Shops and shipping
Connect Returnless to Hypamoon
Yes. Returnless has a public, versioned API and you create the key yourself, so your chat can write the adapter.
OpenThe check
Three questions about the API of Returnless, answered from its own docs.
- Public API docs
- Yes. Public REST reference for returns, customers and shipments. Read the docs
- A key you create yourself
- Yes. Create an API key yourself under Integrations, API keys in the Returnless panel. support.returnless.com
- Versions or a changelog
- Yes. Date-versioned API (2025-01) in the base URL. docs.returnless.com
- How it signs in
- API key sent as a Bearer token.
- Webhooks
- Yes. It can tell your app when something changes. support.returnless.com
- Hosting
- Cloud
What you can build
Create and track returns from your own customer service flow and act on new returns through signed webhooks.
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
- 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.
Try it in your chat
Fill in what to read and write, and send it.
Build the Hypamoon recipe build-an-adapter for Returnless. API docs: https://docs.returnless.com/docs/api-rest-reference/64548cf9032b4-returnless. 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.
- docs.returnless.com/docs/api-rest-reference/64548cf9032b4-returnless
- support.returnless.com/article/1077-api-keys
- support.returnless.com/article/991-about-webhooks
Returnless 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 Returnless. 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 Returnless?
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