diff --git a/src/utils/telemetry/__init__.py b/src/utils/telemetry/__init__.py
new file mode 100644
index 00000000..34e11185
--- /dev/null
+++ b/src/utils/telemetry/__init__.py
@@ -0,0 +1,8 @@
+"""Telemetry module for OpenRAG backend."""
+
+from .client import TelemetryClient
+from .category import Category
+from .message_id import MessageId
+
+__all__ = ["TelemetryClient", "Category", "MessageId"]
+
diff --git a/src/utils/telemetry/category.py b/src/utils/telemetry/category.py
new file mode 100644
index 00000000..17f9216c
--- /dev/null
+++ b/src/utils/telemetry/category.py
@@ -0,0 +1,45 @@
+"""Telemetry categories for OpenRAG backend."""
+
+
+class Category:
+    """Telemetry event categories."""
+    
+    # Application lifecycle
+    APPLICATION_STARTUP = "APPLICATION_STARTUP"
+    APPLICATION_SHUTDOWN = "APPLICATION_SHUTDOWN"
+    
+    # Service initialization
+    SERVICE_INITIALIZATION = "SERVICE_INITIALIZATION"
+    
+    # OpenSearch operations
+    OPENSEARCH_SETUP = "OPENSEARCH_SETUP"
+    OPENSEARCH_INDEX = "OPENSEARCH_INDEX"
+    
+    # Document operations
+    DOCUMENT_INGESTION = "DOCUMENT_INGESTION"
+    DOCUMENT_PROCESSING = "DOCUMENT_PROCESSING"
+    
+    # Authentication
+    AUTHENTICATION = "AUTHENTICATION"
+    
+    # Connector operations
+    CONNECTOR_OPERATIONS = "CONNECTOR_OPERATIONS"
+    
+    # Flow operations
+    FLOW_OPERATIONS = "FLOW_OPERATIONS"
+    
+    # Task operations
+    TASK_OPERATIONS = "TASK_OPERATIONS"
+    
+    # Chat operations
+    CHAT_OPERATIONS = "CHAT_OPERATIONS"
+    
+    # Error conditions
+    ERROR_CONDITIONS = "ERROR_CONDITIONS"
+    
+    # Settings operations
+    SETTINGS_OPERATIONS = "SETTINGS_OPERATIONS"
+    
+    # Onboarding
+    ONBOARDING = "ONBOARDING"
+
diff --git a/src/utils/telemetry/client.py b/src/utils/telemetry/client.py
new file mode 100644
index 00000000..7c29b424
--- /dev/null
+++ b/src/utils/telemetry/client.py
@@ -0,0 +1,335 @@
+"""Telemetry client for OpenRAG backend using Scarf."""
+
+import asyncio
+import os
+import platform
+from datetime import datetime, timezone
+from typing import Optional
+from urllib.parse import urlencode
+
+import httpx
+from utils.logging_config import get_logger
+
+logger = get_logger(__name__)
+
+# Constants
+SCARF_BASE_URL_DEFAULT = "https://langflow.gateway.scarf.sh"
+SCARF_PATH = "openrag"
+CLIENT_TYPE = "backend"
+PLATFORM_TYPE = "backend"
+
+
+def _get_openrag_version() -> str:
+    """Get OpenRAG version from package metadata."""
+    try:
+        from importlib.metadata import version, PackageNotFoundError
+        
+        try:
+            return version("openrag")
+        except PackageNotFoundError:
+            # Fallback: try to read from pyproject.toml if package not installed (dev mode)
+            try:
+                import tomllib
+                from pathlib import Path
+                
+                # Try to find pyproject.toml relative to this file
+                current_file = Path(__file__)
+                project_root = current_file.parent.parent.parent.parent
+                pyproject_path = project_root / "pyproject.toml"
+                
+                if pyproject_path.exists():
+                    with open(pyproject_path, "rb") as f:
+                        data = tomllib.load(f)
+                        return data.get("project", {}).get("version", "dev")
+            except Exception:
+                pass
+            
+            return "dev"
+    except Exception as e:
+        logger.warning(f"Failed to get OpenRAG version: {e}")
+        return "unknown"
+
+
+# Get version dynamically
+OPENRAG_VERSION = _get_openrag_version()
+
+# HTTP timeouts
+HTTP_REQUEST_TIMEOUT = 10.0
+HTTP_CONNECT_TIMEOUT = 5.0
+
+# Retry configuration
+RETRY_BASE_MS = 250
+MAX_WAIT_INTERVAL_MS = 5000
+MAX_RETRIES = 3
+
+# Global HTTP client
+_http_client: Optional[httpx.AsyncClient] = None
+_base_url_override: Optional[str] = None
+
+
+def _get_http_client() -> Optional[httpx.AsyncClient]:
+    """Get or create the HTTP client for telemetry."""
