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ERP and accounting

Connect Clear Books to Hypamoon

Yes, with one catch. Clear Books 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 Clear Books, answered from its own docs.

Public API docs
Yes. REST API with docs at api-docs.clearbooks.co.uk; the old SOAP API takes no new apps. Read the docs
A key you create yourself
Yes. You register an app and generate keys in the self service developer portal, with multi factor login. clearbooks.co.uk
Versions or a changelog
Yes. The API reference is versioned (1.0.0) and has a Breaking changes section that lists which changes count as non breaking. api-docs.clearbooks.co.uk
How it signs in
OAuth 2.0 authorization code flow for confidential clients, with access and refresh tokens; one active token per user per app.
Webhooks
Not confirmed.
Hosting
Cloud

In practice

What it takes in a real Clear Books administration.

Getting access
Register an app in the Clear Books developer portal and generate keys there.
Limits
None published.
Writing
Not confirmed.
Cost
Not published.

What you can build

Create sales invoices in Clear Books from your own order flow, and ask your chat which customers still owe you.

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

  • Clear Books signs in with OAuth or signed requests only, with tokens that expire. The Hypamoon vault holds a fixed key today, so an adapter for Clear Books takes more work: ask your chat to check this first.
  • Register your app in the Clear Books developer portal. Sustained traffic above 5 requests per second may be throttled. The SOAP API is discontinued for new applications.

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 Clear Books. API docs: https://api-docs.clearbooks.co.uk/. 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.

Clear Books 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 Clear Books. Found something that changed? Tell us at support.

More in erp and accounting

All 1094 tools

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.

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

Ready to connect Clear Books?

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