> ## Documentation Index
> Fetch the complete documentation index at: https://docs.base39.com.br/llms.txt
> Use this file to discover all available pages before exploring further.

# Check Email for Sign-in



## OpenAPI

````yaml /api-reference/openapi.json post /v2/auth/check
openapi: 3.1.0
info:
  title: Base39 API
  description: Base39 API
  version: 1.0.0
  contact:
    name: Base39 Team
    url: https://base39.com.br
    email: suporte@base39.com.br
  termsOfService: https://base39.com.br/termos
  license:
    name: Proprietary
    url: https://base39.com.br/termos
servers:
  - url: https://api.base39.com.br
    description: Production
  - url: https://api.dev.base39.cloud
    description: Development
  - url: http://localhost:3000
    description: Local
security:
  - OAuth2: []
tags:
  - name: Search
  - name: Companies
  - name: Registration
  - name: Addresses
  - name: Relationships
  - name: Queries
  - name: Credit & Financial
  - name: Checks
  - name: Protests
  - name: Government Debt
  - name: Litigation & Bankruptcy
  - name: Compliance
  - name: Certificates
  - name: Restrictions
  - name: SCR
  - name: Reputation
  - name: Social Assistance
  - name: History
  - name: Graph
  - name: Files
  - name: Rules
  - name: Monitoring
  - name: Scorecards
  - name: Feature Store
  - name: Mentions
  - name: Views
  - name: Skills
  - name: Custom Tools
  - name: Connections
  - name: Connectors
  - name: OAuth Integrations
  - name: WhatsApp
  - name: Upstreams
  - name: Billing
  - name: Usage
  - name: Organizations
  - name: Members
  - name: Users
  - name: Authentication
  - name: API Keys
  - name: Notifications
  - name: Changelog
  - name: Webhooks
  - name: Vaults
  - name: Version
  - name: Context Schema
paths:
  /v2/auth/check:
    post:
      tags:
        - Authentication
      summary: Check Email for Sign-in
      operationId: auth_check_email
      parameters: []
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/FirstAccessCheckInput'
      responses:
        '200':
          description: Status do e-mail
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/FirstAccessOutput'
components:
  schemas:
    FirstAccessCheckInput:
      type: object
      properties:
        email:
          type: string
          example: user@base39.com.br
        microsoftTenantId:
          type: string
          example: 11111111-1111-1111-1111-111111111111
        document:
          type: string
          description: CNPJ used to disambiguate auto join for domains with multiple orgs
        authMethod:
          type: string
          enum:
            - email_password
            - email_otp
            - google
            - microsoft
            - passkey
            - saml
      required:
        - email
    FirstAccessOutput:
      type: object
      properties:
        scenario:
          type: string
          enum:
            - auto_joined
            - pending_approval
            - new_org
            - existing
        status:
          type: string
          enum:
            - active
            - waiting_approval
            - disabled
        orgId:
          type: string
          nullable: true
        orgName:
          type: string
          nullable: true
        allowedAuthMethods:
          type: array
          items:
            type: string
            enum:
              - email_password
              - email_otp
              - google
              - microsoft
              - passkey
              - saml
        requiresDocumentForAutoJoin:
          type: boolean
      required:
        - scenario
        - status
        - orgId
        - orgName
        - allowedAuthMethods
  securitySchemes:
    OAuth2:
      type: oauth2
      flows:
        authorizationCode:
          authorizationUrl: https://id.local.base39.cloud/oauth2/authorize
          tokenUrl: https://id.local.base39.cloud/oauth2/token
          scopes:
            profile: Read user profile
            email: Read user email
            openid: OpenID authentication
      description: OAuth2 Authorization Code flow

````