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ERP and accounting

Connect Rompslomp to Hypamoon

Yes. Rompslomp has a public, versioned API and you create the key yourself, so your chat can write the adapter.

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The check

Three questions about the API of Rompslomp, answered from its own docs.

Public API docs
Yes. Public developer documentation in Dutch. Read the docs
A key you create yourself
Yes. Create a personal API token under My account, My API tokens, and pick the sections it may use. app.rompslomp.nl
Versions or a changelog
Yes. Versioned base path, /api/v1. app.rompslomp.nl
How it signs in
A personal API token sent as a Bearer token; it stays valid until you delete it. OAuth 2.0 is for apps that other Rompslomp users authorise.
Webhooks
Not confirmed.
Hosting
Cloud
Condition
Needs at least a Puur Factuur account, and the owner of the administration has to switch on the API function.

Your own invoicing flow on Rompslomp, from your site straight to your books.

  • Contacts, sales invoices, quotes and products, straight from Rompslomp.
  • AI that turns a web request into a draft invoice for you to approve.
  • An order form on your own site and an email when something needs a look.

Ask your chat

Answers straight from your Rompslomp data, in Claude or another chat with the full Hypamoon connection.

  • Which sales invoices are still unpaid, and since when?
  • How much did we invoice this quarter compared to last quarter?

On a schedule

Rompslomp has no webhooks we could confirm, so an agent checks every 15 minutes and decides what happens next.

  1. Every 15 minutes

    New requests from the order form on your own site.

    AI decides

    AI matches the request to an existing contact and picks the right products and VAT rate.

    Then

    A draft sales invoice is created in Rompslomp for you to check.

    AI proposes, you approve

A screen for your team or customers

An app on your own address, with sign-in, on top of the same Rompslomp data.

  • For your customers

    Customers sign in and see their own invoices and quotes from Rompslomp.

Rompslomp stays the core: your chat builds the rest on its API, as an adapter plus an app and agents in your Hypamoon project. Reading starts after you click Allow in the portal. Every change an agent or a chat makes in Rompslomp 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.
  • A token can only reach what your own user can reach in the administration. The API answers 429 with a Retry-After header when you go over the rate limit. Undocumented functions may change without notice.

Try it in your chat

Fill in what to read and write, and send it.

Say this in your chat

Build the Hypamoon recipe build-an-adapter for Rompslomp. API docs: https://app.rompslomp.nl/developer. Read: [what]. Write: [what, or nothing].

Open in Claude

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 7 November 2026.

Rompslomp 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 Rompslomp. Found something that changed? Tell us at support.

More in erp and accounting

All 1094 tools

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.

Say this in your chat

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.

Open in Claude Open in ChatGPT

Fill in the name of your software. Checking needs no connection to Hypamoon.

Ready to connect Rompslomp?

Connect your chat once, then ask it to build the adapter.

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