diff --git a/app/config.py b/app/config.py
index 37ff2d8..217db10 100644
--- a/app/config.py
+++ b/app/config.py
@@ -1,7 +1,10 @@
 from pydantic_settings import BaseSettings
 
 class Settings(BaseSettings):
-    # S3 settings
+    # COSI settings (preferred)
+    cosi_bucket_info_path: str = ""
+
+    # S3 settings (fallback)
     s3_endpoint: str = "http://localhost:9000"
     s3_access_key_id: str = "minioadmin"
     s3_secret_key: str = "minioadmin"
diff --git a/app/s3.py b/app/s3.py
index 3f42bd3..b2d7f2d 100644
--- a/app/s3.py
+++ b/app/s3.py
@@ -1,6 +1,7 @@
 import boto3
-import tempfile
+import json
 import os
+import tempfile
 from botocore.client import Config
 from fastapi import UploadFile
 from app.config import settings
@@ -8,7 +9,36 @@ from app.logger import get_logger
 
 logger = get_logger(__name__)
 
+
+def read_bucket_info() -> dict:
+    if not settings.cosi_bucket_info_path:
+        raise ValueError("COSI_BUCKET_INFO_PATH not set")
+    with open(settings.cosi_bucket_info_path, "r") as f:
+        return json.load(f)
+
+
+def get_cosi_s3_config() -> dict:
+    bucket_info = read_bucket_info()
+    s3_conf = bucket_info["spec"]["secretS3"]
+    return {
+        "endpoint": s3_conf["endpoint"],
+        "access_key": s3_conf["accessKeyID"],
+        "secret_key": s3_conf["accessSecretKey"],
+        "bucket": bucket_info["spec"]["bucketName"]
+    }
+
+
 def get_client():
+    if settings.cosi_bucket_info_path:
+        cosi_config = get_cosi_s3_config()
+        return boto3.client(
+            "s3",
+            endpoint_url=cosi_config["endpoint"],
+            aws_access_key_id=cosi_config["access_key"],
+            aws_secret_access_key=cosi_config["secret_key"],
+            config=Config(signature_version="s3v4"),
+            region_name="us-east-1"
+        )
     return boto3.client(
         "s3",
         endpoint_url=settings.s3_endpoint,
@@ -18,51 +48,54 @@ def get_client():
         region_name=settings.s3_region
     )
 
+
+def get_bucket_name() -> str:
+    if settings.cosi_bucket_info_path:
+        return get_cosi_s3_config()["bucket"]
+    return settings.s3_bucket
+
+
 def ensure_bucket_exists() -> None:
-    """Ensure the S3 bucket exists, create it if it doesn't exist.
-    
-    Raises:
-        Exception: If bucket creation fails (service will fail to start)
-    """
+    bucket_name = get_bucket_name()
     client = get_client()
     try:
-        client.head_bucket(Bucket=settings.s3_bucket)
-        logger.info(f"Bucket '{settings.s3_bucket}' already exists")
+        client.head_bucket(Bucket=bucket_name)
+        logger.info(f"Bucket '{bucket_name}' already exists")
     except client.exceptions.ClientError as e:
         error_code = e.response['Error']['Code']
         if error_code == '404':
             try:
                 client.create_bucket(
-                    Bucket=settings.s3_bucket,
+                    Bucket=bucket_name,
                     CreateBucketConfiguration={
-                        'LocationConstraint': settings.s3_region
+                        'LocationConstraint': 'us-east-1'
                     }
                 )
-                logger.info(f"Created bucket '{settings.s3_bucket}'")
+                logger.info(f"Created bucket '{bucket_name}'")
             except Exception as create_error:
-                logger.error(f"Failed to create bucket '{settings.s3_bucket}': {create_error}")
+                logger.error(f"Failed to create bucket '{bucket_name}': {create_error}")
                 raise
         else:
             logger.error(f"Error checking bucket: {e}")
             raise
 
