diff --git a/openapi/spec.yaml b/openapi/spec.yaml
new file mode 100644
index 0000000000..0001cccb6d
--- /dev/null
+++ b/openapi/spec.yaml
@@ -0,0 +1,134 @@
+openapi: "3.0.0"
+info:
+  title: OpenAPI of Django sspanel
+  description: ""
+  version: 0.0.1
+servers:
+  - url: http://127.0.0.1:8000/openapi/v1
+    description: Local development server
+
+components:
+  securitySchemes:
+    OpenApiKeyAuth:
+      type: apiKey
+      in: header
+      name: x-api-key
+  schemas:
+    ProxyNode:
+      type: object
+      properties:
+        id:
+          type: integer
+          format: int64
+        sequence:
+          type: integer
+        name:
+          type: string
+        server:
+          type: string
+        enable:
+          type: boolean
+        node_type:
+          type: string
+        info:
+          type: string
+        level:
+          type: integer
+        country:
+          type: string
+        used_traffic:
+          type: integer
+        total_traffic:
+          type: integer
+        provider_remark:
+          type: string
+        enable_udp:
+          type: boolean
+        current_used_download_bandwidth_bytes:
+          type: integer
+        current_used_upload_bandwidth_bytes:
+          type: integer
+        download_bandwidth_bytes:
+          type: integer
+        upload_bandwidth_bytes:
+          type: integer
+      required:
+        - id
+        - name
+        - server
+        - enable
+        - node_type
+        - info
+        - level
+        - country
+        - used_traffic
+        - total_traffic
+        - enlarge_scale
+        - provider_remark
+        - enable_udp
+        - current_used_download_bandwidth_bytes
+        - current_used_upload_bandwidth_bytes
+        - download_bandwidth_bytes
+        - upload_bandwidth_bytes
+    CommonErrorResp:
+      type: object
+      properties:
+        error_msg:
+          type: string
+          description: Error message
+      required:
+        - error_msg
+    UpdateProxyNodeReq:
+      type: object
+      properties:
+        enable:
+          type: boolean
+          description: Whether to enable or disable the ProxyNode
+        # TODO Add more properties as needed
+security:
+  - OpenApiKeyAuth: []
+
+paths:
+  /proxy_nodes/{node_id}/:
+    patch:
+      summary: Update a ProxyNode
+      tags:
+        - ProxyNode
+      parameters:
+        - name: node_id
+          in: path
+          required: true
+          schema:
+            type: integer
+          description: ID of the ProxyNode to update
+      requestBody:
+        required: true
+        content:
+          application/json:
+            schema:
+              $ref: "#/components/schemas/UpdateProxyNodeReq"
+      responses:
+        200:
+          description: Successful update
+          content:
+            application/json:
+              schema:
+                $ref: "#/components/schemas/ProxyNode"
+        400:
+          description: Bad request
+          content:
+            application/json:
+              schema:
+                $ref: "#/components/schemas/CommonErrorResp"
+        404:
+          description: ProxyNode not found
+          content:
+            application/json:
+              schema:
+                $ref: "#/components/schemas/CommonErrorResp"
+        500:
+          description: Internal server error
+          content:
+            application/json:
+              schema:
+                $ref: "#/components/schemas/CommonErrorResp"