+    global _http_client
+    if _http_client is None:
+        try:
+            _http_client = httpx.AsyncClient(
+                timeout=httpx.Timeout(
+                    connect=HTTP_CONNECT_TIMEOUT,
+                    read=HTTP_REQUEST_TIMEOUT,
+                ),
+                headers={
+                    "User-Agent": f"OpenRAG-Backend/{OPENRAG_VERSION}",
+                },
+            )
+            logger.debug("Telemetry HTTP client initialized")
+        except Exception as e:
+            logger.error(f"Failed to initialize telemetry HTTP client: {e}")
+            return None
+    return _http_client
+
+
+def set_base_url(url: str) -> None:
+    """Override the default Scarf base URL (for testing)."""
+    global _base_url_override
+    _base_url_override = url
+    logger.info(f"Telemetry base URL overridden: {url}")
+
+
+def _get_effective_base_url() -> str:
+    """Get the effective base URL (override or default)."""
+    return _base_url_override or SCARF_BASE_URL_DEFAULT
+
+
+def is_do_not_track() -> bool:
+    """Check if DO_NOT_TRACK environment variable is set."""
+    do_not_track = os.environ.get("DO_NOT_TRACK", "").lower()
+    return do_not_track in ("true", "1", "yes", "on")
+
+
+def _get_os() -> str:
+    """Get the operating system identifier."""
+    system = platform.system().lower()
+    if system == "darwin":
+        return "macos"
+    elif system == "windows":
+        return "windows"
+    elif system == "linux":
+        return "linux"
+    else:
+        return "unknown"
+
+
+def _get_current_utc() -> str:
+    """Get current UTC time as RFC 3339 formatted string."""
+    now = datetime.now(timezone.utc)
+    return now.isoformat().replace("+00:00", "Z")
+
+
+def _get_exponential_backoff_delay(attempt: int) -> float:
+    """Calculate exponential backoff delay with full jitter (in seconds).
+    
+    Formula:
+    temp = min(MAX_BACKOFF, base * 2^attempt)
+    sleep = random_between(0, temp)
+    """
+    import random
+    
+    exp = min(2 ** attempt, MAX_WAIT_INTERVAL_MS // RETRY_BASE_MS)
+    temp_ms = RETRY_BASE_MS * exp
+    temp_ms = min(temp_ms, MAX_WAIT_INTERVAL_MS)
+    
+    # Full jitter: random duration between 0 and temp_ms
+    sleep_ms = random.uniform(0, temp_ms) if temp_ms > 0 else 0
+    return sleep_ms / 1000.0  # Convert to seconds
+
+
+async def _send_scarf_event(
+    category: str,
+    message_id: str,
+    metadata: dict = None,
+) -> None:
+    """Send a telemetry event to Scarf.
+    
+    Args:
+        category: Event category
+        message_id: Event message ID
+        metadata: Optional dictionary of additional metadata to include in the event
+    """
+    if is_do_not_track():
+        logger.debug(
+            f"Telemetry event aborted: {category}:{message_id}. DO_NOT_TRACK is enabled"
+        )
+        return
+    
+    http_client = _get_http_client()
+    if http_client is None:
+        logger.error(
+            f"Telemetry event aborted: {category}:{message_id}. HTTP client not initialized"
+        )
+        return
+    
+    os_name = _get_os()
+    timestamp = _get_current_utc()
+    effective_base_url = _get_effective_base_url()
+    # Build URL with format: /openrag/{platform}.{version}
+    base_url = f"{effective_base_url}/{SCARF_PATH}/{PLATFORM_TYPE}.{OPENRAG_VERSION}"
+    
+    # Build query parameters
+    params = {
+        "clientType": CLIENT_TYPE,
+        "openrag_version": OPENRAG_VERSION,
+        "platform": PLATFORM_TYPE,
+        "os": os_name,
+        "category": category,
+        "message_id": message_id,
+        "timestamp": timestamp,
+    }
+    
+    # Add metadata if provided
+    if metadata:
+        for key, value in metadata.items():
+            if value is not None:
+                # URL encode the value
+                params[key] = str(value)
+    
+    url = f"{base_url}?{urlencode(params)}"
+    retry_count = 0
+    
+    while retry_count < MAX_RETRIES:
+        if retry_count == 0:
+            logger.info(f"Sending telemetry event: {category}:{message_id}...")
