ERP and accounting
Connect e-Boekhouden.nl to Hypamoon
Yes. e-Boekhouden.nl has a public, versioned API and you create the key yourself, so your chat can write the adapter.
OpenThe check
Three questions about the API of e-Boekhouden.nl, answered from its own docs.
- Public API docs
- Yes. Public OpenAPI reference. Read the docs
- A key you create yourself
- Yes. Create an API token yourself in the settings of your account. api.e-boekhouden.nl
- Versions or a changelog
- Yes. Versioned paths (/v1/). api.e-boekhouden.nl
- How it signs in
- An API token you create in your account; you exchange it for a short lived session token at /v1/session.
- Webhooks
- No. api.e-boekhouden.nl
- Hosting
- Cloud
In practice
What it takes in a real e-Boekhouden.nl administration.
- Getting access
- The account holder creates an API token in the settings of e-Boekhouden.nl and gives it to the integration, which swaps it for a short lived session token.
- Limits
- No rate limit is published for the REST API. Lists return at most 2,000 records per page. api.e-boekhouden.nl
- Writing
- Read and write. Create relations, invoices, mutations (bookings), products, ledger accounts and cost centres; relations, products and ledger accounts can be updated, invoices and mutations cannot.
- Cost
- Not published.
What you can build
Create the relation and the invoice in e-Boekhouden.nl as soon as an order or booking comes in on your site, and ask your chat which invoices are still open.
Your chat writes it as a Hypamoon adapter from the docs above. Reading starts after you click Allow in the portal, and every write waits for your approval, one call at a time. How adapters work
Good to know
- Your adapter uses a fixed key: you paste it once in the Hypamoon portal, never in the chat, and it only goes to the API host you allow.
- There is also an older SOAP API.
Try it in your chat
Fill in what to read and write, and send it.
Build the Hypamoon recipe build-an-adapter for e-Boekhouden.nl. API docs: https://api.e-boekhouden.nl/scalar/. Read: [what]. Write: [what, or nothing].
In Claude, or another chat with the full Hypamoon connection; adapters are not in ChatGPT yet. You paste the key in the portal, never in the chat. The full recipe
Sources
Checked on 1 November 2026.
e-Boekhouden.nl is a name of its owner, used here only to describe the software. This page is not an official integration and Hypamoon has no partnership with e-Boekhouden.nl. Found something that changed? Tell us at support.
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Tool not listed? Ask the chat to check its API.
The same three checks work for any software. Your chat reads the vendor's own docs and tells you what it found.
Check if [software] has an open API that a Hypamoon adapter can use: public API docs, a key or token I can create myself without asking the vendor, and versions or a changelog. Link the pages you used.
Fill in the name of your software. Checking needs no connection to Hypamoon.
Ready to connect e-Boekhouden.nl?
Connect your chat once, then ask it to build the adapter.
Works in Claude and ChatGPT. Add to Claude Add to ChatGPT