diff --git a/src/middlewares/openaiSDKmiddleware.py b/src/middlewares/openaiSDKmiddleware.py
new file mode 100644
index 00000000..6a3ec1d7
--- /dev/null
+++ b/src/middlewares/openaiSDKmiddleware.py
@@ -0,0 +1,145 @@
+import json
+from typing import Any, Dict, List, Optional
+from fastapi import HTTPException, Request
+from .middleware import jwt_middleware
+from .ratelimitMiddleware import rate_limit
+
+
+def _extract_pauthkey_from_authorization(request: Request) -> str:
+    authorization = request.headers.get("Authorization")
+    if not authorization or not authorization.lower().startswith("bearer "):
+        raise HTTPException(
+            status_code=401,
+            detail="Authorization header with Bearer pauthkey is required.",
+        )
+
+    token = authorization.split(" ", 1)[1].strip()
+    if not token:
+        raise HTTPException(status_code=401, detail="Bearer token cannot be empty.")
+    return token
+
+
+def _normalize_message_content(content: Any) -> Optional[str]:
+    if isinstance(content, str):
+        content = content.strip()
+        return content or None
+
+    if isinstance(content, list):
+        text_parts: List[str] = []
+        for item in content:
+            if isinstance(item, dict):
+                item_type = (item.get("type") or "").lower()
+                if item_type in {"text", "input_text"}:
+                    text_value = (item.get("text") or "").strip()
+                    if text_value:
+                        text_parts.append(text_value)
+        merged = "\n".join(text_parts).strip()
+        return merged or None
+
+    return None
+
+
+def _extract_text_from_input(input_value: Any) -> Optional[str]:
+    if isinstance(input_value, str):
+        text = input_value.strip()
+        return text or None
+
+    if isinstance(input_value, dict):
+        return _normalize_message_content(input_value.get("content"))
+
+    if isinstance(input_value, list):
+        segments: List[str] = []
+        for chunk in input_value:
+            if isinstance(chunk, dict):
+                content = chunk.get("content")
+                extracted = _normalize_message_content(content)
+                if extracted:
+                    segments.append(extracted)
+                elif isinstance(chunk.get("text"), str):
+                    text_value = chunk["text"].strip()
+                    if text_value:
+                        segments.append(text_value)
+        merged = "\n".join(segments).strip()
+        return merged or None
+
+    return None
+
+
+def _extract_agent_identifier(payload: Dict[str, Any]) -> str:
+    agent_id = payload.get("agent_id") or payload.get("bridge_id")
+
+    if isinstance(agent_id, str):
+        agent_id = agent_id.strip()
+    if not agent_id:
+        raise HTTPException(
+            status_code=400,
+            detail="`agent_id` must be included in the request body.",
+        )
+    return str(agent_id)
+
+
+def _build_internal_body(payload: Dict[str, Any]) -> Dict[str, Any]:
+    agent_id = _extract_agent_identifier(payload)
+    llm_model = payload.get("model")
+
+    user_message = _extract_text_from_input(payload.get("input"))
+
+    if not user_message:
+        raise HTTPException(status_code=400, detail="No user message found in payload.")
+
+    configuration = payload.get("configuration") or {}
+
+    if isinstance(llm_model, str) and llm_model.strip():
+        configuration.setdefault("model", llm_model.strip())
+
+    internal_body: Dict[str, Any] = {
+        "agent_id": agent_id,
+        "bridge_id": agent_id,
+
+        "user": user_message,
+        "messages": payload.get("messages", []),
+        "thread_id": payload.get("conversation_id")
+        or payload.get("thread_id") or None,
+        "sub_thread_id": payload.get("sub_thread_id") or None,
+        "variables": payload.get("variables") or {},
+        "configuration": configuration,
+        "attachments": payload.get("attachments", []),
+    }
+
+    return internal_body
+
+
+def _override_request_body(request: Request, body: Dict[str, Any]) -> None:
+    body_bytes = json.dumps(body).encode("utf-8")
+    request._body = body_bytes  # type: ignore[attr-defined]
+    request._json = body  # type: ignore[attr-defined]
+    request._stream_consumed = True  # type: ignore[attr-defined]
+    if "_form" in request.__dict__:
+        request.__dict__.pop("_form")
+
+
+def _set_pauthkey_header(request: Request, token: str) -> None:
+    raw_headers = list(request.scope.get("headers", []))
+    filtered_headers = [
+        (name, value)
+        for name, value in raw_headers
+        if name.lower() != b"authorization"
+    ]
+    filtered_headers.append((b"pauthkey", token.encode("utf-8")))
+    request.scope["headers"] = filtered_headers
+    if "_headers" in request.__dict__:
+        del request.__dict__["_headers"]
+
+
+async def openai_sdk_middleware(request: Request):
+    payload = await request.json()
+    internal_body = _build_internal_body(payload)
+    token = _extract_pauthkey_from_authorization(request)
+
+    _override_request_body(request, internal_body)
+    _set_pauthkey_header(request, token)
+    request.state.openai_payload = payload
+
+    await jwt_middleware(request)
+    await rate_limit(request, key_path="body.bridge_id", points=100)
+    await rate_limit(request, key_path="body.thread_id", points=20)
\ No newline at end of file
diff --git a/src/routes/v2/modelRouter.py b/src/routes/v2/modelRouter.py
index cfba4525..d5e715b3 100644
--- a/src/routes/v2/modelRouter.py
+++ b/src/routes/v2/modelRouter.py
@@ -1,17 +1,21 @@
 from fastapi import APIRouter, Depends, Request, HTTPException
 from fastapi.responses import JSONResponse
 import asyncio
+import json
 
