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Guides Reference Changelog API Upgrades

Guides Reference

v2025-01-01

Guides Reference Changelog API Upgrades

Guides

v2025-01-01

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Getting Started

Overview
Quickstart
Check Console
- Working with Check Console
- API Logs
Status Page

API

Understanding Sandbox and Production Environments
Webhooks
Request Patterns
Rate limiting
Sensitive Data API
Request logs
Metadata

CHECK AI

Check MCP Server
- [Coming Soon] Hosted (Remote)
- Self-Hosted
Check Command Line Interface (CLI)

Check Components

Overview
Check Component Library
- Live Component Example
Working with Check Components

Onboarding & Setup

Onboard Status
Address Validation
Implementation Status
Company Enrollment
- Automatic Federal EIN Verification
- Uploading Company Provided Documents
Employee Setup
Requirements API
External Payrolls
- External Payrolls Validations

Working with Payroll

Core Concepts
Structuring Earnings
Calculating Payroll Taxes
Payroll Reporting
- Payroll Journal with Workplace Breakdown
- Advanced Payroll Reporting Breakdowns
Payments Overview

Tax Payments & Filings

Tax Parameters
- Working with tax parameter settings
Tax Filings
- Tax Filings: Sandbox testing guide
- Migrating from the Legacy Tax Filings API
Employee Tax Statements and Tax Packages
Tax Deposits

Notifications & Communications

Managing Employer & Worker Communications
Notification & Communication Library

Usage

Billing customers

Ecosystem Partnerships

Check + SimplyInsured Integration Guide
Check + Next Workers' Compensation Integration Guide
Check + Vestwell 401(k) Integration Guide
Check + Human Interest Integration Guide
Check OAuth Integration Guide

Overview

Welcome to Check’s API documentation!

Updated 6 months ago

What’s Next

Ready to dive in? Check out our Quickstart guide:

Quickstart