+        else:
+            logger.info(
+                f"Sending telemetry event: {category}:{message_id}. Retry #{retry_count}..."
+            )
+        
+        logger.debug(f"Telemetry URL: {url}")
+        
+        try:
+            response = await http_client.get(url)
+            status = response.status_code
+            
+            if 200 <= status < 300:
+                logger.info(
+                    f"Successfully sent telemetry event: {category}:{message_id}. Status: {status}"
+                )
+                return
+            elif 500 <= status < 600:
+                # Retry server errors
+                logger.error(
+                    f"Failed to send telemetry event: {category}:{message_id}. Status: {status}"
+                )
+            else:
+                # Non-retryable status codes (400, 401, 403, 404, 429, etc.)
+                logger.error(
+                    f"Failed to send telemetry event: {category}:{message_id}. "
+                    f"Status: {status} (non-retryable)"
+                )
+                return
+                
+        except httpx.TimeoutException as e:
+            # Retry timeout errors
+            logger.error(
+                f"Failed to send telemetry event: {category}:{message_id}. "
+                f"Timeout error: {e}"
+            )
+        except httpx.ConnectError as e:
+            # Retry connection errors
+            logger.error(
+                f"Failed to send telemetry event: {category}:{message_id}. "
+                f"Connection error: {e}"
+            )
+        except httpx.RequestError as e:
+            # Non-retryable request errors
+            logger.error(
+                f"Failed to send telemetry event: {category}:{message_id}. "
+                f"Request error: {e}"
+            )
+            return
+        except Exception as e:
+            logger.error(
+                f"Failed to send telemetry event: {category}:{message_id}. "
+                f"Unknown error: {e}"
+            )
+        
+        retry_count += 1
+        
+        if retry_count < MAX_RETRIES:
+            delay = _get_exponential_backoff_delay(retry_count)
+            await asyncio.sleep(delay)
+    
+    logger.error(
+        f"Failed to send telemetry event: {category}:{message_id}. "
+        f"Maximum retries exceeded: {MAX_RETRIES}"
+    )
+
+
+class TelemetryClient:
+    """Telemetry client for sending events to Scarf."""
+    
+    @staticmethod
+    async def send_event(category: str, message_id: str, metadata: dict = None) -> None:
+        """Send a telemetry event asynchronously.
+        
+        Args:
+            category: Event category
+            message_id: Event message ID
+            metadata: Optional dictionary of additional metadata (e.g., {"llm_model": "gpt-4o"})
+        """
+        if is_do_not_track():
+            logger.debug(
+                f"Telemetry event aborted: {category}:{message_id}. DO_NOT_TRACK is enabled"
+            )
+            return
+        
+        try:
+            await _send_scarf_event(category, message_id, metadata)
+        except Exception as e:
+            logger.error(f"Error sending telemetry event: {e}")
+    
+    @staticmethod
+    def send_event_sync(category: str, message_id: str, metadata: dict = None) -> None:
+        """Send a telemetry event synchronously (creates a task).
+        
+        This is a convenience method for use in synchronous contexts.
+        It creates an async task but doesn't wait for it.
+        
+        Args:
+            category: Event category
+            message_id: Event message ID
+            metadata: Optional dictionary of additional metadata
+        """
+        if is_do_not_track():
+            logger.debug(
+                f"Telemetry event aborted: {category}:{message_id}. DO_NOT_TRACK is enabled"
+            )
+            return
+        
+        try:
+            # Try to get the current event loop
+            try:
+                loop = asyncio.get_event_loop()
+                if loop.is_running():
+                    # If loop is running, create a task
+                    asyncio.create_task(_send_scarf_event(category, message_id, metadata))
+                else:
+                    # If loop exists but not running, run it
+                    loop.run_until_complete(_send_scarf_event(category, message_id, metadata))
+            except RuntimeError:
+                # No event loop, create a new one
+                asyncio.run(_send_scarf_event(category, message_id, metadata))
+        except Exception as e:
+            logger.error(f"Error sending telemetry event: {e}")
+
+
+async def cleanup_telemetry_client() -> None:
+    """Cleanup the telemetry HTTP client."""
