ERP and accounting
Connect Horus to Hypamoon
Possible, with help from Horus. The API is documented, but you cannot just create a key: access goes through Horus first.
PossibleThe check
Three questions about the API of Horus, answered from its own docs.
- Public API docs
- Yes. Public docs with guides and a full API reference for Horus Office. Read the docs
- A key you create yourself
- No. You register an integration by e-mailing developer@horus-software.be with a New Api Integration Request. docs.horus-software.be
- Versions or a changelog
- Yes. Backwards compatibility policy; breaking changes are announced in a changelog and by e-mail in advance. docs.horus-software.be
- How it signs in
- OAuth 2.0 with a client that Horus registers for you; access tokens last an hour and single use refresh tokens stay valid until revoked.
- Webhooks
- Not confirmed.
- Hosting
- Cloud
- Condition
- Horus registers each integration after an e-mail request.
In practice
What it takes in a real Horus administration.
- Getting access
- E-mail developer@horus-software.be for an integration (OAuth client), then the customer connects their license once.
- Limits
- None published.
- Writing
- Read and write. Create and update companies, accounts, daybooks, book entries, sales and purchase invoices, upload documents and match open items.
- Cost
- Not published.
What you can build
Post sales and purchase invoices with documents into your Horus folder and ask your chat for outstanding customer and supplier balances.
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
- Horus signs in with OAuth or signed requests only, with tokens that expire. The Hypamoon vault holds a fixed key today, so an adapter for Horus takes more work: ask your chat to check this first.
Try it in your chat
First get access from Horus. Then fill in what to read and write, and send it.
Build the Hypamoon recipe build-an-adapter for Horus. API docs: https://docs.horus-software.be. 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 7 November 2026.
- docs.horus-software.be
- docs.horus-software.be/docs/register-your-integration.md
- docs.horus-software.be/docs/changes-and-versioning.md
Horus 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 Horus. 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 Horus?
Connect your chat once, then ask it to build the adapter.
Works in Claude, ChatGPT and Copilot. Add to Claude Add to ChatGPT 
Add to Copilot