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

# Preload user data from facebook in order to let them check/change their email address before signup



## OpenAPI

````yaml https://api.boosterberg.com-beta.com/v1/doc/api-json post /user/pre-signup-fb
openapi: 3.0.0
info:
  title: Boosterberg API
  description: REST API For Boosterberg user-facing application
  contact:
    name: Miloslav Kona
    email: mkona@bykd.com
  version: '1.0'
servers:
  - url: https://api.boosterberg.com-beta.com/v1
    description: dev server
  - url: https://auto.boost.api/v1
    description: local
  - url: https://api.boosterberg.com/v1
    description: production
security: []
tags:
  - name: Posts
    description: Post lifecycle and evaluation data across all campaigns
paths:
  /user/pre-signup-fb:
    post:
      summary: >-
        Preload user data from facebook in order to let them check/change their
        email address before signup
      operationId: 7d95b58414266d8d80d849a1861c5aca
      requestBody:
        description: ''
        content:
          application/json:
            schema:
              required:
                - access-token
              properties:
                access-token:
                  type: string
              type: object
      responses:
        '200':
          description: Returns Email
      security: []

````