+    global _http_client
+    if _http_client is not None:
+        try:
+            await _http_client.aclose()
+            _http_client = None
+            logger.debug("Telemetry HTTP client closed")
+        except Exception as e:
+            logger.error(f"Error closing telemetry HTTP client: {e}")
+
diff --git a/src/utils/telemetry/message_id.py b/src/utils/telemetry/message_id.py
new file mode 100644
index 00000000..dd8339c3
--- /dev/null
+++ b/src/utils/telemetry/message_id.py
@@ -0,0 +1,197 @@
+"""Telemetry message IDs for OpenRAG backend.
+
+All message IDs start with ORBTA (OpenRAG Backend Telemetry Analytics).
+"""
+
+
+class MessageId:
+    """Telemetry message IDs."""
+    
+    # Category: APPLICATION_STARTUP ------------------------------------------->
+    
+    # Message: Application started successfully
+    ORBTA0001I = "ORBTA0001I"
+    # Message: Application startup initiated
+    ORBTA0002I = "ORBTA0002I"
+    # Message: Application shutdown initiated
+    ORBTA0003I = "ORBTA0003I"
+    
+    # Category: SERVICE_INITIALIZATION ----------------------------------------->
+    
+    # Message: Services initialized successfully
+    ORBTA0010I = "ORBTA0010I"
+    # Message: Service initialization started
+    ORBTA0011I = "ORBTA0011I"
+    # Message: Failed to initialize services
+    ORBTA0012E = "ORBTA0012E"
+    # Message: Failed to initialize OpenSearch client
+    ORBTA0013E = "ORBTA0013E"
+    # Message: Failed to generate JWT keys
+    ORBTA0014E = "ORBTA0014E"
+    
+    # Category: OPENSEARCH_SETUP ---------------------------------------------->
+    
+    # Message: OpenSearch connection established
+    ORBTA0020I = "ORBTA0020I"
+    # Message: OpenSearch connection failed
+    ORBTA0021E = "ORBTA0021E"
+    # Message: Waiting for OpenSearch to be ready
+    ORBTA0022W = "ORBTA0022W"
+    # Message: OpenSearch ready check timeout
+    ORBTA0023E = "ORBTA0023E"
+    
+    # Category: OPENSEARCH_INDEX ---------------------------------------------->
+    
+    # Message: OpenSearch index created successfully
+    ORBTA0030I = "ORBTA0030I"
+    # Message: OpenSearch index already exists
+    ORBTA0031I = "ORBTA0031I"
+    # Message: Failed to create OpenSearch index
+    ORBTA0032E = "ORBTA0032E"
+    # Message: Failed to initialize index
+    ORBTA0033E = "ORBTA0033E"
+    # Message: Knowledge filters index created
+    ORBTA0034I = "ORBTA0034I"
+    # Message: Failed to create knowledge filters index
+    ORBTA0035E = "ORBTA0035E"
+    
+    # Category: DOCUMENT_INGESTION -------------------------------------------->
+    
+    # Message: Document ingestion started
+    ORBTA0040I = "ORBTA0040I"
+    # Message: Document ingestion completed successfully
+    ORBTA0041I = "ORBTA0041I"
+    # Message: Document ingestion failed
+    ORBTA0042E = "ORBTA0042E"
+    # Message: Default documents ingestion started
+    ORBTA0043I = "ORBTA0043I"
+    # Message: Default documents ingestion completed
+    ORBTA0044I = "ORBTA0044I"
+    # Message: Default documents ingestion failed
+    ORBTA0045E = "ORBTA0045E"
+    
+    # Category: DOCUMENT_PROCESSING -------------------------------------------->
+    
+    # Message: Document processing started
+    ORBTA0050I = "ORBTA0050I"
+    # Message: Document processing completed
+    ORBTA0051I = "ORBTA0051I"
+    # Message: Document processing failed
+    ORBTA0052E = "ORBTA0052E"
+    # Message: Process pool recreation attempted
+    ORBTA0053W = "ORBTA0053W"
+    
+    # Category: AUTHENTICATION ------------------------------------------------>
+    
+    # Message: Authentication successful
+    ORBTA0060I = "ORBTA0060I"
+    # Message: Authentication failed
+    ORBTA0061E = "ORBTA0061E"
+    # Message: User logged out
