curl -G \ 
--data-urlencode "subject=john" \ 
--data-urlencode "relation=access" \ 
--data-urlencode "namespace=files" \ 
--data-urlencode "object=file_a" \ 
http://keto-read-api/checkimport ...

const checkClient = new checkService.CheckServiceClient('keto-read-api')

const checkRequest = new checkData.CheckRequest()
checkRequest.setNamespace('files')
checkRequest.setObject('file_a')
checkRequest.setRelation('access')

const sub = new acl.Subject()
sub.setId('john')
checkRequest.setSubject(sub)

checkClient.check(checkRequest, (error, resp) => {
if (error) {
console.log('Encountered error:', error)
} else {
console.log(resp.getAllowed() ? 'Allowed' : 'Denied')
}
})package main

import (...)

func main() {
conn, err := grpc.Dial("keto-read-api")
if err != nil {
panic(err.Error())
}

client := acl.NewCheckServiceClient(conn)

res, err := client.Check(context.Background(),
&acl.CheckRequest{
Namespace: "files",
Object:    "file_a",
Relation:  "access",
Subject: &acl.Subject{Ref: &acl.Subject_Id{
Id: "john",
}},
},
})
if err != nil {
panic(err.Error())
}


if res.Allowed {
fmt.Println("Allowed")
return
}
fmt.Println("Denied")
}