 from src.services.commonServices.common import chat_multiple_agents, embedding, batch, run_testcases, image, orchestrator_chat
 from src.services.commonServices.baseService.utils import make_request_data
 from ...middlewares.middleware import jwt_middleware
 from ...middlewares.getDataUsingBridgeId import add_configuration_data_to_body
+from ...middlewares.openaiSDKmiddleware import openai_sdk_middleware
+
 from concurrent.futures import ThreadPoolExecutor
 from config import Config
 from src.services.commonServices.queueService.queueService import queue_obj
 from src.middlewares.ratelimitMiddleware import rate_limit
 from models.mongo_connection import db
 from globals import *
+from src.services.utils.openai_sdk_utils import run_openai_chat_and_format
 
 router = APIRouter()
 
@@ -58,6 +62,11 @@ async def chat_completion(request: Request, db_config: dict = Depends(add_config
         return result
 
 
+@router.post('/openai/responses', dependencies=[Depends(openai_sdk_middleware)])
+async def openai_sdk_responses(request: Request, db_config: dict = Depends(add_configuration_data_to_body)):
+    return await run_openai_chat_and_format(request, db_config, chat_completion)
+
+
 @router.post('/playground/chat/completion/{bridge_id}', dependencies=[Depends(auth_and_rate_limit)])
 async def playground_chat_completion_bridge(request: Request, db_config: dict = Depends(add_configuration_data_to_body)):
     request.state.is_playground = True
diff --git a/src/services/utils/common_utils.py b/src/services/utils/common_utils.py
index 796c31ea..fa02b6f0 100644
--- a/src/services/utils/common_utils.py
+++ b/src/services/utils/common_utils.py
@@ -52,11 +52,19 @@ def setup_agent_pre_tools(parsed_data, bridge_configurations):
         # Get required params from pre_tools_data
         required_params = pre_tools_data.get('required_params', [])
         
+        # Get variables_path mapping for the current agent
+        variables_path = current_config.get('variables_path', {}).get(pre_tools_data.get('function_name'))
+        
         # Build args from agent's own variables
         args = {}
         for param in required_params:
-            if param in agent_variables:
-                args[param] = agent_variables[param]
+            # Check if there's a mapping in variables_path for this param
+            if param in variables_path:
+                # Get the mapped variable name
+                mapped_variable = variables_path[param]
+                # Use the mapped variable to get value from agent_variables
+                if mapped_variable in agent_variables:
+                    args[param] = agent_variables[mapped_variable]
         
