diff --git a/python/src/aiconfig/schema.py b/python/src/aiconfig/schema.py
index 9ad44280e..d601cab31 100644
--- a/python/src/aiconfig/schema.py
+++ b/python/src/aiconfig/schema.py
@@ -20,6 +20,27 @@ class OutputData(BaseModel):
     value: str
 
 
+class FunctionCallData(BaseModel):
+    """
+    Function call data reprsenting a single function call
+    """
+
+    name: str
+    arguments: str
+
+    class Config:
+        extra = "allow"
+
+
+class FunctionCall(BaseModel):
+    """
+    Standard format for data representing function call(s)
+    """
+
+    kind: Literal["function"]
+    value: List[FunctionCallData]
+
+
 class ExecuteResult(BaseModel):
     """
     ExecuteResult represents the result of executing a prompt.
diff --git a/typescript/types.ts b/typescript/types.ts
index 7fbd908c4..86d192c10 100644
--- a/typescript/types.ts
+++ b/typescript/types.ts
@@ -196,6 +196,14 @@ export type ExecuteResult = {
     | {
         kind: "string" | "file_uri" | "base64";
         value: string;
+      }
+    | {
+        kind: "function";
+        value: {
+          name: string;
+          arguments: string;
+          [k: string]: any;
+        }[];
       };
   /**
    * The MIME type of the result. If not specified, the MIME type will be assumed to be plain text.