diff --git a/CHANGELOG.md b/CHANGELOG.md
index b5b2f575..360b3061 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -45,6 +45,7 @@ Inspired from [Keep a Changelog](https://keepachangelog.com/en/1.0.0/)
 - Added `GET /_plugins/_ml/connectors/{connector_id}`, `_search`, `POST /_plugins/_ml/connectors/_search`, and `PUT /_plugins/_ml/connectors/{connector_id}` ([#764](https://github.com/opensearch-project/opensearch-api-specification/pull/764))
 - Added the ability to skip an individual chapter test ([#765](https://github.com/opensearch-project/opensearch-api-specification/pull/765))
 - Added uploading of test spec logs ([#767](https://github.com/opensearch-project/opensearch-api-specification/pull/767))
+- Added `POST /_plugins/_ml/memory`, `PUT /_plugins/_ml/memory/{memory_id}`, `GET /_plugins/_ml/memory`, `GET /_plugins/_ml/memory/{memory_id}`, `_search`, `POST /_plugins/_ml/memory/_search`, and `DELETE /_plugins/_ml/memory/{memory_id}` ([#771](https://github.com/opensearch-project/opensearch-api-specification/pull/771))
 
 ### Removed
 - Removed unsupported `_common.mapping:SourceField`'s `mode` field and associated `_common.mapping:SourceFieldMode` enum ([#652](https://github.com/opensearch-project/opensearch-api-specification/pull/652))
diff --git a/spec/namespaces/ml.yaml b/spec/namespaces/ml.yaml
index d9166bfe..262de7fc 100644
--- a/spec/namespaces/ml.yaml
+++ b/spec/namespaces/ml.yaml
@@ -255,6 +255,83 @@ paths:
       responses:
         '200':
           $ref: '#/components/responses/ml.delete_agent@200'
+  /_plugins/_ml/memory:
+    get:
+      operationId: ml.get_memory.0
+      x-operation-group: ml.get_memory
+      x-version-added: '2.12'
+      description: Get a memory.
+      requestBody:
+        $ref: '#/components/requestBodies/ml.get_memory'
+      responses:
+        '200':
+          $ref: '#/components/responses/ml.get_memory@200'
+    post:
+      operationId: ml.create_memory.0
+      x-operation-group: ml.create_memory
+      x-version-added: '2.12'
+      description: Create a memory.
+      requestBody:
+        $ref: '#/components/requestBodies/ml.create_memory'
+      responses:
+        '200':
+          $ref: '#/components/responses/ml.create_memory@200'
+  /_plugins/_ml/memory/{memory_id}:
+    get:
+      operationId: ml.get_memory.1
+      x-operation-group: ml.get_memory
+      x-version-added: '2.12'
+      description: Get a memory.
+      requestBody:
+        $ref: '#/components/requestBodies/ml.get_memory'
+      parameters:
+        - $ref: '#/components/parameters/ml.get_memory::path.memory_id'
+      responses:
+        '200':
+          $ref: '#/components/responses/ml.get_memory@200'
+    put:
+      operationId: ml.update_memory.0
+      x-operation-group: ml.update_memory
+      x-version-added: '2.12'
+      description: Update a memory.
+      parameters:
+        - $ref: '#/components/parameters/ml.update_memory::path.memory_id'
+      requestBody:
+        $ref: '#/components/requestBodies/ml.update_memory'
+      responses:
+        '200':
+          $ref: '#/components/responses/ml.update_memory@200'
+    delete:
+      operationId: ml.delete_memory.0
+      x-operation-group: ml.delete_memory
+      x-version-added: '2.12'
+      description: Delete a memory.
+      parameters:
+        - $ref: '#/components/parameters/ml.delete_memory::path.memory_id'
+      responses:
+        '200':
+          $ref: '#/components/responses/ml.delete_memory@200'
+  /_plugins/_ml/memory/_search:
+    get:
+      operationId: ml.search_memory.0
+      x-operation-group: ml.search_memory
+      x-version-added: '2.12'
+      description: Search memory.
+      requestBody:
+        $ref: '#/components/requestBodies/ml.search_memory'
+      responses:
+        '200':
+          $ref: '#/components/responses/ml.search_memory@200'
+    post:
+      operationId: ml.search_memory.1
+      x-operation-group: ml.search_memory
+      x-version-added: '2.12'
+      description: Search memory.
