openapi: 3.1.0
info:
  title: Check API (authentication only)
  version: "0"
  description: "Authentication only. This document describes how to authenticate with the Check API: its host and a bearer token. It lists no endpoints. Check publishes no OpenAPI specification; every value here comes from the vendor's own documentation, cited per value in x-sources. Checked 2026-11-02: /companies refuses a request without credentials (HTTP 403)."
x-auth-only: true
x-checked-endpoint: /companies
x-sources:
  server: https://docs.checkhq.com/reference/getting-started-1
  auth: https://docs.checkhq.com/reference/authentication
servers:
  - url: https://api.checkhq.com
paths: {}
components:
  securitySchemes:
    bearer:
      type: http
      scheme: bearer
      description: "Contact Check for a sandbox key; live key only after Check verifies the integration (sandbox: https://sandbox.checkhq.com)"
security:
  - bearer: []