--- title: "Worldline Online Payments API ยท Hypamoon" description: "The Worldline Online Payments API is open, signs in with signed requests and sends webhooks. What your AI chat can build with it on Hypamoon, with sources." url: https://hypamoon.com/connect-to/worldline-online-payments --- 1. [Connect to](https://hypamoon.com/connect-to) 2. Worldline Online Payments Payments and billing # Connect Worldline Online Payments to Hypamoon Yes, with one catch. Worldline Online Payments has an open API that you can use yourself, but it signs in with OAuth only, and that takes more work in a Hypamoon adapter today. Open ## The check Three questions about the API of Worldline Online Payments, answered from its own docs. **Public API docs**\ **Yes.** [Read the docs](https://docs.direct.worldline-solutions.com/en/integration/api-developer-guide/authentication) **A key you create yourself**\ **Yes.** In the Merchant Portal under Developer > Payment API, select Add API Key to create a key and secret pair. [docs.direct.worldline-solutions.com](https://docs.direct.worldline-solutions.com/en/integration/api-developer-guide/authentication) **Versions or a changelog**\ **Yes.** Release notes, and earlier base URLs stay available until further notice. [docs.direct.worldline-solutions.com](https://docs.direct.worldline-solutions.com/en/about/release-notes) **How it signs in**\ An API key and secret tied to your PSPID; each server request is signed with them, which the server SDKs do for you. **Webhooks**\ **Yes.** It can tell your app when something changes. [docs.direct.worldline-solutions.com](https://docs.direct.worldline-solutions.com/en/integration/api-developer-guide/webhooks) **Hosting**\ Cloud **Condition**\ A live Worldline account needs a contract and onboarding by Worldline before production keys process real payments. ## Your own payments overview on Worldline, for support and finance. - Payments, refunds and payment links, from the Worldline Online Payments API and webhooks. - AI that spots unusual refunds and failed payments, with you approving every refund. - A screen for your team and a weekly email for finance. ### Ask your chat Answers straight from your Worldline Online Payments data, in Claude or another chat with the full Hypamoon connection. - Which payments failed yesterday, and for which orders? - How much did we refund this month, and to which customers? ### When something happens Worldline Online Payments sends a webhook to your app, and the app asks AI what happens next. 1. When A payment is refused or cancelled. AI decides AI checks the order and decides whether the customer should get a new payment link. Then The customer gets an email with a link, after you approve it. ### A screen for your team or customers An app on your own address, with sign-in, on top of the same Worldline Online Payments data. - For your team Support looks up a payment by order number and sees its status and refunds. Worldline Online Payments 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 Worldline Online Payments waits for your approval, one call at a time. [How adapters work](https://hypamoon.com/docs/adapters) ### Good to know - Worldline Online Payments signs in with OAuth or signed requests only, with tokens that expire. The Hypamoon vault holds a fixed key today, so an adapter for Worldline Online Payments takes more work: ask your chat to check this first. - A key and secret pair expires one year after creation, and the secret is shown only once. Creating a new pair makes the old one expire within four hours. ## 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 Worldline Online Payments. API docs: https://docs.direct.worldline-solutions.com/en/integration/api-developer-guide/authentication. Read: \[what\]. Write: \[what, or nothing\]. [Open in Claude](https://claude.ai/new?q=Build%20the%20Hypamoon%20recipe%20build-an-adapter%20for%20Worldline%20Online%20Payments.%20API%20docs%3A%20https%3A%2F%2Fdocs.direct.worldline-solutions.com%2Fen%2Fintegration%2Fapi-developer-guide%2Fauthentication.%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.direct.worldline-solutions.com/en/integration/api-developer-guide/authentication](https://docs.direct.worldline-solutions.com/en/integration/api-developer-guide/authentication) - [docs.direct.worldline-solutions.com/en/about/release-notes](https://docs.direct.worldline-solutions.com/en/about/release-notes) - [docs.direct.worldline-solutions.com/en/integration/api-developer-guide/webhooks](https://docs.direct.worldline-solutions.com/en/integration/api-developer-guide/webhooks) Worldline Online Payments 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 Worldline Online Payments. Found something that changed? Tell us at [support](https://hypamoon.com/support#contact). ## More in payments and billing - [**Adyen** Open](https://hypamoon.com/connect-to/adyen) - [**Authorize.net** Open](https://hypamoon.com/connect-to/authorize-net) - [**Buckaroo** Unknown](https://hypamoon.com/connect-to/buckaroo) - [**Chargebee** Open](https://hypamoon.com/connect-to/chargebee) - [**Klarna** Open](https://hypamoon.com/connect-to/klarna) - [**Mollie** Open](https://hypamoon.com/connect-to/mollie) - [**MultiSafepay** Open](https://hypamoon.com/connect-to/multisafepay) - [**PayPal** Open](https://hypamoon.com/connect-to/paypal) - [**Recurly** Open](https://hypamoon.com/connect-to/recurly) - [**Stripe** Open](https://hypamoon.com/connect-to/stripe) - [**WeFact** Open](https://hypamoon.com/connect-to/wefact) - [**Pay.** Open](https://hypamoon.com/connect-to/pay-nl) - [**Billit** Open](https://hypamoon.com/connect-to/billit) - [**easybill** Open](https://hypamoon.com/connect-to/easybill) - [**GoCardless** Open](https://hypamoon.com/connect-to/gocardless) - 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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 Worldline Online Payments? 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=worldline-online-payments) Works in Claude, ChatGPT and Copilot. [Add to Claude](https://hypamoon.com/connect?via=connect-to~worldline-online-payments#claude) [Add to ChatGPT](https://hypamoon.com/connect?via=connect-to~worldline-online-payments#chatgpt) [Add to Copilot](https://hypamoon.com/docs/microsoft-copilot)