+      requestBody:
+        $ref: '#/components/requestBodies/ml.search_memory'
+      responses:
+        '200':
+          $ref: '#/components/responses/ml.search_memory@200'
 components:
   requestBodies:
     ml.register_model_group:
@@ -547,6 +624,53 @@ components:
             required:
               - name
               - type
+    ml.get_memory:
+      content:
+        application/json:
+          schema:
+            type: object
+            properties:
+              max_results:
+                type: integer
+                format: int64
+                description: The maximum number of results to return.
+              next_token:
+                type: integer
+                format: int64
+                description: The index of the first memory in the sorted list of memories to return.
+    ml.create_memory:
+      content:
+        application/json:
+          schema:
+            type: object
+            properties:
+              name:
+                $ref: '../schemas/_common.yaml#/components/schemas/Name'
+    ml.update_memory:
+      content:
+        application/json:
+          schema:
+            type: object
+            properties:
+              name:
+                $ref: '../schemas/_common.yaml#/components/schemas/Name'
+    ml.search_memory:
+      content:
+        application/json:
+          schema:
+            type: object
+            properties:
+              query:
+                $ref: '../schemas/ml._common.yaml#/components/schemas/Query'
+              size:
+                type: integer
+                format: int64
+                description: The number of memories to return.
+              sort:
+                type: array
+                items:
+                  $ref: '../schemas/ml._common.yaml#/components/schemas/SortMemory'
+                description: The sort order.
   responses:
     ml.register_model_group@200:
       content:
@@ -682,6 +806,40 @@ components:
         application/json:
           schema:
             $ref: '../schemas/_common.yaml#/components/schemas/WriteResponseBase'
+    ml.get_memory@200:
+      content:
+        application/json:
+          schema:
+            $ref: '../schemas/ml._common.yaml#/components/schemas/GetMemoryResponse'
+    ml.create_memory@200:
+      content:
+        application/json:
+          schema:
+            type: object
+            properties:
+              memory_id:
+                type: string
+    ml.update_memory@200:
+      content:
+        application/json:
+          schema:
+            $ref: '../schemas/_common.yaml#/components/schemas/WriteResponseBase'
+    ml.delete_memory@200:
+      content:
+        application/json:
+          schema:
+            type: object
+            properties:
+              success:
+                type: boolean
+                description: Whether the memory was deleted successfully.
+            required:
+              - success
+    ml.search_memory@200:
+      content:
+        application/json:
+          schema:
+            $ref: '../schemas/ml._common.yaml#/components/schemas/SearchMemoryResponse'
   parameters:
     ml.get_model_group::path.model_group_id:
       name: model_group_id
@@ -777,5 +935,23 @@ components:
       name: task_id
       in: path
       required: true
+      schema:
+        type: string
+    ml.get_memory::path.memory_id:
+      name: memory_id
+      in: path
+      required: true
+      schema:
+        type: string
+    ml.update_memory::path.memory_id:
+      name: memory_id
+      in: path
+      required: true
+      schema:
+        type: string
+    ml.delete_memory::path.memory_id:
+      name: memory_id
+      in: path
+      required: true
       schema:
         type: string
\ No newline at end of file
diff --git a/spec/schemas/ml._common.yaml b/spec/schemas/ml._common.yaml
index 7a38327f..213ffd63 100644
--- a/spec/schemas/ml._common.yaml
+++ b/spec/schemas/ml._common.yaml
@@ -74,6 +74,12 @@ components:
           $ref: '#/components/schemas/Source'
         model_id:
           $ref: '_common.yaml#/components/schemas/Name'
+        sort:
+          type: array
+          items:
+            type: number
+            format: float
+          description: The sort values.
       required:
         - _score
     Source:
@@ -149,8 +155,7 @@ components:
           format: int64
           description: The auto redeploy retry times.
         name:
-          type: string
-          description: The model name.
+          $ref: '_common.yaml#/components/schemas/Name'
         connector_id:
           type: string
           description: The connector ID.
@@ -203,6 +208,22 @@ components:
           type: array
           items:
             $ref: '#/components/schemas/Action'
+        updated_time:
+          type: string
+          format: date-time
+          description: The updated time.
+        create_time:
+          type: string
+          format: date-time
+          description: The create time.
+        application_type:
+          type: ['null', string]
+          description: The application type.