+
 def upload_file(file: UploadFile, s3_key: str, content_type: str, metadata: dict = None) -> str:
-    """Upload file to S3 with metadata"""
+    bucket_name = get_bucket_name()
     client = get_client()
-    
-    # Read file content
+
     file.file.seek(0, os.SEEK_END)
     file_size = file.file.tell()
     file.file.seek(0)
     file_content = file.file.read()
     file.file.seek(0)
-    
+
     extra_args = {"ContentType": content_type}
     if metadata:
         extra_args["Metadata"] = metadata
-    
+
     client.put_object(
-        Bucket=settings.s3_bucket,
+        Bucket=bucket_name,
         Key=s3_key,
         Body=file_content,
         ContentLength=file_size,
@@ -71,40 +104,45 @@ def upload_file(file: UploadFile, s3_key: str, content_type: str, metadata: dict
     )
     return s3_key
 
+
 def delete_file(s3_key: str) -> None:
-    """Delete file from S3"""
+    bucket_name = get_bucket_name()
     client = get_client()
-    client.delete_object(Bucket=settings.s3_bucket, Key=s3_key)
+    client.delete_object(Bucket=bucket_name, Key=s3_key)
+
 
 def file_exists(s3_key: str) -> bool:
-    """Check if file exists in S3"""
+    bucket_name = get_bucket_name()
     client = get_client()
     try:
-        client.head_object(Bucket=settings.s3_bucket, Key=s3_key)
+        client.head_object(Bucket=bucket_name, Key=s3_key)
         return True
     except client.exceptions.ClientError:
         return False
 
+
 def get_file_metadata(s3_key: str) -> dict:
-    """Get file metadata from S3"""
+    bucket_name = get_bucket_name()
     client = get_client()
-    response = client.head_object(Bucket=settings.s3_bucket, Key=s3_key)
+    response = client.head_object(Bucket=bucket_name, Key=s3_key)
     return response.get("Metadata", {})
 
+
 def download_to_temp(s3_key: str) -> str:
-    """Download file from S3 to temp file"""
+    bucket_name = get_bucket_name()
     client = get_client()
     suffix = os.path.splitext(s3_key)[-1] or ".tmp"
     tmp = tempfile.NamedTemporaryFile(delete=False, suffix=suffix)
-    client.download_fileobj(settings.s3_bucket, s3_key, tmp)
+    client.download_fileobj(bucket_name, s3_key, tmp)
     tmp.close()
     return tmp.name
 
+
 def presigned_download_url(s3_key: str, expires_in: int = 3600) -> str:
-    """Generate presigned download URL"""
+    bucket_name = get_bucket_name()
     client = get_client()
     return client.generate_presigned_url(
         "get_object",
-        Params={"Bucket": settings.s3_bucket, "Key": s3_key},
+        Params={"Bucket": bucket_name, "Key": s3_key},
         ExpiresIn=expires_in
-    )
+    )
\ No newline at end of file
diff --git a/ops/chart/values.yaml b/ops/chart/values.yaml
index e66f352..7b0f2de 100644
--- a/ops/chart/values.yaml
+++ b/ops/chart/values.yaml
@@ -11,22 +11,8 @@ controllers:
         env:
           LOG_LEVEL: info
           PORT: "8082"
-          S3_ENDPOINT:
-            value: "https://dev.s3.corredorconect.com/"
-          S3_ACCESS_KEY_ID:
-            valueFrom:
-              secretKeyRef:
-                name: 'document-service-s3-credentials'
-                key: rootAccessKeyId
-          S3_SECRET_KEY:
-            valueFrom:
-              secretKeyRef:
-                name: 'document-service-s3-credentials'
-                key: rootSecretAccessKey
-          S3_BUCKET:
-            value: "document-bucket"
-          S3_REGION:
-            value: "us-east-1"
+          COSI_BUCKET_INFO_PATH:
+            value: "/var/run/secrets/cosi/BucketInfo"
         probes:
           liveness:
             enabled: true
@@ -56,6 +42,15 @@ service:
         port: 8082
         protocol: HTTP
 
+persistence:
+  cosi-bucket-info:
+    enabled: true
+    type: secret
+    name: document-service-s3-credentials
+    globalMounts:
+      - path: /var/run/secrets/cosi
+        readOnly: true
+
 rawResources:
   bucket:
     enabled: true