diff --git a/docs/_static/llama-stack-spec.html b/docs/_static/llama-stack-spec.html
index d6ee9334e..4c7bebd8f 100644
--- a/docs/_static/llama-stack-spec.html
+++ b/docs/_static/llama-stack-spec.html
@@ -9446,7 +9446,7 @@
                             "eval/question-answer",
                             "eval/messages-answer"
                         ],
-                        "description": "The purpose of the dataset. One of - \"post-training/messages\": The dataset contains a messages column with list of messages for post-training. - \"eval/question-answer\": The dataset contains a question column and an answer column for evaluation. - \"eval/messages-answer\": The dataset contains a messages column with list of messages and an answer column for evaluation."
+                        "description": "The purpose of the dataset. One of - \"post-training/messages\": The dataset contains a messages column with list of messages for post-training. { \"messages\": [ {\"role\": \"user\", \"content\": \"Hello, world!\"}, {\"role\": \"assistant\", \"content\": \"Hello, world!\"}, ] } - \"eval/question-answer\": The dataset contains a question column and an answer column for evaluation. { \"question\": \"What is the capital of France?\", \"answer\": \"Paris\" } - \"eval/messages-answer\": The dataset contains a messages column with list of messages and an answer column for evaluation. { \"messages\": [ {\"role\": \"user\", \"content\": \"Hello, my name is John Doe.\"}, {\"role\": \"assistant\", \"content\": \"Hello, John Doe. How can I help you today?\"}, {\"role\": \"user\", \"content\": \"What's my name?\"}, ], \"answer\": \"John Doe\" }"
                     },
                     "source": {
                         "$ref": "#/components/schemas/DataSource",
diff --git a/docs/_static/llama-stack-spec.yaml b/docs/_static/llama-stack-spec.yaml
index 4a204f44d..4d2398a28 100644
--- a/docs/_static/llama-stack-spec.yaml
+++ b/docs/_static/llama-stack-spec.yaml
@@ -6399,10 +6399,16 @@ components:
             - eval/messages-answer
           description: >-
             The purpose of the dataset. One of - "post-training/messages": The dataset
-            contains a messages column with list of messages for post-training. -
-            "eval/question-answer": The dataset contains a question column and an
-            answer column for evaluation. - "eval/messages-answer": The dataset contains
-            a messages column with list of messages and an answer column for evaluation.
+            contains a messages column with list of messages for post-training. {
+            "messages": [ {"role": "user", "content": "Hello, world!"}, {"role": "assistant",
+            "content": "Hello, world!"}, ] } - "eval/question-answer": The dataset
+            contains a question column and an answer column for evaluation. { "question":
+            "What is the capital of France?", "answer": "Paris" } - "eval/messages-answer":
+            The dataset contains a messages column with list of messages and an answer
+            column for evaluation. { "messages": [ {"role": "user", "content": "Hello,
+            my name is John Doe."}, {"role": "assistant", "content": "Hello, John
+            Doe. How can I help you today?"}, {"role": "user", "content": "What's
+            my name?"}, ], "answer": "John Doe" }
         source:
           $ref: '#/components/schemas/DataSource'
           description: >-
diff --git a/llama_stack/apis/datasets/datasets.py b/llama_stack/apis/datasets/datasets.py
index 711e3289c..e1285ef9a 100644
--- a/llama_stack/apis/datasets/datasets.py
+++ b/llama_stack/apis/datasets/datasets.py
@@ -160,8 +160,26 @@ class Datasets(Protocol):
 
         :param purpose: The purpose of the dataset. One of
             - "post-training/messages": The dataset contains a messages column with list of messages for post-training.
+                {
+                    "messages": [
+                        {"role": "user", "content": "Hello, world!"},
+                        {"role": "assistant", "content": "Hello, world!"},
+                    ]
+                }
             - "eval/question-answer": The dataset contains a question column and an answer column for evaluation.
+                {
+                    "question": "What is the capital of France?",
+                    "answer": "Paris"
+                }
             - "eval/messages-answer": The dataset contains a messages column with list of messages and an answer column for evaluation.
+                {
+                    "messages": [
+                        {"role": "user", "content": "Hello, my name is John Doe."},
+                        {"role": "assistant", "content": "Hello, John Doe. How can I help you today?"},
+                        {"role": "user", "content": "What's my name?"},
+                    ],
+                    "answer": "John Doe"
+                }
         :param source: The data source of the dataset. Examples:
            - {
                "type": "uri",