+        additional_info:
+          $ref: '#/components/schemas/AdditionalInfo'
+        user:
+          type: string
+          description: The username of the user.
     ModelConfig:
       type: object
       properties:
@@ -445,6 +466,8 @@ components:
             $ref: '_common.yaml#/components/schemas/Id'
         model_id:
           $ref: '_common.yaml#/components/schemas/Name'
+        name:
+          $ref: '#/components/schemas/OwnerNameKeyword'
         owner.name.keyword:
           $ref: '#/components/schemas/OwnerNameKeyword'
     Algorithm:
@@ -560,6 +583,28 @@ components:
           $ref: '#/components/schemas/SortOrder'
         _score:
           $ref: '#/components/schemas/SortOrder'
+    SortMemory:
+      type: object
+      description: The sort memory query.
+      properties:
+        additional_info:
+          $ref: '#/components/schemas/SortOrder'
+        application_time:
+          $ref: '#/components/schemas/SortOrder'
+        create_time:
+          $ref: '#/components/schemas/SortOrder'
+        updated_time:
+          $ref: '#/components/schemas/SortOrder'
+        user:
+          $ref: '#/components/schemas/SortOrder'
+        _id:
+          $ref: '#/components/schemas/SortOrder'
+        _index:
+          $ref: '#/components/schemas/SortOrder'
+        _score:
+          $ref: '#/components/schemas/SortOrder'
+        _seq_no:
+          $ref: '#/components/schemas/SortOrder'
     SortOrder:
       type: object
       description: The order of the sort.
@@ -804,6 +849,27 @@ components:
       properties:
         type:
           type: string
+        memory_id:
+          $ref: '_common.yaml#/components/schemas/Name'
+        create_time:
+          type: string
+          format: date-time
+          description: The create time.
+        updated_time:
+          type: string
+          format: date-time
+          description: The updated time.
+        name:
+          $ref: '_common.yaml#/components/schemas/Name'
+        user:
+          type: string
+          description: The username of the user.
+        additional_info:
+          $ref: '#/components/schemas/AdditionalInfo'
+    AdditionalInfo:
+      type: object
+      description: Additional information query.
+      properties: {}
     ToolItems:
       type: object
       properties:
@@ -851,4 +917,19 @@ components:
           format: int64
           description: The last updated time.
     SearchConnectorsResponse:
+      $ref: '#/components/schemas/SearchResponse'
+    GetMemoryResponse:
+      oneOf:
+        - $ref: '#/components/schemas/Memory'
+        - type: object
+          properties:
+            memories:
+              type: array
+              items:
+                $ref: '#/components/schemas/Memory'
+            next_token:
+              type: integer
+              format: int64
+              description: The index of the first memory in the sorted list of memories.
+    SearchMemoryResponse:
       $ref: '#/components/schemas/SearchResponse'
\ No newline at end of file
diff --git a/tests/plugins/ml/ml/memory/create.yaml b/tests/plugins/ml/ml/memory/create.yaml
new file mode 100644
index 00000000..20d6a16f
--- /dev/null
+++ b/tests/plugins/ml/ml/memory/create.yaml
@@ -0,0 +1,22 @@
+$schema: ../../../../../json_schemas/test_story.schema.yaml
+
+description: Test the creation of a memory.
+version: '>= 2.12'
+epilogues:
+  - path: /_plugins/_ml/memory/{memory_id}
+    method: DELETE
+    status: [200, 404]
+    parameters:
+      memory_id: ${create_memory.memory_id}
+chapters:
+  - synopsis: Create a memory.
+    id: create_memory
+    path: /_plugins/_ml/memory
+    method: POST
+    request:
+      payload:
+        name: Test memory
+    response:
+      status: 200
+    output:
+      memory_id: payload.memory_id
diff --git a/tests/plugins/ml/ml/memory/delete.yaml b/tests/plugins/ml/ml/memory/delete.yaml
new file mode 100644
index 00000000..cb568308
--- /dev/null
+++ b/tests/plugins/ml/ml/memory/delete.yaml
@@ -0,0 +1,27 @@
+$schema: ../../../../../json_schemas/test_story.schema.yaml
+
+description: Test the deletion of a memory.
