diff --git a/js/package.json b/js/package.json
index 4d4272981..5b98b0ee3 100644
--- a/js/package.json
+++ b/js/package.json
@@ -1,6 +1,6 @@
 {
   "name": "langsmith",
-  "version": "0.1.16",
+  "version": "0.1.17",
   "description": "Client library to connect to the LangSmith LLM Tracing and Evaluation Platform.",
   "packageManager": "yarn@1.22.19",
   "files": [
@@ -173,4 +173,4 @@
     },
     "./package.json": "./package.json"
   }
-}
\ No newline at end of file
+}
diff --git a/js/src/evaluation/evaluator.ts b/js/src/evaluation/evaluator.ts
index f258da389..f105c1e1e 100644
--- a/js/src/evaluation/evaluator.ts
+++ b/js/src/evaluation/evaluator.ts
@@ -1,5 +1,48 @@
 import { Example, Run, ScoreType, ValueType } from "../schemas.js";
 
+/**
+ * Represents a categorical class.
+ */
+export type Category = {
+  /**
+   * The value of the category.
+   */
+  value?: number;
+  /**
+   * The label of the category.
+   */
+  label: string;
+};
+
+/**
+ * Configuration for feedback.
+ */
+export type FeedbackConfig = {
+  /**
+   * The type of feedback.
+   * - "continuous": Feedback with a continuous numeric.
+   * - "categorical": Feedback with a categorical value (classes)
+   * - "freeform": Feedback with a freeform text value (notes).
+   */
+  type: "continuous" | "categorical" | "freeform";
+
+  /**
+   * The minimum value for continuous feedback.
+   */
+  min?: number;
+
+  /**
+   * The maximum value for continuous feedback.
+   */
+  max?: number;
+
+  /**
+   * The categories for categorical feedback.
+   * Each category can be a string or an object with additional properties.
+   */
+  categories?: (Category | Record<string, unknown>)[];
+};
+
 /**
  * Represents the result of an evaluation.
  */
@@ -39,6 +82,13 @@ export type EvaluationResult = {
    * the root of the trace.
    */
   targetRunId?: string;
+
+  /**
+   * The feedback config associated with the evaluation result.
+   * If set, this will be used to define how a feedback key
+   * should be interpreted.
+   */
+  feedbackConfig?: FeedbackConfig;
 };
 
 export interface RunEvaluator {
diff --git a/js/src/index.ts b/js/src/index.ts
index 4a61115ee..3bb7c706d 100644
--- a/js/src/index.ts
+++ b/js/src/index.ts
@@ -11,4 +11,4 @@ export type {
 export { RunTree, type RunTreeConfig } from "./run_trees.js";
 
 // Update using yarn bump-version
-export const __version__ = "0.1.16";
+export const __version__ = "0.1.17";
diff --git a/python/langsmith/client.py b/python/langsmith/client.py
index b3072641e..f0b3dd20d 100644
--- a/python/langsmith/client.py
+++ b/python/langsmith/client.py
@@ -3304,6 +3304,9 @@ def _log_evaluation_feedback(
                 correction=res.correction,
                 source_info=source_info_,
                 source_run_id=res.source_run_id,
+                feedback_config=cast(
+                    Optional[ls_schemas.FeedbackConfig], res.feedback_config
+                ),
                 feedback_source_type=ls_schemas.FeedbackSourceType.MODEL,
                 project_id=project_id,
             )
diff --git a/python/langsmith/evaluation/evaluator.py b/python/langsmith/evaluation/evaluator.py
index 361274928..f9f13cb2b 100644
--- a/python/langsmith/evaluation/evaluator.py
+++ b/python/langsmith/evaluation/evaluator.py
@@ -3,7 +3,9 @@
 import asyncio
 import uuid
 from abc import abstractmethod
-from typing import Any, Callable, Dict, List, Optional, TypedDict, Union, cast
+from typing import Any, Callable, Dict, List, Literal, Optional, Union, cast
+
+from typing_extensions import TypedDict
 
 try:
     from pydantic.v1 import BaseModel, Field, ValidationError  # type: ignore[import]
@@ -15,6 +17,30 @@
 from langsmith.schemas import SCORE_TYPE, VALUE_TYPE, Example, Run
 
 
+class Category(TypedDict):
+    """A category for categorical feedback."""
+
+    value: Optional[Union[float, int]]
+    """The numeric score/ordinal corresponding to this category."""
+    label: str
+    """The label for this category."""
+
+
+class FeedbackConfig(TypedDict, total=False):
+    """Configuration to define a type of feedback.
+
+    Applied on on the first creation of a feedback_key.
+    """
+
+    type: Literal["continuous", "categorical", "freeform"]
+    """The type of feedback."""
+    min: Optional[Union[float, int]]
+    """The minimum permitted value (if continuous type)."""
+    max: Optional[Union[float, int]]
+    """The maximum value permitted value (if continuous type)."""
+    categories: Optional[List[Union[Category, dict]]]
+
+
 class EvaluationResult(BaseModel):
     """Evaluation result."""
 
@@ -30,6 +56,8 @@ class EvaluationResult(BaseModel):
     """What the correct value should be, if applicable."""
     evaluator_info: Dict = Field(default_factory=dict)
     """Additional information about the evaluator."""
+    feedback_config: Optional[Union[FeedbackConfig, dict]] = None
+    """The configuration used to generate this feedback."""
     source_run_id: Optional[Union[uuid.UUID, str]] = None
     """The ID of the trace of the evaluator itself."""
     target_run_id: Optional[Union[uuid.UUID, str]] = None
diff --git a/python/pyproject.toml b/python/pyproject.toml
index 9ebcfd02c..4175beaf5 100644
--- a/python/pyproject.toml
+++ b/python/pyproject.toml
@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "langsmith"
-version = "0.1.42"
+version = "0.1.44"
 description = "Client library to connect to the LangSmith LLM Tracing and Evaluation Platform."
 authors = ["LangChain <support@langchain.dev>"]
 license = "MIT"