diff --git a/openbb_sdk/providers/fmp/openbb_fmp/models/major_indices_constituents.py b/openbb_sdk/providers/fmp/openbb_fmp/models/major_indices_constituents.py
index bb9dcfab014..e2a10e3ebe7 100644
--- a/openbb_sdk/providers/fmp/openbb_fmp/models/major_indices_constituents.py
+++ b/openbb_sdk/providers/fmp/openbb_fmp/models/major_indices_constituents.py
@@ -2,17 +2,18 @@
 
 
 from datetime import datetime
-from typing import Any, Dict, List
+from typing import Any, Dict, List, Optional
 
 from openbb_provider.abstract.fetcher import Fetcher
 from openbb_provider.models.major_indices_constituents import (
     MajorIndicesConstituentsData,
     MajorIndicesConstituentsQueryParams,
 )
-from pydantic import validator
 
 from openbb_fmp.utils.helpers import get_data_many
 
+from pydantic import validator
+
 
 class FMPMajorIndicesConstituentsQueryParams(MajorIndicesConstituentsQueryParams):
     """FMP Major Indices Constituents query.
@@ -20,18 +21,20 @@ class FMPMajorIndicesConstituentsQueryParams(MajorIndicesConstituentsQueryParams
     Source: https://site.financialmodelingprep.com/developer/docs/list-of-dow-companies-api/
             https://site.financialmodelingprep.com/developer/docs/list-of-sp-500-companies-api/
             https://site.financialmodelingprep.com/developer/docs/list-of-nasdaq-companies-api/
-
-    Parameter
-    ---------
-    index : Literal['nasdaq', 'sp500', 'dowjones']
-        The index for which we want to fetch the constituents. Default is 'dowjones'.
     """
 
 
 class FMPMajorIndicesConstituentsData(MajorIndicesConstituentsData):
     """FMP Major Indices Constituents data."""
 
-    @validator("dateFirstAdded", pre=True)
+    class Config:
+        fields = {
+            "sub_sector": "subSector",
+            "headquarter": "headQuarter",
+            "date_first_added": "dateFirstAdded",
+        }
+
+    @validator("dateFirstAdded", pre=True, check_fields=False)
     def date_first_added_validate(cls, v):  # pylint: disable=E0213
         try:
             return datetime.strptime(v, "%Y-%m-%d") if v else None
@@ -39,7 +42,7 @@ class FMPMajorIndicesConstituentsData(MajorIndicesConstituentsData):
             # For returning string in case of mismatched dates
             return v
 
-    @validator("founded", pre=True)
+    @validator("founded", pre=True, check_fields=False)
     def founded_validate(cls, v):  # pylint: disable=E0213
         try:
             return datetime.strptime(v, "%Y-%m-%d") if v else None
@@ -64,10 +67,14 @@ class FMPMajorIndicesConstituentsFetcher(
 
     @staticmethod
     def extract_data(
-        query: FMPMajorIndicesConstituentsQueryParams, api_key: str
+        query: FMPMajorIndicesConstituentsQueryParams,
+        credentials: Optional[Dict[str, str]],
     ) -> List[FMPMajorIndicesConstituentsData]:
+        api_key = credentials.get("fmp_api_key") if credentials else ""
+
         base_url = "https://financialmodelingprep.com/api/v3"
         url = f"{base_url}/{query.index}_constituent/?apikey={api_key}"
+
         return get_data_many(url, FMPMajorIndicesConstituentsData)
 
     @staticmethod
diff --git a/openbb_sdk/sdk/provider/openbb_provider/models/major_indices_constituents.py b/openbb_sdk/sdk/provider/openbb_provider/models/major_indices_constituents.py
index 7bf06c6cada..286a2bcf882 100644
--- a/openbb_sdk/sdk/provider/openbb_provider/models/major_indices_constituents.py
+++ b/openbb_sdk/sdk/provider/openbb_provider/models/major_indices_constituents.py
@@ -4,55 +4,41 @@
 from datetime import date
 from typing import Literal, Optional, Union
 
-from pydantic import Field
-
 from openbb_provider.abstract.data import Data
 from openbb_provider.abstract.query_params import QueryParams
-from openbb_provider.metadata import QUERY_DESCRIPTIONS
+from openbb_provider.models.base import BaseSymbol
+
+from pydantic import Field
 
 
 class MajorIndicesConstituentsQueryParams(QueryParams):
-    """Major Indices Constituents query.
-
-    Parameter
-    ---------
-    index : Literal['nasdaq', 'sp500', 'dowjones']
-        The index for which we want to fetch the constituents. Default is 'dowjones'.
-    """
+    """Major Indices Constituents Query."""
 
     index: Literal["nasdaq", "sp500", "dowjones"] = Field(
-        description=QUERY_DESCRIPTIONS.get("index", ""),
         default="dowjones",
+        description="The index for which we want to fetch the constituents.",
     )
 
 
-class MajorIndicesConstituentsData(Data):
-    """Major Indices Constituents price data.
+class MajorIndicesConstituentsData(Data, BaseSymbol):
+    """Major Indices Constituents Data."""
 
-    Returns
-    -------
-    symbol : str
-        The symbol of the constituent company in the index.
-    name : str
-        The name of the constituent company in the index.
-    sector : str
-        The sector the constituent company in the index belongs to.
-    subSector : str
-        The sub-sector the constituent company in the index belongs to.
-    headQuarter : str
-        The location of the headquarter of the constituent company in the index.
-    dateFirstAdded : date
-        The date the constituent company was added to the index.
-    cik : int
-        The Central Index Key of the constituent company in the index.
-    founded : date
-        The founding year of the constituent company in the index.
-    """
-
-    name: str
-    sector: str
-    subSector: Optional[str] = Field(alias="sub_sector")
-    headQuarter: Optional[str] = Field(alias="headquarter")
-    dateFirstAdded: Optional[Union[date, str]] = Field(alias="date_first_added")
-    cik: int
-    founded: Union[date, str]
+    name: str = Field(description="The name of the constituent company in the index.")
+    sector: str = Field(
+        description="The sector the constituent company in the index belongs to."
+    )
+    sub_sector: Optional[str] = Field(
+        description="The sub-sector the constituent company in the index belongs to."
+    )
+    headquarter: Optional[str] = Field(
+        description="The location of the headquarter of the constituent company in the index."
+    )
+    date_first_added: Optional[Union[date, str]] = Field(
+        description="The date the constituent company was added to the index."
+    )
+    cik: int = Field(
+        description="The Central Index Key of the constituent company in the index."
+    )
+    founded: Union[date, str] = Field(
+        description="The founding year of the constituent company in the index."
+    )