+version: '>= 2.12'
+prologues:
+  - path: /_plugins/_ml/memory
+    id: create_memory
+    method: POST
+    request:
+      payload:
+        name: Test memory
+    output:
+      memory_id: payload.memory_id
+epilogues:
+  - path: /_plugins/_ml/memory/{memory_id}
+    method: DELETE
+    status: [200, 404]
+    parameters:
+      memory_id: ${create_memory.memory_id}
+chapters:
+  - synopsis: Delete a memory.
+    path: /_plugins/_ml/memory/{memory_id}
+    method: DELETE
+    parameters:
+      memory_id: ${create_memory.memory_id}
+    response:
+      status: 200
\ No newline at end of file
diff --git a/tests/plugins/ml/ml/memory/get.yaml b/tests/plugins/ml/ml/memory/get.yaml
new file mode 100644
index 00000000..9e378714
--- /dev/null
+++ b/tests/plugins/ml/ml/memory/get.yaml
@@ -0,0 +1,35 @@
+$schema: ../../../../../json_schemas/test_story.schema.yaml
+
+description: Test the retrieval of a memory by ID and all memories.
+version: '>= 2.12'
+prologues:
+  - path: /_plugins/_ml/memory
+    id: create_memory
+    method: POST
+    request:
+      payload:
+        name: Test memory
+    output:
+      memory_id: payload.memory_id
+epilogues:
+  - path: /_plugins/_ml/memory/{memory_id}
+    method: DELETE
+    status: [200, 404]
+    parameters:
+      memory_id: ${create_memory.memory_id}
+chapters:
+  - synopsis: Get a memory by ID.
+    path: /_plugins/_ml/memory/{memory_id}
+    method: GET
+    parameters:
+      memory_id: ${create_memory.memory_id}
+    response:
+      status: 200
+  - synopsis: Get all memories.
+    path: /_plugins/_ml/memory
+    method: GET
+    request:
+      payload:
+        max_results: 10
+    response:
+      status: 200
\ No newline at end of file
diff --git a/tests/plugins/ml/ml/memory/search.yaml b/tests/plugins/ml/ml/memory/search.yaml
new file mode 100644
index 00000000..873498cf
--- /dev/null
+++ b/tests/plugins/ml/ml/memory/search.yaml
@@ -0,0 +1,41 @@
+$schema: ../../../../../json_schemas/test_story.schema.yaml
+
+description: Test the search of memories.
+version: '>= 2.12'
+prologues:
+  - path: /_plugins/_ml/memory
+    id: create_memory
+    method: POST
+    request:
+      payload:
+        name: Test memory
+    output:
+      memory_id: payload.memory_id
+epilogues:
+  - path: /_plugins/_ml/memory/{memory_id}
+    method: DELETE
+    status: [200, 404]
+    parameters:
+      memory_id: ${create_memory.memory_id}
+chapters:
+  - synopsis: Search memory.
+    path: /_plugins/_ml/memory/_search
+    method: GET
+    request:
+      payload:
+        query:
+          match_all: {}
+        size: 1000
+    response:
+      status: 200
+  - synopsis: Search memory by name.
+    path: /_plugins/_ml/memory/_search
+    method: POST
+    request:
+      payload:
+        query:
+          term:
+            name:
+              value: conversation
+    response:
+      status: 200
\ No newline at end of file
diff --git a/tests/plugins/ml/ml/memory/update.yaml b/tests/plugins/ml/ml/memory/update.yaml
new file mode 100644
index 00000000..61e20d7d
--- /dev/null
+++ b/tests/plugins/ml/ml/memory/update.yaml
@@ -0,0 +1,30 @@
+$schema: ../../../../../json_schemas/test_story.schema.yaml
+
+description: Test updating of a memory.
+version: '>= 2.12'
+prologues:
+  - path: /_plugins/_ml/memory
+    id: create_memory
+    method: POST
+    request:
+      payload:
+        name: Test memory
+    output:
+      memory_id: payload.memory_id
+epilogues:
+  - path: /_plugins/_ml/memory/{memory_id}
+    method: DELETE
+    status: [200, 404]
+    parameters:
+      memory_id: ${create_memory.memory_id}
+chapters:
+  - synopsis: Update a memory.
+    path: /_plugins/_ml/memory/{memory_id}
+    method: PUT
+    parameters:
+      memory_id: ${create_memory.memory_id}
+    request:
+      payload:
+        name: Test memory updated
+    response:
+      status: 200