diff --git a/crates/api-grub/src/jitter.rs b/crates/api-grub/src/jitter.rs
new file mode 100644
index 0000000..7c022ca
--- /dev/null
+++ b/crates/api-grub/src/jitter.rs
@@ -0,0 +1,168 @@
+use std::collections::{HashMap, HashSet};
+use reqwest::Client;
+use lazy_static::lazy_static;
+use tracing::{info, error};
+use serde_json::{Value, from_str};
+
+
+lazy_static! {
+    static ref CONFERENCES_ENDPOINT: String = String::from("/api/v1/conferences");
+    static ref USERS_ENDPOINT: String = String::from("/api/v1/participants/");
+}
+
+// conferences ids 
+type Conferences = HashSet<String>;
+// hash map {CONFERENCE_ID - JITTER_VALUE} 
+type OutputConferences = HashMap<String, u32>;
+// hash map {PARTICIPANT_ID - {CONFERENCE_ID - JITTER_VALUE}}
+type Output = HashMap<String, OutputConferences>;
+
+// to handle async http requests
+#[derive(Debug)] 
+struct Requester {
+    base: String, 
+    api_key: String,
+    client: Client,
+}
+
+impl Requester {
+    pub fn new() -> anyhow::Result<Self>  {
+        Ok(Self {
+            base: String::from("https://demo.vcs.vinteo.dev"), 
+            api_key: std::env::var("VINTEO_API_KEY").unwrap(),
+            client: Client::builder().user_agent("api-grub").build()?,
+        })
+    }
+    pub async fn get_conferences(&self) -> anyhow::Result<Value> {
+        let url = format!("{}{}", self.base, *CONFERENCES_ENDPOINT);
+        let req = self.client.get(url)
+        .header("accept", "application/json")
+        .header("x-api-key", &self.api_key);
+        let resp = req.send().await;
+        Ok(from_str(&resp?.text().await?)?)
+    }
+    pub async fn get_conferences_from_value(mut conferences: Value) -> anyhow::Result<Conferences> {
+        let mut hashset = Conferences::new();
+        match conferences.get("data") {
+            None => return Err(anyhow::Error::msg("Invalid JSON format: no `data` field")),
+            Some(data) => {
+                match data.get("conferences") {
+                    None => return Err(anyhow::Error::msg("Invalid JSON format: no `conferences` field")),
+                    Some(confs) => {
+                        if let Some(confs) = confs.as_array() {
+                            confs.iter()
+                            .for_each(|conf_obj| {
+                                if let Some(id) = conf_obj.get("number") {
+                                    if let Some(id) = id.as_str() {
+                                        hashset.insert(id.to_string());
+                                    }
+                                }
+                            });
+                        } else {
+                            return Err(anyhow::Error::msg("Invalid JSON format: `conferences` is not an array"))
+                        }
+                    },
+                }
+            },
+        }
+        Ok(hashset)
+    }
+    pub async fn get_users_jitter_by_conference(&self, conferences : Conferences) -> anyhow::Result<Output> {
+        let mut output = Output::new();
+        for conf in conferences {
+            let url = format!("{}{}{}", self.base, *USERS_ENDPOINT, &conf);
+            let req = self.client.get(url)
+            .header("accept", "application/json")
+            .header("x-api-key", &self.api_key);
+            
+            match req.send().await {
+                Err(er) => error!("Cannot GET data about conference - {}: {}", conf, er),
+                Ok(resp) => {
+                    match resp.text().await {
+                        Err(er) => error!("Cannot convert response into text: {}", er),
+                        Ok(resp) => {
+                            let resp: Value = from_str(&resp)?;
+                            if let Some(data) = resp.get("data") {
+                                if let Some(parts) = data.get("participants") {
+                                    if let Some(parts) = parts.as_array() {
+                                        for participant in parts {
+                                            // save id 
+                                            let id = {
+                                                if let Some(id) = participant.get("id") {
+                                                    serde_json::to_string(id)?.replace("\"", "")
+                                                } else {
+                                                    error!("No `id` field was found in participant from {} conference. Skipping ...", &conf);
+                                                    continue;
+                                                }
+                                            };
+                                            if let Some(params) = participant.get("params") {
+                                                let jitter = {
+                                                    if let Some(jitter) = params.get("jBLen") {
+                                                        // find substring
+                                                        dbg!(&jitter);
+                                                        let temp = serde_json::to_string(jitter)?.replace(" ms", "").replace("\"", "");
+                                                        // string to u32 
+                                                        dbg!(&temp);
+                                                        if let Ok(jitter) = temp.parse::<u32>() {
+                                                            jitter
