diff --git a/main.go b/main.go
index 283abf0..f9fdcc5 100644
--- a/main.go
+++ b/main.go
@@ -4,6 +4,7 @@ import (
 	"bytes"
 	"crypto/tls"
 	"crypto/x509"
+	"encoding/json"
 	"flag"
 	"fmt"
 	"io"
@@ -16,12 +17,17 @@ import (
 	"gitlab-app.eng.qops.net/golang/jwt"
 )
 
+type LagReader struct {
+	lag time.Duration
+	src io.Reader
+}
+
 func main() {
 	var bodyRepeat int
 	var path, host, method, body, headers, brandID, issuer string
 	var ca, cert, key, secret string
-	var needJWT, verbose bool
-	var timeout time.Duration
+	var needJWT, verbose, jsonPP bool
+	var timeout, lag time.Duration
 	flag.StringVar(&method, "method", "get", "method for request")
 	flag.StringVar(&path, "path", "fieldsetdefinitions/v1/index/surveys/SV_031sm3MMOPSa8Tz/fieldsets?assumeHasPermission=true", "path for request")
 	flag.StringVar(&host, "host", "data-platform.service.b1-prv.consul:8080", "host and port for request")
@@ -31,8 +37,10 @@ func main() {
 	flag.StringVar(&headers, "headers", "", "headers as k=v,k=v for request")
 	flag.StringVar(&issuer, "issuer", "dataprocessing,responseengine,fieldset-definitions,qualtrics,objectstore,svs,monolith,ex,blixt,null,responseengine", "issuer for jwt")
 	flag.BoolVar(&needJWT, "jwt", true, "need jwt boolean")
+	flag.BoolVar(&jsonPP, "jpp", true, "try json pretty print")
 	flag.BoolVar(&verbose, "v", false, "is verbose")
 	flag.DurationVar(&timeout, "t", time.Second*10, "request timeout")
+	flag.DurationVar(&lag, "lag", time.Second*0, "writing request lag after connecting")
 	flag.StringVar(&ca, "ca", "", "ca for server")
 	flag.StringVar(&cert, "cert", "", "cert for client")
 	flag.StringVar(&key, "key", "", "key for client")
@@ -50,6 +58,7 @@ func main() {
 	} else {
 		reqBody = os.Stdin
 	}
+	reqBody = NewLagReader(lag, reqBody)
 	req, err := http.NewRequest(
 		strings.ToUpper(method),
 		host+"/"+strings.Trim(path, "/"),
@@ -58,6 +67,7 @@ func main() {
 	if err != nil {
 		panic(err)
 	}
+	req.Header.Add("Content-Type", "application/json")
 	if len(headers) > 0 {
 		for _, pair := range strings.Split(headers, ",") {
 			kv := strings.Split(pair, "=")
@@ -84,6 +94,14 @@ func main() {
 	defer resp.Body.Close()
 
 	fmt.Fprintf(os.Stderr, "(%d) ", resp.StatusCode)
+	if jsonPP {
+		var v interface{}
+		if err := json.Unmarshal(b, &v); err == nil {
+			if c, err := json.MarshalIndent(v, "", "   "); err == nil {
+				b = c
+			}
+		}
+	}
 	fmt.Printf("%s\n", bytes.TrimSpace(b))
 }
 
@@ -135,3 +153,18 @@ func setJWT(r *http.Request, brandID string, issuer string, secret string) {
 		panic(err)
 	}
 }
+
+func NewLagReader(lag time.Duration, src io.Reader) *LagReader {
+	return &LagReader{
+		lag: lag,
+		src: src,
+	}
+}
+
+func (lr *LagReader) Read(p []byte) (n int, err error) {
+	if lr.lag > 0 {
+		<-time.After(lr.lag)
+		lr.lag = 0
+	}
+	return lr.src.Read(p)
+}