diff --git a/checker.py b/checker.py
new file mode 100644
index 0000000..19a5275
--- /dev/null
+++ b/checker.py
@@ -0,0 +1,193 @@
+# flake8: noqa
+# pylint: disable=broad-exception-raised, raise-missing-from, too-many-arguments, redefined-outer-name
+# pylance: disable=reportMissingImports, reportMissingModuleSource, reportGeneralTypeIssues
+# type: ignore
+
+import re
+from datetime import datetime, timedelta, timezone
+import subprocess
+import os
+import time
+import random
+import sys
+import pkg_resources
+import requests
+import json
+from collections import deque
+required_packages = ['grist-api', 'colorama']
+installed_packages = [pkg.key for pkg in pkg_resources.working_set]
+
+for package in required_packages:
+    if package not in installed_packages:
+        subprocess.check_call([sys.executable, '-m', 'pip', 'install', package, '--break-system-packages'])
+
+from grist_api import GristDocAPI
+import colorama
+
+import logging
+import socket
+
+def self_update():
+    script_path = os.path.abspath(__file__)
+    update_url = "https://gitea.vvzvlad.xyz/vvzvlad/ritual/raw/branch/main-22aug/checker.py"
+    try:
+        response = requests.get(update_url, timeout=10)
+        if response.status_code == 200:
+            current_content = ""
+            with open(script_path, 'r', encoding='utf-8') as f:
+                current_content = f.read()
+            
+            if current_content != response.text:
+                with open(script_path, 'w', encoding='utf-8') as f:
+                    f.write(response.text)
+                logging.info("Script updated successfully, restarting")
+                os.execv(sys.executable, ['python3'] + sys.argv)
+            else:
+                logging.info("Script is up to date")
+        else:
+            logging.error(f"Failed to download update, status code: {response.status_code}")
+    except Exception as e:
+        logging.error(f"Update error: {str(e)}")
+
+class GRIST:
+    def __init__(self, server, doc_id, api_key, logger):
+        self.server = server
+        self.doc_id = doc_id
+        self.api_key = api_key
+        self.logger = logger
+        self.grist = GristDocAPI(doc_id, server=server, api_key=api_key)
+
+    def table_name_convert(self, table_name):
+        return table_name.replace(" ", "_")
+
+    def to_timestamp(self, dtime: datetime) -> int:
+        if dtime.tzinfo is None:
+            dtime = dtime.replace(tzinfo=timezone(timedelta(hours=3))) 
+        return int(dtime.timestamp())
+
+    def insert_row(self, data, table):
+        data = {key.replace(" ", "_"): value for key, value in data.items()}
+        row_id = self.grist.add_records(self.table_name_convert(table), [data])
+        return row_id
+
+    def update_column(self, row_id, column_name, value, table):
+        if isinstance(value, datetime):
+            value = self.to_timestamp(value)
+        column_name = column_name.replace(" ", "_")
+        self.grist.update_records(self.table_name_convert(table), [{ "id": row_id, column_name: value }])
+
+    def delete_row(self, row_id, table):
+        self.grist.delete_records(self.table_name_convert(table), [row_id])
+
+    def update(self, row_id, updates, table):
+        for column_name, value in updates.items():
+            if isinstance(value, datetime):
+                updates[column_name] = self.to_timestamp(value)
+        updates = {column_name.replace(" ", "_"): value for column_name, value in updates.items()}
+        self.grist.update_records(self.table_name_convert(table), [{"id": row_id, **updates}])
+
+    def fetch_table(self, table):
+        return self.grist.fetch_table(self.table_name_convert(table))
+
+    def find_record(self, id=None, state=None, name=None, table=None):
+        if table is None:
+            raise ValueError("Table is not specified")
+        table_data = self.grist.fetch_table(self.table_name_convert(table))
+        if id is not None:
+            record = [row for row in table_data if row.id == id]
+            return record
+        if state is not None and name is not None:
+            record = [row for row in table_data if row.State == state and row.name == name]
+            return record
+        if state is not None:
+            record = [row for row in table_data if row.State == state]
+            return record
+        if name is not None:
+            record = [row for row in table_data if row.Name == name]
+            return record
+
+    def find_settings(self, key, table):
+        table = self.fetch_table(self.table_name_convert(table))
