Strip HTML tags from Field Collections in Services Views
You have to tell use what you have done so far.

To strip tags use strip_tags php code. This function takes two parameters:

string strip_tags ( string $str , [string $allowable_tags ] )


The first argument is the string and the optional second parameter is to specify tags which should not be stripped. For example

&lt;?php
    echo strip_tags("Hello &lt;b&gt;&lt;i&gt;world!&lt;/i&gt;&lt;/b&gt;","&lt;b&gt;");
?&gt;


Will output this


  Hello world! 


Not


  Hello world!




I guess you have to use views_datasource module to generate JSON. I have already used this module and no default HTML tag were inserted by the View.

Did you try preprocess functions to strip the tags from the view?