diff --git a/docs/src/pages/docs/reference/rag/pg.mdx b/docs/src/pages/docs/reference/rag/pg.mdx
index 0f0543f759..685a2d1542 100644
--- a/docs/src/pages/docs/reference/rag/pg.mdx
+++ b/docs/src/pages/docs/reference/rag/pg.mdx
@@ -43,6 +43,74 @@ It provides robust vector similarity search capabilities within your existing Po
       defaultValue: "cosine",
       description: "Distance metric for similarity search",
     },
+    {
+      name: "indexConfig",
+      type: "IndexConfig",
+      isOptional: true,
+      description: "Index configuration",
+    },
+  ]}
+/>
+
+#### IndexConfig
+
+<PropertiesTable
+  content={[
+    {
+      name: "type",
+      type: "'flat' | 'hnsw' | 'ivfflat'",
+      description: "Index type",
+    },
+    {
+      name: "ivf",
+      type: "IVFConfig",
+      isOptional: true,
+      description: "IVF configuration",
+      properties: [
+        {
+          type: "object",
+          parameters: [
+            {
+              name: "lists",
+              type: "number",
+              description: "Number of lists (default: 100)",
+              isOptional: true,
+            },
+            {
+              name: "probes",
+              type: "number",
+              description: "Number of probes (default: 1)",
+              isOptional: true,
+            },
+          ],
+        },
+      ],
+    },
+    {
+      name: "hnsw",
+      type: "HNSWConfig",
+      isOptional: true,
+      description: "HNSW configuration",
+      properties: [
+        {
+          type: "object",
+          parameters: [
+            {
+              name: "m",
+              type: "number",
+              description: "Max number of connections (default: 16)",
+              isOptional: true,
+            },
+            {
+              name: "efConstruction",
+              type: "number",
+              description: "Build-time complexity (default: 64)",
+              isOptional: true,
+            },
+          ],
+        },
+      ]
+    },
   ]}
 />
 
@@ -138,10 +206,17 @@ Returns an array of index names as strings.
 Returns:
 
 ```typescript copy
-interface IndexStats {
+interface PGIndexStats {
   dimension: number;
   count: number;
   metric: "cosine" | "euclidean" | "dotproduct";
+  type: "flat" | "hnsw" | "ivfflat";
+  config: {
+    m?: number;
+    efConstruction?: number;
+    lists?: number;
+    probes?: number;
+  };
 }
 ```
 
diff --git a/stores/pg/README.md b/stores/pg/README.md
index 1d77861302..670fb7a521 100644
--- a/stores/pg/README.md
+++ b/stores/pg/README.md
@@ -56,7 +56,7 @@ const store = new PostgresStore({
   port: 5432,
   database: 'mastra',
   user: 'postgres',
-  password: 'postgres'
+  password: 'postgres',
 });
 
 // Create a thread
@@ -64,17 +64,19 @@ await store.saveThread({
   id: 'thread-123',
   resourceId: 'resource-456',
   title: 'My Thread',
-  metadata: { key: 'value' }
+  metadata: { key: 'value' },
 });
 
 // Add messages to thread
-await store.saveMessages([{
-  id: 'msg-789',
-  threadId: 'thread-123',
-  role: 'user',
-  type: 'text',
-  content: [{ type: 'text', text: 'Hello' }]
-}]);
+await store.saveMessages([
+  {
+    id: 'msg-789',
+    threadId: 'thread-123',
+    role: 'user',
+    type: 'text',
+    content: [{ type: 'text', text: 'Hello' }],
+  },
+]);
 
 // Query threads and messages
 const savedThread = await store.getThread('thread-123');
@@ -97,14 +99,18 @@ Connection pool settings:
 ## Features
 
 ### Vector Store Features
+
 - Vector similarity search with cosine, euclidean, and dot product metrics
 - Advanced metadata filtering with MongoDB-like query syntax
 - Minimum score threshold for queries
 - Automatic UUID generation for vectors
 - Table management (create, list, describe, delete, truncate)
-- Uses pgvector's IVFFLAT indexing with 100 lists
+- Uses pgvector's IVFFLAT indexing with 100 lists by default
+- Supports HNSW indexing with configurable parameters
+- Supports flat indexing
 
 ### Storage Features
+
 - Thread and message storage with JSON support
 - Atomic transactions for data consistency
 - Efficient batch operations
diff --git a/stores/pg/src/vector/types.ts b/stores/pg/src/vector/types.ts
index 4c3d185569..0f225f78fe 100644
--- a/stores/pg/src/vector/types.ts
+++ b/stores/pg/src/vector/types.ts
@@ -8,7 +8,6 @@ interface IVFConfig {
 interface HNSWConfig {
   m?: number; // Max number of connections (default: 16)
   efConstruction?: number; // Build-time complexity (default: 64)
-  ef?: number; // Search-time complexity (default: 40)
 }
 
 export interface IndexConfig {