API IN POWER BI POST

Hi viniciuscastilh 

Does that cURL POST work?

The general form for making a POST in PBI/PQ is

Source = Json.Document(Web.Contents(url,[
Headers = [#"Content-Type"="application/json"],
Content = Text.ToBinary(body)
]
))

In your particular case try this

let
    api_url = "https://api.mercadolibre.com/",
    token_path = "oauth/token",
    ClientID = "xxxxxxxx",
    ClientSecret = "xxxxxxxx",
    
    EncodedCredentials = "Basic " & Binary.ToText(Text.ToBinary(ClientID & ":" & ClientSecret), BinaryEncoding.Base64),
    
    Token_Response  = Json.Document(Web.Contents(api_url,
    [ 
      RelativePath = token_path,
      Headers = [#"Content-Type"="application/x-www-form-urlencoded",#"Authorization"=EncodedCredentials],
      Content=Text.ToBinary("grant_type=authorization_code")
    ]
    )
    )
in
    Token_Response

Regards

Phil