Tip: Rather than "System.Text.Encoding.Default.GetString(request)", use oS.GetRequestBodyAsString() .

public static BindUIColumn("GraphQL Operation", 61)
function BindGQLSessionId(oS: Session): String {
if (os.HTTPMethodIs("POST") && oS.url.Contains("/graphql")) {
   return oS.GetRequestBodyAsString.Split(",")[0].Split(":")[1].Trim('"')
}

return String.Empty;
}

Here's a hack I wrote that you can put in your fiddlerscript:

public static BindUIColumn("GraphQL Operation", 61)
function BindSessionId(oS: Session): String {
if (oS.url.Contains("/graphql"))

{
var request = oS.RequestBody

return System.Text.Encoding.Default.GetString(request).Split(",")[0].Split(":")[1].Trim('"')
}
else
{
return ""
}
}

This only works for my particular instance where the url and content is predictable, but it could be adapted by anyone who wants.

It could also be nice to be able to display the operationName value in the list view so you could easily find particular calls without having to inspect each one.

I believe Ekaterina is referencing the ability to view the body payload properly. For example, the raw body of this request is: 

{"operationName":"GetCurrentUserTenantMember","variables":{},"query":"query GetCurrentUserTenantMember {\n  me {\n    ...TenantMember\n    tenant {\n      ...Tenant\n      __typename\n    }\n    __typename\n  }\n}\n\nfragment TenantMember on TenantMember {\n  id\n  firstName\n  lastName\n  emailAddress\n  lastSeenOn\n  role\n  __typename\n}\n\nfragment Tenant on Tenant {\n  id\n  displayName\n  __typename\n}\n"}

Which you can view in the JSON inspector, but it isn't the best because the query is not displayed "properly"... 

 

Hope this is what they're looking for, because it would be nice to have for me.

Can you elaborate on what specifically you mean here? Are you trying to see traffic generated by GraphQL in your browser? Something else? Are you trying to generate traffic using GraphQL inside Fiddler?