# Check

**Canonical:** https://apis.io/providers/check-hq/  
**Website:** https://www.checkhq.com  
**APIs profiled:** 4

Check is an embedded payroll infrastructure platform that allows vertical SaaS, HR, workforce management, and financial services companies to natively offer payroll inside their own products. Check provides a comprehensive REST API, a library of white-labeled React components (Check Components and Check Onboard), a CLI, and a Model Context Protocol (MCP) server that together cover company and employee onboarding, pay schedules, payroll preview and approval, contractor payments, tax calculation, multi-state withholdings, tax filings, tax deposits, money movement, paystubs, garnishments, post-tax deductions, net pay splits, benefits (health, 401k, workers' comp), W-2 and 1099 generation, and webhook event delivery. Check operates in all 50 U.S. states plus D.C., has been incubated and led-funded by Stripe (Series B and Series C), and powers payroll for partners such as Homebase, ServiceTitan, 7shifts, Housecall Pro, Wave, Zoho, and Procare — collectively paying more than 1M employees across 35,000+ businesses and moving $15B+ annually.

## Kin Score — 13.6 / 100 (emerging)

Scored 2026-08-20 under rubric 0.12.0. Trend: flat (+0.0 from 13.6).

| Facet | Score |
|---|---|
| Discoverability | 72.2 |
| Contract Quality | 0.0 |
| Governance | 0.0 |
| Contract Governance | 0.0 |
| Operational Transparency | 26.3 |
| Developer Ergonomics | 25.0 |
| Commercial Clarity | 0.0 |
| Access Clarity | 0.0 |

Regulatory layer — **Payments**: 18.8 (matched via tags).

## Agent readiness — 4.1 (human-only)

| Dimension | Value |
|---|---|
| Spec Presence | no |
| Agentic Access | no |
| Reversibility Documented | no |
| MCP Server | documented |
| 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).

## APIs (4)

- **Check Payroll API** — The Check Payroll API is a comprehensive REST API for embedding end-to-end U.S. payroll inside another platform. It models companies, workplaces, employees, contractors, pay sch...
- **Check Components** — Check Components is a library of white-labeled, drop-in React UI elements that handle the highest-friction surfaces of embedded payroll — company onboarding, terms of service, b...
- **Check MCP Server** — The Check MCP Server exposes the Check Payroll API to AI tools and agents via the Model Context Protocol. It is offered as both a hosted (remote) endpoint requiring no infrastru...
- **Check CLI** — The Check Command-Line Interface is a Python-based CLI installed via the uv package manager that exposes 270 functions across 18 resource groups of the Check Payroll API. It is ...

## MCP servers (1)

- **MCP Server**

## Security (2)

- **Check Hq Domain Security** — TLSv1.3 · HSTS · DMARC
- **Check Hq Vulnerability Disclosure** — disclosure policy published

## Tags

Payroll, Embedded Payroll, Payroll Infrastructure, Payroll API, Tax Filing, Tax Calculation, Money Movement, HR, Human Resources, Workforce Management, Fintech, Compensation, Benefits, 1099, W-2, Contractor Payments, Embedded Finance

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