diff --git a/lambda-events/src/event/bedrock_agent_runtime/mod.rs b/lambda-events/src/event/bedrock_agent_runtime/mod.rs
index 65ab4a9d..836d2f95 100644
--- a/lambda-events/src/event/bedrock_agent_runtime/mod.rs
+++ b/lambda-events/src/event/bedrock_agent_runtime/mod.rs
@@ -20,9 +20,11 @@ pub struct AgentEvent {
     /// The method of the API operation, as defined in the OpenAPI schema.
     pub http_method: String,
     /// Contains a list of objects. Each object contains the name, type, and value of a parameter in the API operation, as defined in the OpenAPI schema.
-    pub parameters: Vec<Parameter>,
+    #[serde(default, skip_serializing_if = "Option::is_none")]
+    pub parameters: Option<Vec<Parameter>>,
     /// Contains the request body and its properties, as defined in the OpenAPI schema.
-    pub request_body: RequestBody,
+    #[serde(default, skip_serializing_if = "Option::is_none")]
+    pub request_body: Option<RequestBody>,
     /// Contains session attributes and their values.
     pub session_attributes: HashMap<String, String>,
     /// Contains prompt attributes and their values.
@@ -91,4 +93,22 @@ mod tests {
         let reparsed: AgentEvent = serde_json::from_slice(&output.as_bytes()).unwrap();
         assert_eq!(parsed, reparsed);
     }
+    #[test]
+    #[cfg(feature = "bedrock-agent-runtime")]
+    fn example_bedrock_agent_runtime_event_without_parameters() {
+        let data = include!("../../fixtures/example-bedrock-agent-runtime-event-without-parameters.json");
+        let parsed: AgentEvent = serde_json::from_str(&data).unwrap();
+        let output: String = serde_json::to_string(&parsed).unwrap();
+        let reparsed: AgentEvent = serde_json::from_slice(&output.as_bytes()).unwrap();
+        assert_eq!(parsed, reparsed);
+    }
+    #[test]
+    #[cfg(feature = "bedrock-agent-runtime")]
+    fn example_bedrock_agent_runtime_event_without_request_body() {
+        let data = include!("../../fixtures/example-bedrock-agent-runtime-event-without-request-body.json");
+        let parsed: AgentEvent = serde_json::from_str(&data).unwrap();
+        let output: String = serde_json::to_string(&parsed).unwrap();
+        let reparsed: AgentEvent = serde_json::from_slice(&output.as_bytes()).unwrap();
+        assert_eq!(parsed, reparsed);
+    }
 }
diff --git a/lambda-events/src/fixtures/example-bedrock-agent-runtime-event-without-parameters.json b/lambda-events/src/fixtures/example-bedrock-agent-runtime-event-without-parameters.json
new file mode 100644
index 00000000..d41d9ee1
--- /dev/null
+++ b/lambda-events/src/fixtures/example-bedrock-agent-runtime-event-without-parameters.json
@@ -0,0 +1,33 @@
+{
+  "messageVersion": "1.0",
+  "agent": {
+    "name": "AgentName",
+    "id": "AgentID",
+    "alias": "AgentAlias",
+    "version": "AgentVersion"
+  },
+  "inputText": "InputText",
+  "sessionId": "SessionID",
+  "actionGroup": "ActionGroup",
+  "apiPath": "/api/path",
+  "httpMethod": "POST",
+  "requestBody": {
+    "content": {
+      "application/json": {
+        "properties": [
+          {
+            "name": "prop1",
+            "type": "string",
+            "value": "value1"
+          }
+        ]
+      }
+    }
+  },
+  "sessionAttributes": {
+    "attr1": "value1"
+  },
+  "promptSessionAttributes": {
+    "promptAttr1": "value1"
+  }
+}
\ No newline at end of file
diff --git a/lambda-events/src/fixtures/example-bedrock-agent-runtime-event-without-request-body.json b/lambda-events/src/fixtures/example-bedrock-agent-runtime-event-without-request-body.json
new file mode 100644
index 00000000..2ca5aa9a
--- /dev/null
+++ b/lambda-events/src/fixtures/example-bedrock-agent-runtime-event-without-request-body.json
@@ -0,0 +1,27 @@
+{
+  "messageVersion": "1.0",
+  "agent": {
+    "name": "AgentName",
+    "id": "AgentID",
+    "alias": "AgentAlias",
+    "version": "AgentVersion"
+  },
+  "inputText": "InputText",
+  "sessionId": "SessionID",
+  "actionGroup": "ActionGroup",
+  "apiPath": "/api/path",
+  "httpMethod": "POST",
+  "parameters": [
+    {
+      "name": "param1",
+      "type": "string",
+      "value": "value1"
+    }
+  ],
+  "sessionAttributes": {
+    "attr1": "value1"
+  },
+  "promptSessionAttributes": {
+    "promptAttr1": "value1"
+  }
+}
\ No newline at end of file