diff --git a/src/uipath/platform/context_grounding/_context_grounding_service.py b/src/uipath/platform/context_grounding/_context_grounding_service.py
index b7152da61..c0a4eab15 100644
--- a/src/uipath/platform/context_grounding/_context_grounding_service.py
+++ b/src/uipath/platform/context_grounding/_context_grounding_service.py
@@ -1,3 +1,4 @@
+import uuid
 from pathlib import Path
 from typing import Annotated, Any, Dict, List, Optional, Tuple, Union
 
@@ -33,11 +34,13 @@
 )
 from .context_grounding_index import ContextGroundingIndex
 from .context_grounding_payloads import (
+    AttachmentsDataSource,
     BucketDataSource,
     BucketSourceConfig,
     ConfluenceDataSource,
     ConfluenceSourceConfig,
     CreateIndexPayload,
+    CreateJitIndexPayload,
     DropboxDataSource,
     DropboxSourceConfig,
     GoogleDriveDataSource,
@@ -398,6 +401,32 @@ def create_index(
 
         return ContextGroundingIndex.model_validate(response.json())
 
+    @resource_override(resource_type="index")
+    @traced(name="contextgrounding_create_jit_index", run_type="uipath")
+    def create_jit_index(
+        self,
+        usage: str,
+        attachments: list[uuid.UUID],
+        folder_key: Optional[str] = None,
+        folder_path: Optional[str] = None,
+    ) -> ContextGroundingIndex:
+        """Create a new context jit grounding index."""
+        spec = self._create_jit_spec(
+            usage,
+            attachments,
+            folder_path=folder_path,
+            folder_key=folder_key,
+        )
+
+        response = self.request(
+            spec.method,
+            spec.endpoint,
+            json=spec.json,
+            headers=spec.headers,
+        )
+
+        return ContextGroundingIndex.model_validate(response.json())
+
     @resource_override(resource_type="index")
     @traced(name="contextgrounding_create_index", run_type="uipath")
     async def create_index_async(
@@ -1197,6 +1226,41 @@ def _create_spec(
             },
         )
 
+    def _create_jit_spec(
+        self,
+        usage: str,
+        attachments: list[uuid.UUID] = None,
+        folder_key: Optional[str] = None,
+        folder_path: Optional[str] = None,
+    ) -> RequestSpec:
+        """Create request spec for index creation."""
+        folder_key = self._resolve_folder_key(folder_key, folder_path)
+
+        data_source_dict = self._build_jit_data_source(attachments)
+
+        payload = CreateJitIndexPayload(
+            usage=usage,
+            data_source=data_source_dict,
+        )
+
+        return RequestSpec(
+            method="POST",
+            endpoint=Endpoint("/ecs_/v2/indexes/createephemeral"),
+            json=payload.model_dump(by_alias=True, exclude_none=True),
+            headers={
+                **header_folder(folder_key, None),
+            },
+        )
+
+    def _build_jit_data_source(self, attachments: list[uuid.UUID]) -> Dict[str, Any]:
+        data_source: AttachmentsDataSource
+        data_source = AttachmentsDataSource(attachments=attachments)
+        return data_source.model_dump(
+            by_alias=True,
+            exclude_none=True,
+            mode="json",
+        )
+
     def _build_data_source(self, source: SourceConfig) -> Dict[str, Any]:
         """Build data source configuration from typed source config.
 
diff --git a/src/uipath/platform/context_grounding/context_grounding_payloads.py b/src/uipath/platform/context_grounding/context_grounding_payloads.py
index 4b64778d7..1912610ab 100644
--- a/src/uipath/platform/context_grounding/context_grounding_payloads.py
+++ b/src/uipath/platform/context_grounding/context_grounding_payloads.py
@@ -1,6 +1,7 @@
 """Payload models for context grounding index creation and configuration."""
 
 import re
+import uuid
 from typing import Any, Dict, Literal, Optional, Union
 
 from pydantic import BaseModel, ConfigDict, Field, model_validator
@@ -82,6 +83,10 @@ class ConfluenceDataSource(DataSourceBase):
     space_id: str = Field(alias="spaceId", description="Space ID")
 
 
+class AttachmentsDataSource(BaseModel):
+    attachments: list[uuid.UUID] = Field(description="List of attachment ids")
+
+
 class Indexer(BaseModel):
     """Configuration for periodic indexing of data sources."""
 
@@ -136,6 +141,17 @@ class CreateIndexPayload(BaseModel):
     model_config = ConfigDict(populate_by_name=True)
 
 
+class CreateJitIndexPayload(BaseModel):
+    """ """
+
+    usage: str = Field(description="Index usage")
+    data_source: Dict[str, Any] = Field(
+        alias="dataSource", description="Data source configuration"
+    )
+
+    model_config = ConfigDict(populate_by_name=True)
+
+
 # user-facing source configuration models
 class BaseSourceConfig(BaseModel):
     """Base configuration for all source types."""