diff --git a/js/package.json b/js/package.json
index 6aa1c3a4c..0dbc6de86 100644
--- a/js/package.json
+++ b/js/package.json
@@ -1,6 +1,6 @@
 {
   "name": "langsmith",
-  "version": "0.0.51",
+  "version": "0.0.52",
   "description": "Client library to connect to the LangSmith LLM Tracing and Evaluation Platform.",
   "files": [
     "dist/",
diff --git a/js/src/schemas.ts b/js/src/schemas.ts
index 8840e14e2..7c48f29ad 100644
--- a/js/src/schemas.ts
+++ b/js/src/schemas.ts
@@ -1,7 +1,15 @@
 export interface TracerSession {
+  // The ID of the tenant, or organization
   tenant_id: string;
+  // The ID of the project (alias for session)
   id: string;
+  // The start time of the project
   start_time: number;
+  // The end time of the project
+  end_time?: number;
+  // A description of the project
+  description?: string;
+  // The name of the project
   name?: string;
 }
 
diff --git a/python/langsmith/schemas.py b/python/langsmith/schemas.py
index f2b7f188a..2b3fba966 100644
--- a/python/langsmith/schemas.py
+++ b/python/langsmith/schemas.py
@@ -379,6 +379,10 @@ class TracerSession(BaseModel):
     """The ID of the project."""
     start_time: datetime = Field(default_factory=datetime.utcnow)
     """The time the project was created."""
+    end_time: Optional[datetime] = None
+    """The time the project was ended."""
+    description: Optional[str] = None
+    """The description of the project."""
     name: Optional[str] = None
     """The name of the session."""
     extra: Optional[Dict[str, Any]] = None
@@ -400,6 +404,20 @@ def url(self) -> Optional[str]:
             return f"{self._host_url}/o/{self.tenant_id}/projects/p/{self.id}"
         return None
 
+    @property
+    def metadata(self) -> dict[str, Any]:
+        """Retrieve the metadata (if any)."""
+        if self.extra is None or "metadata" not in self.extra:
+            return {}
+        return self.extra["metadata"]
+
+    @property
+    def tags(self) -> List[str]:
+        """Retrieve the tags (if any)."""
+        if self.extra is None or "tags" not in self.extra:
+            return []
+        return self.extra["tags"]
+
 
 class TracerSessionResult(TracerSession):
     """TracerSession schema returned when reading a project
diff --git a/python/pyproject.toml b/python/pyproject.toml
index b0a5eec60..bef235d91 100644
--- a/python/pyproject.toml
+++ b/python/pyproject.toml
@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "langsmith"
-version = "0.0.71"
+version = "0.0.72"
 description = "Client library to connect to the LangSmith LLM Tracing and Evaluation Platform."
 authors = ["LangChain <support@langchain.dev>"]
 license = "MIT"