--- title: "Nexi Checkout API: connect it to your AI chat ยท Hypamoon" description: "The Nexi Checkout 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/nexi-checkout --- 1. [Connect to](https://hypamoon.com/connect-to) 2. Nexi Checkout Payments and billing # Connect Nexi Checkout to Hypamoon Yes. Nexi Checkout 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 Nexi Checkout, answered from its own docs. **Public API docs**\ **Yes.** [Read the docs](https://developer.nexigroup.com/nexi-checkout/en-EU/docs/) **A key you create yourself**\ **Yes.** In the Checkout Portal under Company Integration, copy the secret key for test or live. [developer.nexigroup.com](https://developer.nexigroup.com/nexi-checkout/en-EU/docs/get-integration-keys/) **Versions or a changelog**\ **Yes.** Dated change log, most recent entry October 2026. [developer.nexigroup.com](https://developer.nexigroup.com/nexi-checkout/en-EU/change-log/) **How it signs in**\ The secret API key from the Checkout Portal in the Authorization header; a separate checkout key identifies your webshop in the browser. **Webhooks**\ **Yes.** It can tell your app when something changes. [developer.nexigroup.com](https://developer.nexigroup.com/nexi-checkout/en-EU/docs/track-events-using-webhooks/) **Hosting**\ Cloud **Condition**\ You need a Nexi Checkout account; live payments start once Nexi has approved the account. ## Your own payments overview on Nexi Checkout, for support and finance. - Payments, charges, refunds and subscriptions, from the Nexi Checkout API and webhooks. - AI that spots failed subscription charges and drafts a reminder, with you approving what goes out. - A screen for support and a weekly email for finance. ### Ask your chat Answers straight from your Nexi Checkout data, in Claude or another chat with the full Hypamoon connection. - Which subscription charges failed this month? - Which payments are reserved but not charged yet? ### When something happens Nexi Checkout sends a webhook to your app, and the app asks AI what happens next. 1. When A charge fails. AI decides AI checks the customer and drafts a short message asking to update the card. 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 Nexi Checkout data. - For your team Support looks up a payment by order number and sees whether it was reserved, charged or refunded. Nexi Checkout 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 Nexi Checkout 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. - Formerly Nets Easy. Webhooks are set per payment in the create payment request, not in a portal setting. ## 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 Nexi Checkout. API docs: https://developer.nexigroup.com/nexi-checkout/en-EU/docs/. Read: \[what\]. Write: \[what, or nothing\]. [Open in Claude](https://claude.ai/new?q=Build%20the%20Hypamoon%20recipe%20build-an-adapter%20for%20Nexi%20Checkout.%20API%20docs%3A%20https%3A%2F%2Fdeveloper.nexigroup.com%2Fnexi-checkout%2Fen-EU%2Fdocs%2F.%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. - [developer.nexigroup.com/nexi-checkout/en-EU/docs/](https://developer.nexigroup.com/nexi-checkout/en-EU/docs/) - [developer.nexigroup.com/nexi-checkout/en-EU/docs/get-integration-keys/](https://developer.nexigroup.com/nexi-checkout/en-EU/docs/get-integration-keys/) - [developer.nexigroup.com/nexi-checkout/en-EU/change-log/](https://developer.nexigroup.com/nexi-checkout/en-EU/change-log/) - [developer.nexigroup.com/nexi-checkout/en-EU/docs/track-events-using-webhooks/](https://developer.nexigroup.com/nexi-checkout/en-EU/docs/track-events-using-webhooks/) Nexi Checkout 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 Nexi Checkout. 