HowTo: Authenticate to Mercado Libre using GAM

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This article explains how to authenticate your users with Mercado Libre using GeneXus Access Manager (GAM).

1. Enter to the GAM's Backend and go to the Authentication Types section. Create a new OAuth 2.0 Authentication Type and define basic information in the General section: Name, Description, Images (optional), etc.

2. In the Configuration section you need to define the following for the General, Authorization, Token and User Information tab:


Client ID:     client_id      Value: <clientid>
Client Secret: client_secret  Value: <clientsecret>
Redirect URL:  redirect_uri   Value: https://<server>/webapp


Response type:  response_type    Value: code
Scope:          scope            Value: read
State:          state
Include ClientID and RedirectURL
Access code TAG: code
Error description TAG: error_description


Header Cotent type: Content-type    Value: application/x-www-form-urlencoded
Grant type:         grant_type      Value: authorization_code
Include All
Access token TAG: access_token
Token type TAG: token_type
Expires in TAG: expires_in
User Id TAG: user_id
Refresh Token TAG: refresh_token
Error description TAG: error_description
Validate external token = True
Refresh token URL = leave it empty 

User Information

Method: Get
Header Content type: Content-type     Value: application/json;charset=utf-8
Include Acces Token: access_token
Email TAG: email
External ID TAG: id
Name TAG:  nickname
First name TAG: first_name
Last name TAG: last_name
URL profile TAG: permalink
Error description TAG: error_description


As of GeneXus 15 Upgrade 11.

See Also

GAM - OAuth 2.0 Authentication Type