Payments and billing
Connect Vyfakturuj to Hypamoon
Yes. Vyfakturuj 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 Vyfakturuj, answered from its own docs.
- Public API docs
- Yes. Public API documentation (v2) at api.vyfakturuj.cz. Read the docs
- A key you create yourself
- Yes. You get the API key yourself in the API administration of Vyfakturuj.cz and use it with your user's email address. api.vyfakturuj.cz
- Versions or a changelog
- Yes. Versioned API (v2) and API changes listed in the changelog. vyfakturuj.cz
- How it signs in
- HTTP Basic with the user's email address as user name and the API key as password.
- Webhooks
- Yes. It can tell your app when something changes. api.vyfakturuj.cz
- Hosting
- Cloud
What you can build
Create and send invoices from your own order flow in Vyfakturuj.cz, and mark them paid when the money comes in.
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.
- The API is version 2 with an OpenAPI file and a developer newsletter for changes. Webhooks are described in the help centre.
Try it in your chat
Fill in what to read and write, and send it.
Build the Hypamoon recipe build-an-adapter for Vyfakturuj. API docs: https://api.vyfakturuj.cz/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 7 November 2026.
Vyfakturuj 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 Vyfakturuj. 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 Vyfakturuj?
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