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) - [**Paddle** Open](https://hypamoon.com/connect-to/paddle) - [**Recharge** Open](https://hypamoon.com/connect-to/recharge) - [**Lemon Squeezy** Open](https://hypamoon.com/connect-to/lemon-squeezy) - [**Unzer** Open](https://hypamoon.com/connect-to/unzer) - [**Vipps MobilePay** Open](https://hypamoon.com/connect-to/vipps-mobilepay) - [**Mondu** Possible](https://hypamoon.com/connect-to/mondu) - [**PayPlug** Open](https://hypamoon.com/connect-to/payplug) - [**Billomat** Open](https://hypamoon.com/connect-to/billomat) - [**FastBill** Open](https://hypamoon.com/connect-to/fastbill) - [**Aruba Fatturazione Elettronica** Possible](https://hypamoon.com/connect-to/aruba-fatturazione-elettronica) - [**InvoiceXpress** Open](https://hypamoon.com/connect-to/invoicexpress) - [**Fakturownia** Open](https://hypamoon.com/connect-to/fakturownia) - [**Oblio** Unknown](https://hypamoon.com/connect-to/oblio) - [**SuperFaktura** Open](https://hypamoon.com/connect-to/superfaktura) - [**Szamlazz.hu** Unknown](https://hypamoon.com/connect-to/szamlazz-hu) - [**Billingo** Open](https://hypamoon.com/connect-to/billingo) - [**Elorus** Open](https://hypamoon.com/connect-to/elorus) - [**SmartBill** Possible](https://hypamoon.com/connect-to/smartbill) - [**iDoklad** Open](https://hypamoon.com/connect-to/idoklad) - [**Vyfakturuj** Open](https://hypamoon.com/connect-to/vyfakturuj) - [**Zuora** Open](https://hypamoon.com/connect-to/zuora) - [**Maxio (Chargify)** Open](https://hypamoon.com/connect-to/maxio) - [**Lago** Open](https://hypamoon.com/connect-to/lago) - [**Orb** Open](https://hypamoon.com/connect-to/orb) - [**Metronome** Open](https://hypamoon.com/connect-to/metronome) - [**FastSpring** Open](https://hypamoon.com/connect-to/fastspring) - [**Invoice Ninja** Open](https://hypamoon.com/connect-to/invoice-ninja) - [**Bonsai** Open](https://hypamoon.com/connect-to/bonsai) - [**Zervant** Closed](https://hypamoon.com/connect-to/zervant) - [**Payt** Open](https://hypamoon.com/connect-to/payt) - [**Upflow** Open](https://hypamoon.com/connect-to/upflow) - [**Chaser** Open](https://hypamoon.com/connect-to/chaser) - [**Onguard** Closed](https://hypamoon.com/connect-to/onguard) - [**Kolleno** Unknown](https://hypamoon.com/connect-to/kolleno) - [**Twikey** Open](https://hypamoon.com/connect-to/twikey) - [**Versapay** Open](https://hypamoon.com/connect-to/versapay) - [**Billtrust** Unknown](https://hypamoon.com/connect-to/billtrust) - [**HighRadius** Closed](https://hypamoon.com/connect-to/highradius) - [**Tesorio** Closed](https://hypamoon.com/connect-to/tesorio) - [**ING** Possible](https://hypamoon.com/connect-to/ing) - [**Rabobank** Possible](https://hypamoon.com/connect-to/rabobank) - [**ABN AMRO** Possible](https://hypamoon.com/connect-to/abn-amro) - [**bunq** Open](https://hypamoon.com/connect-to/bunq) - [**Triodos Bank** Possible](https://hypamoon.com/connect-to/triodos) - [**Knab** Possible](https://hypamoon.com/connect-to/knab) - [**KBC** Possible](https://hypamoon.com/connect-to/kbc) - [**BNP Paribas Fortis** Possible](https://hypamoon.com/connect-to/bnp-paribas-fortis) - [**Belfius** Possible](https://hypamoon.com/connect-to/belfius) - [**Deutsche Bank** Possible](https://hypamoon.com/connect-to/deutsche-bank) - [**Commerzbank** Possible](https://hypamoon.com/connect-to/commerzbank) - [**Sparkasse (FinTS)** Possible](https://hypamoon.com/connect-to/sparkasse) - [**N26 Business** Possible](https://hypamoon.com/connect-to/n26-business) - [**Kontist** Open](https://hypamoon.com/connect-to/kontist) - [**BNP Paribas** Possible](https://hypamoon.com/connect-to/bnp-paribas) - [**Credit Agricole** Closed](https://hypamoon.com/connect-to/credit-agricole) - [**Societe Generale** Possible](https://hypamoon.com/connect-to/societe-generale) - [**Shine** Possible](https://hypamoon.com/connect-to/shine) - [**Revolut Business** Possible](https://hypamoon.com/connect-to/revolut-business) - [**Wise Business** Open](https://hypamoon.com/connect-to/wise-business) - [**Checkout.com** Open](https://hypamoon.com/connect-to/checkout-com) - [**Worldline Online Payments** Open](https://hypamoon.com/connect-to/worldline-online-payments) - [**Worldpay** Possible](https://hypamoon.com/connect-to/worldpay) - [**Braintree** Open](https://hypamoon.com/connect-to/braintree) - [**CCV Online