diff --git a/langfuse/api/reference.md b/langfuse/api/reference.md
index 6598e7cc4..759ddbdec 100644
--- a/langfuse/api/reference.md
+++ b/langfuse/api/reference.md
@@ -3635,7 +3635,7 @@ Use the `fields` parameter to control which observation fields are returned:
 - `basic` - name, level, statusMessage, version, environment, bookmarked, public, userId, sessionId
 - `time` - completionStartTime, createdAt, updatedAt
 - `io` - input, output
-- `metadata` - metadata
+- `metadata` - metadata (truncated to 200 chars by default, use `expandMetadata` to get full values)
 - `model` - providedModelName, internalModelId, modelParameters
 - `usage` - usageDetails, costDetails, totalCost
 - `prompt` - promptId, promptName, promptVersion
@@ -3699,6 +3699,19 @@ Example: "basic,usage,model"
 <dl>
 <dd>
 
+**expand_metadata:** `typing.Optional[str]` 
+
+Comma-separated list of metadata keys to return non-truncated.
+By default, metadata values over 200 characters are truncated.
+Use this parameter to retrieve full values for specific keys.
+Example: "key1,key2"
+    
+</dd>
+</dl>
+
+<dl>
+<dd>
+
 **limit:** `typing.Optional[int]` — Number of items to return per page. Maximum 1000, default 50.
     
 </dd>
diff --git a/langfuse/api/resources/observations_v_2/client.py b/langfuse/api/resources/observations_v_2/client.py
index e6796fd46..ea9599c69 100644
--- a/langfuse/api/resources/observations_v_2/client.py
+++ b/langfuse/api/resources/observations_v_2/client.py
@@ -26,6 +26,7 @@ def get_many(
         self,
         *,
         fields: typing.Optional[str] = None,
+        expand_metadata: typing.Optional[str] = None,
         limit: typing.Optional[int] = None,
         cursor: typing.Optional[str] = None,
         parse_io_as_json: typing.Optional[bool] = None,
@@ -56,7 +57,7 @@ def get_many(
         - `basic` - name, level, statusMessage, version, environment, bookmarked, public, userId, sessionId
         - `time` - completionStartTime, createdAt, updatedAt
         - `io` - input, output
-        - `metadata` - metadata
+        - `metadata` - metadata (truncated to 200 chars by default, use `expandMetadata` to get full values)
         - `model` - providedModelName, internalModelId, modelParameters
         - `usage` - usageDetails, costDetails, totalCost
         - `prompt` - promptId, promptName, promptVersion
@@ -76,6 +77,12 @@ def get_many(
             If not specified, `core` and `basic` field groups are returned.
             Example: "basic,usage,model"
 
+        expand_metadata : typing.Optional[str]
+            Comma-separated list of metadata keys to return non-truncated.
+            By default, metadata values over 200 characters are truncated.
+            Use this parameter to retrieve full values for specific keys.
+            Example: "key1,key2"
+
         limit : typing.Optional[int]
             Number of items to return per page. Maximum 1000, default 50.
 
@@ -234,6 +241,7 @@ def get_many(
             method="GET",
             params={
                 "fields": fields,
+                "expandMetadata": expand_metadata,
                 "limit": limit,
                 "cursor": cursor,
                 "parseIoAsJson": parse_io_as_json,
@@ -292,6 +300,7 @@ async def get_many(
         self,
         *,
         fields: typing.Optional[str] = None,
+        expand_metadata: typing.Optional[str] = None,
         limit: typing.Optional[int] = None,
         cursor: typing.Optional[str] = None,
         parse_io_as_json: typing.Optional[bool] = None,
@@ -322,7 +331,7 @@ async def get_many(
         - `basic` - name, level, statusMessage, version, environment, bookmarked, public, userId, sessionId
         - `time` - completionStartTime, createdAt, updatedAt
         - `io` - input, output
-        - `metadata` - metadata
+        - `metadata` - metadata (truncated to 200 chars by default, use `expandMetadata` to get full values)
         - `model` - providedModelName, internalModelId, modelParameters
         - `usage` - usageDetails, costDetails, totalCost
         - `prompt` - promptId, promptName, promptVersion
@@ -342,6 +351,12 @@ async def get_many(
             If not specified, `core` and `basic` field groups are returned.
             Example: "basic,usage,model"
 
+        expand_metadata : typing.Optional[str]
+            Comma-separated list of metadata keys to return non-truncated.
+            By default, metadata values over 200 characters are truncated.
+            Use this parameter to retrieve full values for specific keys.
+            Example: "key1,key2"
+
         limit : typing.Optional[int]
             Number of items to return per page. Maximum 1000, default 50.
 
@@ -508,6 +523,7 @@ async def main() -> None:
             method="GET",
             params={
                 "fields": fields,
+                "expandMetadata": expand_metadata,
                 "limit": limit,
                 "cursor": cursor,
                 "parseIoAsJson": parse_io_as_json,