         # Update the pre_tools args with agent-specific variables
         parsed_data['pre_tools']['args'] = args
diff --git a/src/services/utils/openai_sdk_utils.py b/src/services/utils/openai_sdk_utils.py
new file mode 100644
index 00000000..49dfa5ec
--- /dev/null
+++ b/src/services/utils/openai_sdk_utils.py
@@ -0,0 +1,169 @@
+import json
+import time
+import uuid
+from typing import Any, Awaitable, Callable, Dict, List, Optional
+
+from fastapi import HTTPException, Request
+from fastapi.responses import JSONResponse
+
+
+def _build_output_blocks(message_content: str) -> List[Dict[str, Any]]:
+    reasoning_block = {
+        "id": f"rs_{uuid.uuid4().hex}",
+        "type": "reasoning",
+        "summary": [],
+    }
+
+    message_block = {
+        "id": f"msg_{uuid.uuid4().hex}",
+        "type": "message",
+        "status": "completed",
+        "role": "assistant",
+        "content": [
+            {
+                "type": "output_text",
+                "text": message_content,
+            }
+        ],
+    }
+
+    return [reasoning_block, message_block]
+
+
+def format_openai_response(chat_response: Dict[str, Any], original_payload: Dict[str, Any] | None) -> Dict[str, Any]:
+    response_data = chat_response.get("response", {}).get("data", {})
+    usage_data = chat_response.get("response", {}).get("usage", {}) or {}
+
+    message_content = response_data.get("content")
+    if isinstance(message_content, list):
+        message_content = "\n".join(
+            chunk.get("text", "") if isinstance(chunk, dict) else str(chunk)
+            for chunk in message_content
+        ).strip()
+    elif not isinstance(message_content, str):
+        message_content = str(message_content or "")
+
+    message_content = message_content.strip()
+    finish_reason = response_data.get("finish_reason") or usage_data.get("finish_reason")
+    model = original_payload.get("model") if isinstance(original_payload, dict) else None
+
+    response_id = f"resp_{uuid.uuid4().hex}"
+    created_at = int(time.time())
+
+    return {
+        "id": response_id,
+        "object": "response",
+        "created_at": created_at,
+        "status": "completed",
+        "background": False,
+        "billing": {"payer": "developer"},
+        "error": None,
+        "incomplete_details": None,
+        "instructions": None,
+        "max_output_tokens": None,
+        "max_tool_calls": None,
+        "model": model,
+        "output": _build_output_blocks(message_content),
+        "parallel_tool_calls": True,
+        "previous_response_id": None,
+        "prompt_cache_key": None,
+        "prompt_cache_retention": None,
+        "reasoning": {"effort": "medium", "summary": None},
+        "safety_identifier": None,
+        "service_tier": "default",
+        "store": True,
+        "temperature": original_payload.get("temperature") if isinstance(original_payload, dict) else None,
+        "text": {"format": {"type": "text"}, "verbosity": "medium"},
+        "tool_choice": original_payload.get("tool_choice") if isinstance(original_payload, dict) else "auto",
+        "tools": original_payload.get("tools") if isinstance(original_payload, dict) else [],
+        "top_logprobs": 0,
+        "top_p": original_payload.get("top_p") if isinstance(original_payload, dict) else 1,
+        "truncation": "disabled",
+        "usage": {
+            "input_tokens": usage_data.get("input_tokens"),
+            "input_tokens_details": {
+                "cached_tokens": usage_data.get("cached_input_tokens", 0),
+            },
+            "output_tokens": usage_data.get("output_tokens"),
+            "output_tokens_details": {
+                "reasoning_tokens": usage_data.get("reasoning_tokens"),
+            },
+            "total_tokens": usage_data.get("total_tokens"),
+        },
+        "user": original_payload.get("user") if isinstance(original_payload, dict) else None,
+        "metadata": original_payload.get("metadata") if isinstance(original_payload, dict) else {},
+        "output_text": message_content,
+        "finish_reason": finish_reason or "stop",
+    }
+
+
+def _format_error_detail(