+    ORBTA0062I = "ORBTA0062I"
+    # Message: OAuth callback received
+    ORBTA0063I = "ORBTA0063I"
+    # Message: OAuth callback failed
+    ORBTA0064E = "ORBTA0064E"
+    
+    # Category: CONNECTOR_OPERATIONS ------------------------------------------->
+    
+    # Message: Connector connection established
+    ORBTA0070I = "ORBTA0070I"
+    # Message: Connector connection failed
+    ORBTA0071E = "ORBTA0071E"
+    # Message: Connector sync started
+    ORBTA0072I = "ORBTA0072I"
+    # Message: Connector sync completed
+    ORBTA0073I = "ORBTA0073I"
+    # Message: Connector sync failed
+    ORBTA0074E = "ORBTA0074E"
+    # Message: Connector webhook received
+    ORBTA0075I = "ORBTA0075I"
+    # Message: Connector webhook failed
+    ORBTA0076E = "ORBTA0076E"
+    # Message: Failed to load persisted connections
+    ORBTA0077W = "ORBTA0077W"
+    
+    # Category: FLOW_OPERATIONS ------------------------------------------------>
+    
+    # Message: Flow backup completed
+    ORBTA0080I = "ORBTA0080I"
+    # Message: Flow backup failed
+    ORBTA0081E = "ORBTA0081E"
+    # Message: Flow reset detected
+    ORBTA0082W = "ORBTA0082W"
+    # Message: Flow reset check failed
+    ORBTA0083E = "ORBTA0083E"
+    # Message: Settings reapplied after flow reset
+    ORBTA0084I = "ORBTA0084I"
+    
+    # Category: TASK_OPERATIONS ------------------------------------------------>
+    
+    # Message: Task created successfully
+    ORBTA0090I = "ORBTA0090I"
+    # Message: Task failed
+    ORBTA0091E = "ORBTA0091E"
+    # Message: Task cancelled
+    ORBTA0092I = "ORBTA0092I"
+    
+    # Category: CHAT_OPERATIONS ------------------------------------------------>
+    
+    # Message: Chat request received
+    ORBTA0100I = "ORBTA0100I"
+    # Message: Chat request completed
+    ORBTA0101I = "ORBTA0101I"
+    # Message: Chat request failed
+    ORBTA0102E = "ORBTA0102E"
+    
+    # Category: ERROR_CONDITIONS ----------------------------------------------->
+    
+    # Message: Critical error occurred
+    ORBTA0110E = "ORBTA0110E"
+    # Message: Warning condition
+    ORBTA0111W = "ORBTA0111W"
+    
+    # Category: SETTINGS_OPERATIONS -------------------------------------------->
+    
+    # Message: Settings updated successfully
+    ORBTA0120I = "ORBTA0120I"
+    # Message: Settings update failed
+    ORBTA0121E = "ORBTA0121E"
+    # Message: LLM provider changed
+    ORBTA0122I = "ORBTA0122I"
+    # Message: LLM model changed
+    ORBTA0123I = "ORBTA0123I"
+    # Message: Embedding provider changed
+    ORBTA0124I = "ORBTA0124I"
+    # Message: Embedding model changed
+    ORBTA0125I = "ORBTA0125I"
+    # Message: System prompt updated
+    ORBTA0126I = "ORBTA0126I"
+    # Message: Chunk settings updated
+    ORBTA0127I = "ORBTA0127I"
+    # Message: Docling settings updated
+    ORBTA0128I = "ORBTA0128I"
+    # Message: Provider credentials updated
+    ORBTA0129I = "ORBTA0129I"
+    
+    # Category: ONBOARDING ----------------------------------------------------->
+    
+    # Message: Onboarding started
+    ORBTA0130I = "ORBTA0130I"
+    # Message: Onboarding completed successfully
+    ORBTA0131I = "ORBTA0131I"
+    # Message: Onboarding failed
+    ORBTA0132E = "ORBTA0132E"
+    # Message: LLM provider selected during onboarding
+    ORBTA0133I = "ORBTA0133I"
+    # Message: LLM model selected during onboarding
+    ORBTA0134I = "ORBTA0134I"
+    # Message: Embedding provider selected during onboarding
+    ORBTA0135I = "ORBTA0135I"
+    # Message: Embedding model selected during onboarding
+    ORBTA0136I = "ORBTA0136I"
+    # Message: Sample data ingestion requested
+    ORBTA0137I = "ORBTA0137I"
+    # Message: Configuration marked as edited
+    ORBTA0138I = "ORBTA0138I"
+