diff --git a/actions/setup/js/add_labels.cjs b/actions/setup/js/add_labels.cjs
index 61d30cbfd5..20e86f6505 100644
--- a/actions/setup/js/add_labels.cjs
+++ b/actions/setup/js/add_labels.cjs
@@ -5,7 +5,7 @@ const { processSafeOutput } = require("./safe_output_processor.cjs");
 const { validateLabels } = require("./safe_output_validator.cjs");
 const { getErrorMessage } = require("./error_helpers.cjs");
 
-async function main(config = {}) {
+async function main(handlerConfig = {}) {
   // Use shared processor for common steps
   const result = await processSafeOutput(
     {
@@ -17,9 +17,9 @@ async function main(config = {}) {
       supportsIssue: true,
       envVars: {
         // Config values now passed via config object, not env vars
-        allowed: null,
-        maxCount: null,
-        target: null,
+        allowed: undefined,
+        maxCount: undefined,
+        target: undefined,
       },
     },
     {
@@ -38,7 +38,7 @@ async function main(config = {}) {
         return content;
       },
     },
-    config // Pass handler config as third parameter
+    handlerConfig // Pass handler config as third parameter
   );
 
   if (!result.success) {
diff --git a/actions/setup/js/safe_output_handler_manager.cjs b/actions/setup/js/safe_output_handler_manager.cjs
index b0b9848e34..5305cf759d 100644
--- a/actions/setup/js/safe_output_handler_manager.cjs
+++ b/actions/setup/js/safe_output_handler_manager.cjs
@@ -97,7 +97,7 @@ async function loadHandlers(config) {
  *
  * @param {Map<string, Function>} messageHandlers - Map of message handler functions
  * @param {Array<Object>} messages - Array of safe output messages
- * @returns {Promise<{success: boolean, results: Array<any>, temporaryIdMap: Map}>}
+ * @returns {Promise<{success: boolean, results: Array<any>, temporaryIdMap: Object}>}
  */
 async function processMessages(messageHandlers, messages) {
   const results = [];
diff --git a/actions/setup/js/update_runner.cjs b/actions/setup/js/update_runner.cjs
index cc1df2563b..8103002662 100644
--- a/actions/setup/js/update_runner.cjs
+++ b/actions/setup/js/update_runner.cjs
@@ -30,8 +30,9 @@ const { getErrorMessage } = require("./error_helpers.cjs");
  * @property {boolean} supportsStatus - Whether this type supports status updates
  * @property {boolean} supportsOperation - Whether this type supports operation (append/prepend/replace)
  * @property {(item: any, index: number) => string} renderStagedItem - Function to render item for staged preview
- * @property {(github: any, context: any, targetNumber: number, updateData: any) => Promise<any>} executeUpdate - Function to execute the update API call
+ * @property {(github: any, context: any, targetNumber: number, updateData: any, handlerConfig?: any) => Promise<any>} executeUpdate - Function to execute the update API call
  * @property {(result: any) => string} getSummaryLine - Function to generate summary line for an updated item
+ * @property {Object} [handlerConfig] - Optional handler configuration passed from safe output processor
  */
 
 /**