diff --git a/crc/api.yml b/crc/api.yml
index bea7f284..c8d30305 100644
--- a/crc/api.yml
+++ b/crc/api.yml
@@ -941,6 +941,35 @@ paths:
                 type: string
                 format: binary
                 example: '<?xml version="1.0" encoding="UTF-8"?><bpmn:definitions></bpmn:definitions>'
+  /dmn_from_ss:
+    parameters:
+      - name: workflow_spec_id
+        in: query
+        required: true
+        description: The unique id of a workflow specification
+        schema:
+          type: string
+    post:
+      operationId: crc.api.file.dmn_from_ss
+      summary: Create a DMN table from a spreadsheet
+      tags:
+        - Files
+      requestBody:
+        content:
+          multipart/form-data:
+            schema:
+              type: object
+              properties:
+                file:
+                  type: string
+                  format: binary
+      responses:
+        '200':
+          description: DMN file for workflow spec
+          content:
+            application/json:
+              schema:
+                $ref: "#/components/schemas/File"
   /task_events:
     parameters:
       - name: action
diff --git a/crc/api/file.py b/crc/api/file.py
index 118dccfc..a11ddb66 100644
--- a/crc/api/file.py
+++ b/crc/api/file.py
@@ -167,3 +167,7 @@ def update_file_info(file_id, body):
 
 def delete_file(file_id):
     FileService.delete_file(file_id)
+
+
+def dmn_from_ss(workflow_spec_id):
+    pass