Payments** Possible](https://hypamoon.com/connect-to/ccv-online-payments) - [**Rabo Smart Pay** Open](https://hypamoon.com/connect-to/rabo-smart-pay) - [**PAYONE** Open](https://hypamoon.com/connect-to/payone) - [**Mangopay** Open](https://hypamoon.com/connect-to/mangopay) - [**Lemonway** Open](https://hypamoon.com/connect-to/lemonway) - [**Rapyd** Open](https://hypamoon.com/connect-to/rapyd) - [**Tpay** Open](https://hypamoon.com/connect-to/tpay) - [**PayU** Open](https://hypamoon.com/connect-to/payu) - [**Redsys** Open](https://hypamoon.com/connect-to/redsys) - [**MONEI** Open](https://hypamoon.com/connect-to/monei) - [**PAYCOMET** Open](https://hypamoon.com/connect-to/paycomet) - [**Dojo** Open](https://hypamoon.com/connect-to/dojo) - [**Cybersource** Open](https://hypamoon.com/connect-to/cybersource) - [**Airwallex** Open](https://hypamoon.com/connect-to/airwallex) - [**Satispay** Open](https://hypamoon.com/connect-to/satispay) - [**Global Payments** Possible](https://hypamoon.com/connect-to/global-payments) - [**Barclays** Possible](https://hypamoon.com/connect-to/barclays) - [**HSBC** Possible](https://hypamoon.com/connect-to/hsbc) - [**Lloyds Bank** Possible](https://hypamoon.com/connect-to/lloyds-bank) - [**NatWest** Possible](https://hypamoon.com/connect-to/natwest) - [**Starling Bank** Open](https://hypamoon.com/connect-to/starling-bank) - [**Tide** Possible](https://hypamoon.com/connect-to/tide) - [**Monzo Business** Closed](https://hypamoon.com/connect-to/monzo-business) - [**JPMorgan Chase** Possible](https://hypamoon.com/connect-to/jpmorgan-chase) - [**Bank of America** Possible](https://hypamoon.com/connect-to/bank-of-america) - [**Wells Fargo** Possible](https://hypamoon.com/connect-to/wells-fargo) - [**Mercury** Open](https://hypamoon.com/connect-to/mercury) - [**GoCardless Bank Account Data** Open](https://hypamoon.com/connect-to/gocardless-bank-account-data) - [**Tink** Possible](https://hypamoon.com/connect-to/tink) - [**Plaid** Open](https://hypamoon.com/connect-to/plaid) - [**TrueLayer** Possible](https://hypamoon.com/connect-to/truelayer) - [**Yapily** Possible](https://hypamoon.com/connect-to/yapily) - [**Salt Edge** Possible](https://hypamoon.com/connect-to/salt-edge) - [**Ponto (Isabel Group)** Possible](https://hypamoon.com/connect-to/ponto) - [**finAPI** Possible](https://hypamoon.com/connect-to/finapi) - [**Powens** Possible](https://hypamoon.com/connect-to/powens) - [**Bridge (Bridge API)** Possible](https://hypamoon.com/connect-to/bridge-api) - [**Enable Banking** Possible](https://hypamoon.com/connect-to/enable-banking) - [**MX** Possible](https://hypamoon.com/connect-to/mx) - [**Mastercard Open Finance (Finicity)** Possible](https://hypamoon.com/connect-to/mastercard-open-finance) - [**Teller** Possible](https://hypamoon.com/connect-to/teller) - [**Recommand** Open](https://hypamoon.com/connect-to/recommand) - [**Basware** Possible](https://hypamoon.com/connect-to/basware) - [**Avalara E-Invoicing** Possible](https://hypamoon.com/connect-to/avalara-e-invoicing) - [**Scrada** Possible](https://hypamoon.com/connect-to/scrada) - [**Digipoort** Possible](https://hypamoon.com/connect-to/digipoort) - [**Storecove** Unknown](https://hypamoon.com/connect-to/storecove) - [**Chorus Pro** Unknown](https://hypamoon.com/connect-to/chorus-pro) - [**Sovos** Possible](https://hypamoon.com/connect-to/sovos) - [**EDICOM** Unknown](https://hypamoon.com/connect-to/edicom) - [**ecosio** Possible](https://hypamoon.com/connect-to/ecosio) - [**Banqup** Open](https://hypamoon.com/connect-to/banqup) - [**Tradeshift** Open](https://hypamoon.com/connect-to/tradeshift) [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 Nexi Checkout? 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=nexi-checkout) Works in Claude, ChatGPT and Copilot. [Add to Claude](https://hypamoon.com/connect?via=connect-to~nexi-checkout#claude) [Add to ChatGPT](https://hypamoon.com/connect?via=connect-to~nexi-checkout#chatgpt) [Add to Copilot](https://hypamoon.com/docs/microsoft-copilot)