Payments and billing
Connect Barclays to Hypamoon
Possible, with help from Barclays. The API is documented, but you cannot just create a key: access goes through Barclays first.
PossibleThe check
Three questions about the API of Barclays, answered from its own docs.
- Public API docs
- Yes. Barclays API Exchange documents Open Banking APIs (account information, payment initiation, confirmation of funds, consent) with a sandbox and a knowledge base. Read the docs
- A key you create yourself
- No. Production Open Banking APIs need FCA authorisation and enrolment in the Open Banking Directory; Barclays offers no API key for a business to read its own accounts. developer.barclays.com
- Versions or a changelog
- Yes. The APIs follow the versioned UK Open Banking Standard. developer.barclays.com
- How it signs in
- OAuth 2.0 and OpenID Connect (FAPI) with a software statement from the Open Banking Directory and mutual TLS.
- Webhooks
- Not confirmed.
- Hosting
- Cloud
- Condition
- Only FCA authorised providers can use the production APIs. A normal business reads its Barclays accounts through a licensed aggregator; TrueLayer, for example, lets non-regulated clients use its own consent flow (https://docs.truelayer.com/docs/data-api-basics).
What you can build
See your Barclays business account transactions in your own dashboard through an open banking aggregator, and match incoming payments to invoices.
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
- Barclays signs in with OAuth or signed requests only, with tokens that expire. The Hypamoon vault holds a fixed key today, so an adapter for Barclays takes more work: ask your chat to check this first.
- Barclays' public APIs are Open Banking APIs for regulated third party providers. Statement files from online banking are the other route for your own data.
Try it in your chat
First get access from Barclays. Then fill in what to read and write, and send it.
Build the Hypamoon recipe build-an-adapter for Barclays. API docs: https://developer.barclays.com/open-banking. 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.
Barclays 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 Barclays. 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 Barclays?
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