Check Technologies

Check Technologies (Check) is a Stripe-incubated embedded-payroll infrastructure company whose API lets vertical SaaS, HR, and time-tracking platforms embed full-service payroll directly into their own products. The Check API handles the hard parts of running payroll — worker onboarding, pay schedules, earnings and deductions, tax calculation, filing and remittance across federal, state, and local jurisdictions, contractor payments, and money movement — behind a white-labeled, developer-first surface. Platforms integrate through the REST API, embeddable white-labeled React Components (Company Onboard, Run Payroll, W-4 / tax setup, bank connection via Plaid, filing authorization), webhooks, a Model Context Protocol server for AI agents, and a Python CLI. Check is backed by Stripe, Index Ventures, Thrive Capital, Bedrock Capital, and Battery Ventures, and powers payroll for platforms including Homebase.

Check Technologies publishes 1 API on the APIs.io network. Tagged areas include Company, Payroll, Embedded Finance, Fintech, and Payments.

The Check Technologies catalog on APIs.io includes 1 event-driven AsyncAPI specification.

Check Technologies’ developer surface includes documentation, API reference, getting-started guide, authentication, support, engineering blog, signup flow, and 22 more developer resources.

🌐 Visit website 📡 Source on GitHub

53.8/100 developing ▬ flat Agent 49/100 agent native Full breakdown ↓
scored 2026-08-10 · rubric v0.9.1

AccessSelf serve

1 APIs 1 MCP Servers

CompanyPayrollEmbedded FinanceFintechPaymentsHuman ResourcesTaxComplianceDeveloper ToolsAPI

Kin Score

Kin Score How this is scored →
scored 2026-08-10 · rubric v0.9.1

Composite quality — 53.8/100 · developing

Contract Quality 12.9 / 25

Developer Ergonomics 14.8 / 20

Commercial Clarity 8.4 / 20

Operational Transparency 8.2 / 13

Governance 1.5 / 12

Discoverability 7.6 / 10

Agent readiness — 49/100 · agent native

Machine-Readable Contract 18 / 18

Agentic Access Contract 0 / 10

MCP Server 12 / 12

Machine-Readable Auth 10 / 10

Idempotency 9 / 9

Stable Error Semantics 8 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 0 / 7

Typed Event Surface 6 / 6

Agent Skills 0 / 5

Well-Known Catalog 0 / 4

Consent & Bot Identity 0 / 3

A2A Agent Card 0 / 8

Dry-Run / Simulate Mode 0 / 4

Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. This rating is computed from github.com/api-evangelist/check-technologies: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

APIs 1

Individual APIs this provider publishes, each with its own machine-readable definition.

Check Payroll API

Check's REST API for embedding full-service payroll — companies, employees, contractors, pay schedules, payrolls, payments, tax filings, documents, bank accounts, and webhooks —...

MCP Servers 1

Model Context Protocol servers that expose these APIs to AI agents.

Get Started 4

Portal, sign-up, and the first successful call

DeveloperPortal

GettingStarted

SignUp

Sandbox

Documentation 2

Reference material describing how the API behaves

Documentation

Documentation

APIReference

APIReference

Agent Surfaces 2

MCP servers, agent skills, and machine-readable catalogs

MCPServer

MCPServer

LLMsTxt

LLMsTxt

Design & Contract 7

Pagination, idempotency, versioning, errors, and events

Conformance

Lifecycle

Webhooks

Components

Conventions

Idempotency

ErrorCatalog

Scroll for all 7

Build 2

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

GitHubOrganization

CLI

CLI

Access & Security 5

Authentication, authorization, and security posture

DomainSecurity

Authentication

Security

Compliance

VulnerabilityDisclosure

VulnerabilityDisclosure

Operate 4

Status, limits, changes, and where to get help

Support

StatusPage

ChangeLog

Deprecation

Commercial 2

Pricing, plans, and the legal terms of use

TermsOfService

TermsOfService

PrivacyPolicy

PrivacyPolicy

Company 1

The organization behind the API

Blog

Blog

Source (apis.yml)