+    message: str,
+    error_type: str = "invalid_request_error",
+    code: Optional[str] = None,
+    param: Optional[str] = None,
+) -> Dict[str, Any]:
+    return {
+        "message": message,
+        "type": error_type,
+        "param": param,
+        "code": code
+    }
+
+
+def _extract_error_message(error_payload: Dict[str, Any]) -> str:
+    error_value = error_payload.get("error")
+
+    if isinstance(error_value, str):
+        return error_value
+
+    if isinstance(error_value, dict):
+        return error_value.get("message") or error_value.get("detail") or json.dumps(error_value)
+
+    if isinstance(error_payload.get("detail"), str):
+        return error_payload["detail"]
+
+    return json.dumps(error_payload)
+
+
+def _handle_failed_response(
+    response_payload: Dict[str, Any],
+    status_code: int = 400,
+) -> None:
+    message = _extract_error_message(response_payload)
+    error_type = response_payload.get("error_type") or "invalid_request_error"
+    code = response_payload.get("error_code")
+    param = response_payload.get("error_param")
+
+    raise HTTPException(
+        status_code=status_code,
+        detail=_format_error_detail(message, error_type=error_type, code=code, param=param),
+    )
+
+
+async def run_openai_chat_and_format(
+    request: Request,
+    db_config: Dict[str, Any],
+    chat_handler: Callable[[Request, Dict[str, Any]], Awaitable[Any]],
+) -> Dict[str, Any]:
+    openai_payload = getattr(request.state, "openai_payload", {})
+    internal_response = await chat_handler(request, db_config)
+
+    if isinstance(internal_response, JSONResponse):
+        content = internal_response.body
+        try:
+            content_dict = json.loads(content)
+        except Exception:
+            content_dict = {}
+        if not content_dict.get("success", True):
+            status_code = content_dict.get("status_code") or 400
+            _handle_failed_response(content_dict, status_code=status_code)
+        chat_response = content_dict
+    else:
+        chat_response = internal_response
+
+    if isinstance(chat_response, dict) and not chat_response.get("success", True):
+        status_code = chat_response.get("status_code") or 400
+        _handle_failed_response(chat_response, status_code=status_code)
+
+    return format_openai_response(chat_response, openai_payload)
diff --git a/src/services/utils/update_and_check_cost.py b/src/services/utils/update_and_check_cost.py
index 76955b6c..b3220a36 100644
--- a/src/services/utils/update_and_check_cost.py
+++ b/src/services/utils/update_and_check_cost.py
@@ -127,9 +127,11 @@ async def check_bridge_api_folder_limits(result, bridge_data,version_id):
     if not isinstance(bridge_data, dict):
         return None
 
-    folder_identifier = result.get('folder_id')
+    result_data = result if isinstance(result, dict) else {}
+
+    folder_identifier = result_data.get('folder_id')
     if folder_identifier:
-        folder_error = await _check_limit(limit_types['folder'],data=result,version_id=version_id)
+        folder_error = await _check_limit(limit_types['folder'],data=result_data,version_id=version_id)
         if folder_error:
             return folder_error
 
@@ -137,12 +139,12 @@ async def check_bridge_api_folder_limits(result, bridge_data,version_id):
     if bridge_error:
         return bridge_error
 
-    service_identifier = result.get('service')
+    service_identifier = result_data.get('service')
     if service_identifier and (
-        (result.get('apikeys') and service_identifier in result.get('apikeys', {})) or
-        (result.get('folder_apikeys') and service_identifier in result.get('folder_apikeys', {}))
+        (result_data.get('apikeys') and service_identifier in result_data.get('apikeys', {})) or
+        (result_data.get('folder_apikeys') and service_identifier in result_data.get('folder_apikeys', {}))
     ):
-        api_error = await _check_limit(limit_types['apikey'], data=result,version_id=version_id)
+        api_error = await _check_limit(limit_types['apikey'], data=result_data,version_id=version_id)
         if api_error:
             return api_error