---
title: "PAYONE API: connect it to your AI chat · Hypamoon"
description: "The PAYONE API is open, signs in with an API key and sends webhooks. What your AI chat can build with it on Hypamoon, with sources."
url: https://hypamoon.com/connect-to/payone
---

1.  [Connect to](https://hypamoon.com/connect-to)
2.  PAYONE

Payments and billing

# Connect PAYONE to Hypamoon

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

Open

## The check

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

**Public API docs**\
**Yes.** [Read the docs](https://docs.payone.com/integration/channel-server-api)

**A key you create yourself**\
**Yes.** The merchant ID, portal ID and portal key are in the PAYONE Merchant Interface (PMI) of your account. [docs.payone.com](https://docs.payone.com/integration/channel-server-api)

**Versions or a changelog**\
**Yes.** An api\_version parameter with dated versions. [docs.payone.com](https://docs.payone.com/integration/channel-server-api)

**How it signs in**\
Merchant ID, portal ID and the portal key (as an MD5 or SHA2-384 value) sent with every Server API request.

**Webhooks**\
**Yes.** It can tell your app when something changes. [docs.payone.com](https://docs.payone.com/integration/response-handling)

**Hosting**\
Cloud

**Condition**\
You need a PAYONE merchant contract; the IDs and key belong to that account.

## Your own payments overview on PAYONE, for support and finance.

-   Transactions, refunds and status changes, from the PAYONE Server API and TransactionStatus notifications.
-   AI that spots failed debits and drafts a reminder, with you approving what goes out.
-   A screen for your team and a weekly email for finance.

### Ask your chat

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

-   Which direct debits came back this month, and for which customers?
-   How much did we refund last week?

### When something happens

PAYONE sends a webhook to your app, and the app asks AI what happens next.

1.  When

    A TransactionStatus notification reports a returned debit.

    AI decides

    AI checks the customer's history and drafts a friendly reminder.

    Then

    You approve it and the customer gets an email.

### A screen for your team or customers

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

-   For your team

    Support looks up a transaction by reference and sees its status.

PAYONE 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 PAYONE waits for your approval, one call at a time. [How adapters work](https://hypamoon.com/docs/adapters)

### 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.
-   This is the PAYONE Classic platform (Server API). PAYONE also runs the newer Commerce Platform with its own API reference and webhooks API.

## 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 PAYONE. API docs: https://docs.payone.com/integration/channel-server-api. Read: \[what\]. Write: \[what, or nothing\].

[Open in Claude](https://claude.ai/new?q=Build%20the%20Hypamoon%20recipe%20build-an-adapter%20for%20PAYONE.%20API%20docs%3A%20https%3A%2F%2Fdocs.payone.com%2Fintegration%2Fchannel-server-api.%20Read%3A%20%5Bwhat%5D.%20Write%3A%20%5Bwhat%2C%20or%20nothing%5D.)

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](https://hypamoon.com/r/build-an-adapter)

## Sources

Checked on 7 November 2026.

-   [docs.payone.com/integration/channel-server-api](https://docs.payone.com/integration/channel-server-api)
-   [docs.payone.com/integration/response-handling](https://docs.payone.com/integration/response-handling)

PAYONE 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 PAYONE. Found something that changed? Tell us at [support](https://hypamoon.com/support#contact).

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[All 1094 tools](https://hypamoon.com/connect-to)

## 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](https://claude.ai/new?q=Check%20if%20%5Bsoftware%5D%20has%20an%20open%20API%20that%20a%20Hypamoon%20adapter%20can%20use%3A%20public%20API%20docs%2C%20a%20key%20or%20token%20I%20can%20create%20myself%20without%20asking%20the%20vendor%2C%20and%20versions%20or%20a%20changelog.%20Link%20the%20pages%20you%20used.) [Open in ChatGPT](https://chatgpt.com/?q=Check%20if%20%5Bsoftware%5D%20has%20an%20open%20API%20that%20a%20Hypamoon%20adapter%20can%20use%3A%20public%20API%20docs%2C%20a%20key%20or%20token%20I%20can%20create%20myself%20without%20asking%20the%20vendor%2C%20and%20versions%20or%20a%20changelog.%20Link%20the%20pages%20you%20used.)

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

## Ready to connect PAYONE?

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

[Start free](https://app.hypamoon.com/?mode=signup&utm_source=connect-to&utm_campaign=payone)

Works in Claude, ChatGPT and Copilot. [Add to Claude](https://hypamoon.com/connect?via=connect-to~payone#claude) [Add to ChatGPT](https://hypamoon.com/connect?via=connect-to~payone#chatgpt) [Add to Copilot](https://hypamoon.com/docs/microsoft-copilot)