aid: check-technologies
name: Check Technologies
description: Check Technologies (Check) is a Stripe-incubated embedded-payroll infrastructure company whose API lets vertical
  SaaS, HR, and time-tracking platforms embed full-service payroll directly into their own products. The Check API handles
  the hard parts of running payroll — worker onboarding, pay schedules, earnings and deductions, tax calculation, filing and
  remittance across federal, state, and local jurisdictions, contractor payments, and money movement — behind a white-labeled,
  developer-first surface. Platforms integrate through the REST API, embeddable white-labeled React Components (Company Onboard,
  Run Payroll, W-4 / tax setup, bank connection via Plaid, filing authorization), webhooks, a Model Context Protocol server
  for AI agents, and a Python CLI. Check is backed by Stripe, Index Ventures, Thrive Capital, Bedrock Capital, and Battery
  Ventures, and powers payroll for platforms including Homebase.
url: https://raw.githubusercontent.com/api-evangelist/check-technologies/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- battery-ventures
x-tier: stub
x-tier-reason: portfolio-lead
accessModel:
  pricing: unknown
  onboarding: self-serve
  trial: false
  try_now: false
  public: false
  label: Self-serve signup
  confidence: medium
  source:
  - authentication
  generated: '2026-07-22'
  method: derived
specificationVersion: '0.20'
created: '2026-07-17'
modified: '2026-07-18'
tags:
- Company
- Payroll
- Embedded Finance
- Fintech
- Payments
- Human Resources
- Tax
- Compliance
- Developer Tools
- API
image: https://cdn.prod.website-files.com/671a2c705660d0119de1cc9f/671ac14172962caffbc11039_OG-IMAGE-1.png
apis:
- name: Check Payroll API
  description: Check's REST API for embedding full-service payroll — companies, employees, contractors, pay schedules, payrolls,
    payments, tax filings, documents, bank accounts, and webhooks — into a platform product.
  humanURL: https://docs.checkhq.com/reference
  baseURL: https://api.checkhq.com
  tags:
  - Payroll
  - Payments
  - Tax
  - HR
  properties:
  - type: Documentation
    url: https://docs.checkhq.com/docs/overview
  - type: APIReference
    url: https://docs.checkhq.com/reference
  - type: Webhooks
    url: https://docs.checkhq.com/docs/webhooks-1
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: DomainSecurity
  url: security/check-technologies-domain-security.yml
- type: DeveloperPortal
  url: https://docs.checkhq.com/
- type: Documentation
  url: https://docs.checkhq.com/docs/overview
- type: APIReference
  url: https://docs.checkhq.com/reference
- type: GettingStarted
  url: https://docs.checkhq.com/docs/quickstart
- type: Authentication
  url: authentication/check-technologies-authentication.yml
- type: Support
  url: https://docs.checkhq.com/
- type: Blog
  url: https://www.checkhq.com/resources/blog
- type: GitHubOrganization
  url: https://github.com/check-technologies
- type: SignUp
  url: https://sandbox.checkhq.com/
- type: TermsOfService
  url: https://www.checkhq.com/company/terms
- type: PrivacyPolicy
  url: https://www.checkhq.com/company/privacy
- type: Security
  url: https://www.checkhq.com/company/security
- type: Compliance
  url: https://www.checkhq.com/company/security
- type: Conformance
  url: conformance/check-technologies-conformance.yml
- type: VulnerabilityDisclosure
  url: security/check-technologies-vulnerability-disclosure.yml
- type: StatusPage
  url: https://status.checkhq.com
- type: ChangeLog
  url: changelog/check-technologies-changelog.yml
- type: Deprecation
  url: lifecycle/check-technologies-lifecycle.yml
- type: Lifecycle
  url: lifecycle/check-technologies-lifecycle.yml
- type: Webhooks
  url: asyncapi/check-technologies-webhooks.yml
- type: MCPServer
  url: mcp/check-technologies-mcp.yml
- type: CLI
  url: cli/check-technologies-cli.yml
- type: Components
  url: components/check-technologies-components.yml
- type: Sandbox
  url: sandbox/check-technologies-sandbox.yml
- type: Conventions
  url: conventions/check-technologies-conventions.yml
- type: Idempotency
  url: conventions/check-technologies-conventions.yml
- type: ErrorCatalog
  url: errors/check-technologies-error-codes.yml
- type: LLMsTxt
  url: llms/check-technologies-llms.txt
x-enrichment:
  date: '2026-07-19'
  status: backfilled
  pass: local-v1
  note: backfilled from .gitignore signal + verified work evidence

Check Technologies

Kin Score

APIs 1

Check Payroll API

MCP Servers 1

check-technologies-mcp.yml

Event Specifications 1

Check Technologies Webhooks

Security Posture 3

Check Technologies Authentication

Check Technologies Domain Security

Check Technologies Vulnerability Disclosure

Resources