /v1/emailtemplate.eboekhouden_list_membersList members; only available to clubs and associations (others get error MEM_056). Paged: pass next_offset as offset. GET /v1/member.eboekhouden_get_memberOne member; only available to clubs and associations. GET /v1/member/{id}.eboekhouden_create_relationCreate a new relation (customer or supplier) in the administration. Only name is required; the code is generated when omitted. Returns the new id and code. POST /v1/relation.eboekhouden_update_relationChange fields of an existing relation. The tool first reads the relation, then sends its current values with your changes on top (the API requires name on every update), so fields you do not pass keep their values. This overwrites the current values of the fields you pass. GET + eboekhouden_create_productCreate a product or service. Needs code, description, a sale VAT code and a ledger id, and exactly one of price_excl or price_incl. Returns the new id. POST /v1/product.eboekhouden_create_invoiceCreate a sales invoice for a relation. PERMANENT: the API cannot change or delete invoices afterwards, and an invoice number is used up. The invoice is created only: it is NOT e-mailed to the customer, NOT booked as a mutation and no direct debit is set. Needs relation_id, templaRecent checks
Link
https://e-boekhouden.usefulapi.io/mcpQuestions about e-Boekhouden MCP in Muse
How do I connect e-Boekhouden MCP to Muse?
Not in Muse's Connectors list yet, but Muse can still use it. Paste this into Muse: "Use e-Boekhouden MCP to help me. It is a free service with an MCP server at https://e-boekhouden.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 e-Boekhouden MCP working right now?
At the last check (October 29, 2026, 11:00 UTC) the endpoint was working, answering in 51ms. Over the last 7 days it answered 100% of health checks. It is checked every 15 minutes.
Is e-Boekhouden MCP safe to connect to Muse?
It was screened on October 29, 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 e-Boekhouden MCP do in Muse?
It exposes 25 tools, including eboekhouden_list_relations, eboekhouden_get_relation, eboekhouden_list_invoices, eboekhouden_get_invoice. For example, you could ask Muse: "Create an invoice for a customer and show me all unpaid invoices from this month."
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