# TriNet

**Canonical:** https://apis.io/providers/trinet/  
**Website:** https://www.trinet.com  
**APIs profiled:** 0

TriNet is a Dublin, California-based professional employer organization (PEO) for small and mid-market businesses, founded in 1988 by Martin Babinec and led today by President and CEO Mike Simonds. TriNet delivers full-service HR through a co-employment model — payroll processing, Fortune-500-grade health, retirement and ancillary benefits, workers' compensation, employment-practices liability coverage, compliance and risk management, and strategic HR advisory — to thousands of SMBs across the United States. The company offers two main packages: TriNet PEO (full co-employment) and HR Plus (technology platform plus support). TriNet is publicly traded on the NYSE as TNET with trailing-twelve-month revenue of roughly $5.0B as of FY2025. TriNet exposes its HR Customer Platform through three SwaggerHub-documented API groups — DCP, HRIS, and PEO — covering Employees, Companies, Payroll, Money, and Time-Off domains, with API credentials issued to approved customers and Integration Center partners rather than offered as a fully open developer program; OpenAPI/Swagger, Postman/Insomnia collections, a sandbox, OAuth playground, and webhook management are available to authorized developers. Public 1:1 API access typically requires partner-program qualification and technical review, which is why most TriNet customers consume the platform via the curated Integration Center marketplace (accounting, HRIS, identity, ATS, payroll, benefits and learning partners) or via unified-API aggregators such as Finch, Merge, Apideck and Truto.

## Kin Score — 13.5 / 100 (emerging)

Scored 2026-08-20 under rubric 0.12.0. Trend: flat (+0.0 from 13.5).

| Facet | Score |
|---|---|
| Discoverability | 50.0 |
| Contract Quality | 0.0 |
| Governance | 0.0 |
| Contract Governance | 0.0 |
| Operational Transparency | 0.0 |
| Developer Ergonomics | 21.4 |
| Commercial Clarity | 21.1 |
| Access Clarity | 21.1 |

## Agent readiness — 0.0 (human-only)

| Dimension | Value |
|---|---|
| Spec Presence | no |
| Agentic Access | no |
| Reversibility Documented | no |
| MCP Server | no |
| Auth Clarity | no |
| Idempotency | no |
| Error Semantics | no |
| OpenAPI Examples | no |
| Rate Limit Signal | no |
| Event Surface Described | no |
| Agent Skills | no |
| Well Known Catalog | no |
| Consent Identity | no |
| Agent Card | no |
| Dry Run Mode | no |

## Access

Unknown — onboarding: unknown, pricing: unknown, trial: no (confidence: low).

## Security (1)

- **Trinet Domain Security** — TLSv1.3 · HSTS · DMARC

## Tags

HR, Human Resources, PEO, Professional Employer Organization, Payroll, Benefits, HRIS, HCM, Workforce Management, Time Off, Compliance, Mid-Market, Small Business, Co-Employment, Fortune 1000

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/providers/trinet/). Scores are computed from the provider's own public artifacts under a published rubric.