+                                                        } else {
+                                                            error!("Invalid type of `jBLen` field for participant {} in conference {}. Skipping ...", &id, &conf);
+                                                            continue;
+                                                        }
+
+                                                    } else {
+                                                        error!("No `jBLen` field was found in participant {} from conference {}. Skipping ...", &id, &conf);
+                                                        continue;
+                                                    }
+                                                };
+                                                // hm push
+                                                output.entry(id)
+                                                .and_modify(|map| { 
+                                                    map.entry(conf.clone())
+                                                    .and_modify(|val| *val = jitter)
+                                                    .or_insert(jitter); } )
+                                                .or_insert( { 
+                                                    let mut hm = OutputConferences::new();
+                                                    hm.insert(conf.clone(), jitter);
+                                                    hm
+                                                } );
+                                            } else {
+                                                error!("No `params` field in participant {} from conference {}. Skipping ...", &id, &conf);
+                                            }
+                                        }
+                                    }
+                                    else {
+                                        return Err(anyhow::Error::msg("Invalid JSON format: `participants` is not an array"))
+                                    }
+                                } else {
+                                    return Err(anyhow::Error::msg("Invalid JSON format: no `participants` field"))
+                                }
+                            } else {
+                                return Err(anyhow::Error::msg("Invalid JSON format: no `data` field"))
+                            }
+                        } 
+                    }
+                },
+            }
+        }
+        Ok(output)
+    }
+}
+
+pub async fn init_grubbing_jitter() -> anyhow::Result<()> {
+    // create requester 
+    let requester = Requester::new()?;
+    // get conference id's
+    loop {
+        let conferences =  requester.get_conferences().await?;
+        let conferences = Requester::get_conferences_from_value(conferences).await?;
+        // conferences.iter()
+        // .for_each(|id| {
+        //     requester.get_users_jitter_by_conference(conference_id)
+        // });
+        let jitter = requester.get_users_jitter_by_conference(conferences).await?;
+        dbg!(jitter);
+        tokio::time::sleep(tokio::time::Duration::from_secs(5)).await;
+    }
+    // get users' jitter info   
+} 
\ No newline at end of file
diff --git a/crates/api-grub/src/main.rs b/crates/api-grub/src/main.rs
index 34e2a9e..bbb05d0 100644
--- a/crates/api-grub/src/main.rs
+++ b/crates/api-grub/src/main.rs
@@ -4,6 +4,7 @@ mod logger;
 mod json;
 mod export;
 mod monitoring;
+mod jitter;
 
 use anyhow::Result;
 use integr_structs::api::v3::Config;
@@ -12,7 +13,10 @@ use config::{pull_local_config, init_config_grub_mechanism};
 use net::init_api_grub_mechanism;
 use tokio::sync::mpsc;
 use tracing::{error, info, warn};
+// ENODE_MONITORING_IP
 use monitoring::get_metrics_from_monitoring;
+// VINTEO_API_KEY
+use jitter::init_grubbing_jitter;
 
 #[tokio::main(flavor = "multi_thread")]
 async fn main() -> Result<()>{
@@ -33,23 +37,23 @@ async fn main() -> Result<()>{
         }
     });
     let event_grub = tokio::spawn(async move {
+        // GRAB USING eNODE.MONITORING API GATEWAY
         if std::env::var("ENODE_MONITORING_IP").is_ok() {
             match get_metrics_from_monitoring(0, 5).await {
-                Ok(_) => {
-                    info!("Grabing (eNODE.Monitoring) task deinitialized");
-                },
-                Err(er) => {
-                    error!("Grabing task returned an error : {}", er);
-                },
+                Ok(_) => info!("Grabing (eNODE.Monitoring) task de-initialized"),
+                Err(er) => error!("Grabing task returned an error : {}", er),
             }
+        // JITTER NATIVE GRAB TASK
+        } else if std::env::var("VINTEO_API_KEY").is_ok() {
+            match init_grubbing_jitter().await { 
+                Ok(_) => info!("Grabing (Vinteo - Jitter native) task de-initialized"),
+                Err(er) => error!("Jitter grabing mechanism crushed : {}", er),
+            }
+        // NATIVE GRAB TASK USING `config_api.json`
         } else {
             match init_api_grub_mechanism(config, &mut rx).await {
-                Ok(_) => {
-                    info!("Grabing task deinitialized");
-                },
-                Err(er) => {
-                    error!("Grabing task returned an error : {}", er);
-                },
+                Ok(_) => info!("Grabing task de-initialized"),
+                Err(er) => error!("Grabing task returned an error : {}", er),
             }
         }
     });