Payments and billing
Connect Chaser to Hypamoon
Yes. Chaser 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 Chaser, answered from its own docs.
- Public API docs
- Yes. Chaser publishes an OpenAPI reference (Chaser API v1.11.1). Read the docs
- A key you create yourself
- Yes. You get an API key and secret yourself in Chaser under Organisation Settings, Integrations, Get API keys. openapi.chaserhq.com
- Versions or a changelog
- Yes. The reference carries a version number. openapi.chaserhq.com
- How it signs in
- HTTP Basic with your API key and API secret, base64 encoded.
- Webhooks
- Not confirmed.
- Hosting
- Cloud
What you can build
Push customers and invoices from your own system into Chaser so reminders go out automatically, and ask your chat which invoices are still being chased.
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.
- The rate limit is 200 requests per minute. An OpenAPI file can be imported into Postman.
Try it in your chat
Fill in what to read and write, and send it.
Build the Hypamoon recipe build-an-adapter for Chaser. API docs: https://openapi.chaserhq.com/docs/static/index.html. 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.
Chaser 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 Chaser. 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 Chaser?
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