Payments and billing
Connect Commerzbank to Hypamoon
Possible, with help from Commerzbank. The API is documented, but you cannot just create a key: access goes through Commerzbank first.
PossibleThe check
Three questions about the API of Commerzbank, answered from its own docs.
- Public API docs
- Yes. The Commerzbank Developer Portal has a quickstart guide, an API catalog and sandbox specs, including a Corporate Payments API for corporate and small business customers. Read the docs
- A key you create yourself
- No. You create a project and sandbox credentials yourself, but live use is requested through the portal, then Commerzbank sends a contract and issues a client certificate from your CSR. developer.commerzbank.com
- Versions or a changelog
- Yes. APIs carry a version in their path, such as customers-api v2 and securities-api v4. developer.commerzbank.com
- How it signs in
- OAuth 2.0 with credentials from your portal project, over mutual TLS with a client certificate issued by Commerzbank.
- Webhooks
- Yes. It can tell your app when something changes. developer.commerzbank.com
- Hosting
- Cloud
- Condition
- Live use needs a signed contract with Commerzbank and a client certificate that Commerzbank issues.
What you can build
Collect account information and send payments from your own cash management or ERP through the Corporate Payments API, with you approving every payment.
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
- Commerzbank signs in with OAuth or signed requests only, with tokens that expire. The Hypamoon vault holds a fixed key today, so an adapter for Commerzbank takes more work: ask your chat to check this first.
- The Corporate Payments API is meant for corporate and small business customers who connect their own systems. A Webhook API exists, with certificate pinning.
Try it in your chat
First get access from Commerzbank. Then fill in what to read and write, and send it.
Build the Hypamoon recipe build-an-adapter for Commerzbank. API docs: https://developer.commerzbank.com/how-to/quickstart-guide. 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.
Commerzbank 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 Commerzbank. 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 Commerzbank?
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