Snapchat OAuth API

openapi: 3.2.0
info:
  title: Snapchat Login Kit O Auth API
  description: Snapchat Login Kit enables developers to let users sign up and log in to their apps using their Snapchat account credentials. Built on the OAuth 2.0 standard, it provides endpoints for authorization, token exchange, token refresh, and retrieving user profile information including display name and Bitmoji avatar. Login Kit is available for iOS, Android, and Web platforms.
  version: '1.0'
  contact:
    name: Snap for Developers
    url: https://developers.snap.com
  termsOfService: https://snap.com/en-US/terms
servers:
- url: https://accounts.snapchat.com
  description: Snapchat Accounts Server (OAuth)
- url: https://kit.snapchat.com/v1
  description: Snapchat Kit API Server (Profile)
tags:
- name: OAuth
  description: OAuth 2.0 authorization and token management endpoints for authenticating users via their Snapchat account.
paths:
  /accounts/oauth2/auth:
    get:
      operationId: authorize
      summary: Authorize a User via Snapchat
      description: Redirects the user to the Snapchat authorization page where they can grant permission to the application. This is the initial step in the OAuth 2.0 authorization code flow. After authorization, the user is redirected back to the specified redirect URI with an authorization code.
      tags:
      - OAuth
      parameters:
      - name: client_id
        in: query
        required: true
        description: The OAuth client ID assigned to the application.
        schema:
          type: string
      - name: redirect_uri
        in: query
        required: true
        description: The URI to redirect the user to after authorization. Must match one of the registered redirect URIs.
        schema:
          type: string
          format: uri
      - name: response_type
        in: query
        required: true
        description: The OAuth response type. Use 'code' for authorization code flow or 'token' for implicit flow.
        schema:
          type: string
          enum:
          - code
          - token
      - name: scope
        in: query
        required: true
        description: Space-separated list of requested scopes defining what user data the application wants access to.
        schema:
          type: string
          examples:
          - https://auth.snapchat.com/oauth2/api/user.display_name https://auth.snapchat.com/oauth2/api/user.bitmoji.avatar
      - name: state
        in: query
        required: false
        description: An opaque value used to maintain state between the request and callback for CSRF protection.
        schema:
          type: string
      responses:
        '302':
          description: Redirects to Snapchat login page for user authorization
        '400':
          description: Bad request - invalid parameters
  /login/oauth2/access_token:
    post:
      operationId: exchangeToken
      summary: Exchange Authorization Code for Tokens
      description: Exchanges an authorization code for an access token and refresh token. Access tokens expire after 3600 seconds (60 minutes). This endpoint is also used to refresh expired access tokens using a refresh token.
      tags:
      - OAuth
      requestBody:
        required: true
        content:
          application/x-www-form-urlencoded:
            schema:
              type: object
              required:
              - client_id
              - client_secret
              - grant_type
              properties:
                grant_type:
                  type: string
                  description: The type of token exchange. Use 'authorization_code' for initial exchange or 'refresh_token' for renewal.
                  enum:
                  - authorization_code
                  - refresh_token
                client_id:
                  type: string
                  description: The OAuth client ID assigned to the application.
                client_secret:
                  type: string
                  description: The OAuth client secret assigned to the application.
                code:
                  type: string
                  description: The authorization code received from the authorization endpoint. Required when grant_type is authorization_code.
                redirect_uri:
                  type: string
                  format: uri
                  description: The redirect URI used in the authorization request. Required when grant_type is authorization_code.
                refresh_token:
                  type: string
                  description: The refresh token for obtaining a new access token. Required when grant_type is refresh_token.
      responses:
        '200':
          description: Token exchange successful
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/TokenResponse'
        '400':
          description: Bad request - invalid grant or parameters
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/OAuthError'
        '401':
          description: Unauthorized - invalid client credentials
components:
  schemas:
    TokenResponse:
      type: object
      description: The response from a successful token exchange or refresh request.
      properties:
        access_token:
          type: string
          description: The access token for authenticating API requests.
        token_type:
          type: string
          description: The type of token, always 'Bearer'.
          enum:
          - Bearer
        expires_in:
          type: integer
          description: The number of seconds until the access token expires. Typically 3600 (60 minutes).
          example: 3600
        refresh_token:
          type: string
          description: The refresh token for obtaining new access tokens after expiration.
        scope:
          type: string
          description: The scopes granted by the user during authorization.
    OAuthError:
      type: object
      description: Error response from the OAuth token endpoint.
      properties:
        error:
          type: string
          description: The error code.
          enum:
          - invalid_request
          - invalid_client
          - invalid_grant
          - unauthorized_client
          - unsupported_grant_type
        error_description:
          type: string
          description: A human-readable description of the error.
  securitySchemes:
    bearerAuth:
      type: http
      scheme: bearer
      description: Bearer access token obtained via the OAuth 2.0 authorization code flow. Tokens expire after 3600 seconds.
externalDocs:
  description: Snapchat Login Kit Documentation
  url: https://developers.snap.com/snap-kit/login-kit/overview