TriNet Group is a professional employer organization (PEO) providing small and midsize businesses with full-service human resources solutions including payroll processing, employee benefits administration, risk management, compliance, and HR technology. TriNet serves over 16,000 companies and 340,000 worksite employees across verticals including technology, financial services, life sciences, professional services, and nonprofits.
TriNet offers five authenticated REST APIs accessible through the TriNet API Portal:
| API | Description |
|---|---|
| Company API | Company-level HR data including departments, holidays, workers comp codes, and org structure |
| Employees API | Full lifecycle employee data management including retrieval, onboarding, and record updates |
| Payroll API | Employee payroll and compensation data including pay rates, frequency, bonuses, and additional pay |
| Identity API | Secure access to employee PII including SSN for authorized, scoped integrations |
| Manage Employee API | Employee role and access permission management within the TriNet platform |
TriNet APIs use OAuth 2.0. Access requires approval via the TriNet developer sign-up process and API key assignment. Each endpoint is protected by specific OAuth scopes. See OAuth Scopes documentation.
TriNet provides a pre-built Integration Center with connectors for QuickBooks Online, Salesforce, Okta, and other business platforms. For custom integrations, the five core APIs enable data flow between TriNet and external applications.
- Employee data synchronization with HRIS platforms
- Payroll integration with accounting systems
- Benefits enrollment automation
- HR system integration and data consolidation
- Compliance and headcount reporting
- Automated onboarding workflows
- Website: https://www.trinet.com
- Developer Portal: https://apidocs.trinet.com/home
- Integration Center: https://www.trinet.com/hr-services/technology-platform/integration-center/api
- SwaggerHub Portal: https://trinet.portal.swaggerhub.com/
Tags: Benefits, Compliance, Human Resources, Payroll, Professional Employer Organization, Risk Management