API registry / Fourth
Fourth
Multiple vendor Swagger 2.0 files with dated Drupal upload paths (will change on re-upload). Hosts are per tenant and not public. Other Fourth APIs (inventory/Adaco, POS, tasks, notifications, recipes) also have reference pages but are not HRIS.
Fourth UK Employee API
Verified- Format
- Swagger 2.0 · 2.0
- Source
- Vendor
- URL
- https://developer.fourth.com/sites/default/files/2021-12/uk-employee_2021-12-23.json
- Server
- http://localhost:54541
- Operations
- 31
- API version
- v1
- Last changed
- 31 Oct 2026
- sha256
- ac0123f7f7969cec… · 109 KB
Linked from https://developer.fourth.com/en-gb/docs/uk-employee-api/reference. Host in spec is localhost; real host is per customer and supplied by Fourth (<ROOT>/organisations/{organisationId}/). Note: the developer portal returned HTTP 406 to a browser-like custom User-Agent but 200 to plain curl.
Fourth Labor Productivity API
Verified- Format
- Swagger 2.0 · 2.0
- Source
- Vendor
- URL
- https://developer.fourth.com/sites/default/files/2024-05/2024-05-30_LaborProductivity_0.json
- Server
- http://localhost:50000
- Operations
- 32
- API version
- v1
- Last changed
- 31 Oct 2026
- sha256
- de6ec04e410705f7… · 188 KB
HR-system import API (employees, employments, assignments, absences, job titles, locations). Host per customer (<ROOT>/import/{organizationId}/); spec host is localhost.
Fourth Account SCIM API
Verified- Format
- Swagger 2.0 · 2.0
- Source
- Vendor
- URL
- https://developer.fourth.com/sites/default/files/2021-01/fourth-account-scim-api_2021-01-13-b.json
- Operations
- 6
- API version
- v1
- Last changed
- 31 Oct 2026
- sha256
- be41877b773c9ceb… · 54 KB
User provisioning.
Fourth Schedules API
Verified- Format
- Swagger 2.0 · 2.0
- Source
- Vendor
- URL
- https://developer.fourth.com/sites/default/files/2025-10/schedules-api-2025-10-06_0.json
- Server
- http://localhost:54707
- Operations
- 1
- API version
- v1
- Last changed
- 31 Oct 2026
- sha256
- 70c99924ef608ee5… · 6 KB
Single endpoint.