--- title: "Connect Workday to Hypamoon" description: "Workday has an open API. See what you can build with it in Hypamoon, how it signs in, and the sources we checked." url: https://hypamoon.com/connect-to/workday --- 1. [Connect to](https://hypamoon.com/connect-to) 2. Workday 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. Open ## The 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](https://community.workday.com/sites/default/files/file-hosting/productionapi/index.html) **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](https://developer.workday.com/doc/GUID-6c598444-ce67-40d5-bd95-267ecfe439b8-enHYPHENus.md) **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](https://developer.workday.com/doc/GUID-85810465-bcfb-4fdf-a26d-55eaff3968a8-enHYPHENus.md) **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](https://hypamoon.com/docs/adapters) ### 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. Say this in your chat > 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: \[what, or nothing\]. [Open in Claude](https://claude.ai/new?q=Build%20the%20Hypamoon%20recipe%20build-an-adapter%20for%20Workday.%20API%20docs%3A%20https%3A%2F%2Fdeveloper.workday.com%2Fdoc%2FGUID-86d66a6b-5d1a-40e4-af1b-ba4859f5df5a-enHYPHENus.md.%20Read%3A%20%5Bwhat%5D.%20Write%3A%20%5Bwhat%2C%20or%20nothing%5D.) 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](https://hypamoon.com/r/build-an-adapter) ## Sources Checked on 1 November 2026. - [community.workday.com/sites/default/files/file-hosting/productionapi/index.html](https://community.workday.com/sites/default/files/file-hosting/productionapi/index.html) - [developer.workday.com/doc/GUID-6c598444-ce67-40d5-bd95-267ecfe439b8-enHYPHENus.md](https://developer.workday.com/doc/GUID-6c598444-ce67-40d5-bd95-267ecfe439b8-enHYPHENus.md) - [developer.workday.com/doc/GUID-85810465-bcfb-4fdf-a26d-55eaff3968a8-enHYPHENus.md](https://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](https://hypamoon.com/support#contact). ## More in hr, payroll and shifts - [**ADP Workforce Now** Possible](https://hypamoon.com/connect-to/adp-workforce-now) - [**BambooHR** Open](https://hypamoon.com/connect-to/bamboohr) - [**Deel** Open](https://hypamoon.com/connect-to/deel) - [**Factorial** Open](https://hypamoon.com/connect-to/factorial) - [**Gusto** Possible](https://hypamoon.com/connect-to/gusto) - [**HiBob** Open](https://hypamoon.com/connect-to/hibob) - [**Loket.nl** Possible](https://hypamoon.com/connect-to/loket-nl) - [**Nmbrs** Open](https://hypamoon.com/connect-to/nmbrs) - [**Paychex Flex** Possible](https://hypamoon.com/connect-to/paychex-flex) - [**Paylocity** Possible](https://hypamoon.com/connect-to/paylocity) - [**Personio** Open](https://hypamoon.com/connect-to/personio) - [**Planday** Open](https://hypamoon.com/connect-to/planday) - [**Remote** Open](https://hypamoon.com/connect-to/remote) - [**Rippling** Open](https://hypamoon.com/connect-to/rippling) - [**Shiftbase** Open](https://hypamoon.com/connect-to/shiftbase) - [**UKG Pro** Open](https://hypamoon.com/connect-to/ukg-pro) [All 267 tools](https://hypamoon.com/connect-to) ## 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. [Open in Claude](https://claude.ai/new?q=Check%20if%20%5Bsoftware%5D%20has%20an%20open%20API%20that%20a%20Hypamoon%20adapter%20can%20use%3A%20public%20API%20docs%2C%20a%20key%20or%20token%20I%20can%20create%20myself%20without%20asking%20the%20vendor%2C%20and%20versions%20or%20a%20changelog.%20Link%20the%20pages%20you%20used.) [Open in ChatGPT](https://chatgpt.com/?q=Check%20if%20%5Bsoftware%5D%20has%20an%20open%20API%20that%20a%20Hypamoon%20adapter%20can%20use%3A%20public%20API%20docs%2C%20a%20key%20or%20token%20I%20can%20create%20myself%20without%20asking%20the%20vendor%2C%20and%20versions%20or%20a%20changelog.%20Link%20the%20pages%20you%20used.) 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. [Start free](https://app.hypamoon.com/?mode=signup&utm_source=connect-to&utm_campaign=workday) Works in Claude and ChatGPT. [Add to Claude](https://hypamoon.com/connect?via=connect-to~workday#claude) [Add to ChatGPT](https://hypamoon.com/connect?via=connect-to~workday#chatgpt)