HR, payroll and shifts
Connect Workday to Hypamoon
Yes. Workday 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 Workday, answered from its own docs.
- Public API docs
- Yes. The SOAP web services directory and the REST documentation on the developer site are public. Read the docs
- A key you create yourself
- Yes. Your Workday administrators register an API client or create an integration system user in your own tenant; no partner program is needed. developer.workday.com
- Versions or a changelog
- Yes. Each REST service has its own version in the path and the SOAP services follow the release version (v47.0 for 2026R2). developer.workday.com
- How it signs in
- REST: OAuth 2.0 with a registered API client, where integrations can use a refresh token that does not expire. SOAP: username and password of an integration system user.
- Webhooks
- Not confirmed.
- Hosting
- Cloud
- Condition
- Only for Workday customers; a tenant administrator has to set up the API client or integration system user and its security groups.
What you can build
Look up workers, positions and time off from your chat, or feed new hires from a recruiting tool into Workday.
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.
- Access depends on the security groups of the integration user. REST list calls return at most 100 objects per page. The base URL includes your tenant host and tenant name.
Try it in your chat
Fill in what to read and write, and send it.
Build the Hypamoon recipe build-an-adapter for Workday. API docs: https://developer.workday.com/doc/GUID-86d66a6b-5d1a-40e4-af1b-ba4859f5df5a-enHYPHENus.md. 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 1 November 2026.
- community.workday.com/sites/default/files/file-hosting/productionapi/index.html
- developer.workday.com/doc/GUID-6c598444-ce67-40d5-bd95-267ecfe439b8-enHYPHENus.md
- developer.workday.com/doc/GUID-85810465-bcfb-4fdf-a26d-55eaff3968a8-enHYPHENus.md
Workday 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 Workday. Found something that changed? Tell us at support.
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 Workday?
Connect your chat once, then ask it to build the adapter.
Works in Claude and ChatGPT. Add to Claude Add to ChatGPT