diff --git a/apps/webapp/app/services/graphModels/episode.ts b/apps/webapp/app/services/graphModels/episode.ts
index acf59a5..30c5de2 100644
--- a/apps/webapp/app/services/graphModels/episode.ts
+++ b/apps/webapp/app/services/graphModels/episode.ts
@@ -195,7 +195,8 @@ export async function deleteEpisodeWithRelatedNodes(params: {
 
   if (!episodeCheck || episodeCheck.length === 0) {
     return {
-      episodeDeleted: false,
+      // Return true if no episode exist
+      episodeDeleted: true,
       statementsDeleted: 0,
       entitiesDeleted: 0,
       factsDeleted: 0,
diff --git a/apps/webapp/app/utils/mcp/memory.ts b/apps/webapp/app/utils/mcp/memory.ts
index 5808c70..9fc7fec 100644
--- a/apps/webapp/app/utils/mcp/memory.ts
+++ b/apps/webapp/app/utils/mcp/memory.ts
@@ -17,15 +17,18 @@ const SearchParamsSchema = {
     },
     validAt: {
       type: "string",
-      description: "The valid at time in ISO format",
+      description:
+        "Point-in-time reference for temporal queries (ISO format). Returns facts valid at this timestamp. Defaults to current time if not specified.",
     },
     startTime: {
       type: "string",
-      description: "The start time in ISO format",
+      description:
+        "Filter memories created/valid from this time onwards (ISO format). Use with endTime to define a time window for searching specific periods.",
     },
     endTime: {
       type: "string",
-      description: "The end time in ISO format",
+      description:
+        "Upper bound for temporal filtering (ISO format). Combined with startTime creates a time range. Defaults to current time if not specified.",
     },
     spaceIds: {
       type: "array",
@@ -59,7 +62,7 @@ export const memoryTools = [
   {
     name: "memory_search",
     description:
-      "AUTOMATICALLY invoke for memory searches. Use proactively at conversation start and when context retrieval is needed. Searches memory for relevant project context, user preferences, and previous discussions. **Purpose**: Retrieve previously stored information based on query terms. **Required**: Provide a search query in third person perspective. **Returns**: matching memory entries in JSON format",
+      "AUTOMATICALLY invoke for memory searches. Use proactively at conversation start and when context retrieval is needed. Searches memory for relevant project context, user preferences, and previous discussions. **Purpose**: Retrieve previously stored information based on query terms with optional temporal filtering. **Required**: Provide a search query in third person perspective. **Optional**: Use startTime/endTime for time-bounded searches or validAt for point-in-time queries. **Returns**: matching memory entries in JSON format",
     inputSchema: SearchParamsSchema,
   },
   {