+        for record in table:
+            if record.Setting == key:
+                if record.Value is None or record.Value == "":
+                    raise ValueError(f"Setting {key} blank")
+                return record.Value
+        raise ValueError(f"Setting {key} not found")
+
+
+def check_logs(log_handler):
+    error_count = 0
+    proved_count = 0
+    proof_speeds = deque(maxlen=100)
+    
+    try:
+        logs = subprocess.run(['docker', 'compose', 'logs', '--since', '2h'], cwd='/root/node/', capture_output=True, text=True, check=True)
+        log_content = logs.stdout
+    except subprocess.CalledProcessError as e:
+        raise RuntimeError(f"Error running docker compose logs: {e}") from e
+    
+    for line in log_content.split('\n'):
+        if "error" in line.lower():
+            log_handler.error(f"Error: {line}")
+            error_count += 1
+        if "Proved step" in line:
+            proved_count += 1
+            log_handler.info(f"Proved step: {line}")
+
+        proof_speed_match = re.search(r'Proved step \d+ at (\d+\.\d+) proof cycles/sec', line)
+        if proof_speed_match:
+            current_speed = float(proof_speed_match.group(1))
+            proof_speeds.append(current_speed)
+            log_handler.info(f"Current proof speed: {current_speed} proof cycles/sec")
+
+    # Calculate average proof speed from the collected values
+    avg_proof_speed = sum(proof_speeds) / len(proof_speeds) if proof_speeds else 0
+    log_handler.info(f"Average proof speed (last {len(proof_speeds)} values): {avg_proof_speed:.2f} proof cycles/sec")
+    
+    data = {
+        "errors": error_count,
+        "proved_steps": proved_count/10, 
+        "proof_speed": int(avg_proof_speed)
+    }
+    log_handler.info(f"Result: {data}")
+    return data
+
+if __name__ == "__main__":
+    colorama.init(autoreset=True)
+    logger = logging.getLogger("Checker")
+    logger.setLevel(logging.INFO)
+    formatter = logging.Formatter("%(asctime)s - %(name)s - %(levelname)s - %(message)s")
+    ch = logging.StreamHandler()
+    ch.setFormatter(formatter)
+    logger.addHandler(ch)
+
+    logger.info("Checker started")
+    self_update()
+    random_sleep = random.randint(1, 600)
+    logger.info(f"Sleeping for {random_sleep} seconds")
+    time.sleep(random_sleep)
+
+    grist_data = {}
+    with open('/root/node/grist.json', 'r', encoding='utf-8') as f:
+        grist_data = json.loads(f.read())
+
+    GRIST_ROW_NAME = socket.gethostname()
+    NODES_TABLE = "Nodes"
+    grist = GRIST(grist_data.get('grist_server'), grist_data.get('grist_doc_id'), grist_data.get('grist_api_key'), logger)
+    current_vm = grist.find_record(name=GRIST_ROW_NAME, table=NODES_TABLE)[0]
+    def grist_callback(msg): grist.update(current_vm.id, msg, NODES_TABLE)
+
+    for attempt in range(3):
+        try:        
+            result = check_logs(logger)
+            data = f"{result['proved_steps']}/{result['proof_speed']}/{result['errors']}" # proved/proof_speed/Errors
+            grist_callback({ "Health": data })
+            print(result)
+            break
+        except Exception as e:  
+            logger.error(f"Error on attempt {attempt+1}/3: {e}")
+            if attempt == 2:
+                grist_callback({ "Health": f"Error: {e}" })
+            if attempt < 2:
+                time.sleep(5)
\ No newline at end of file
diff --git a/playbook.yml b/playbook.yml
index 40baddf..1bc36ae 100644
--- a/playbook.yml
+++ b/playbook.yml
@@ -264,5 +264,32 @@
 #        docker update --restart unless-stopped infernet-anvil
 #        docker update --restart unless-stopped deploy-fluentbit-1
 
+    - name: Copy checker service file
+      ansible.builtin.copy:
+        dest: /etc/systemd/system/node-checker.service
+        content: |
+          [Unit]
+          Description=Node Checker Service
+          After=network.target
+
+          [Service]
+          Type=simple
+          User=root
+          WorkingDirectory={{ ansible_env.HOME }}/node
+          ExecStart=/usr/bin/python3 {{ ansible_env.HOME }}/node/checker.py
+          Restart=always
+          RestartSec=1800
+
+          [Install]
+          WantedBy=multi-user.target
+        mode: '0644'
+
+    - name: Enable and start node-checker service
+      ansible.builtin.systemd:
+        name: node-checker
+        enabled: yes
+        state: started
+        daemon_reload: yes
+
     - name: Remove docker login credentials
       ansible.builtin.shell: rm -rf /root/.docker/config.json