diff --git a/.changeset/mcp-table-group-by-on-left.md b/.changeset/mcp-table-group-by-on-left.md
new file mode 100644
index 0000000000..e23073adaa
--- /dev/null
+++ b/.changeset/mcp-table-group-by-on-left.md
@@ -0,0 +1,5 @@
+---
+'@hyperdx/api': patch
+---
+
+Add groupByColumnsOnLeft to MCP dashboard table tile schema
diff --git a/packages/api/src/mcp/__tests__/dashboards.test.ts b/packages/api/src/mcp/__tests__/dashboards.test.ts
index 99d7bde30b..f2a8eaf1be 100644
--- a/packages/api/src/mcp/__tests__/dashboards.test.ts
+++ b/packages/api/src/mcp/__tests__/dashboards.test.ts
@@ -351,6 +351,8 @@ describe('MCP Dashboard Tools', () => {
               displayType: 'table',
               sourceId,
               select: [{ aggFn: 'count' }],
+              groupBy: 'SpanName',
+              groupByColumnsOnLeft: true,
             },
           },
           {
@@ -392,6 +394,12 @@ describe('MCP Dashboard Tools', () => {
       expect(result.isError).toBeFalsy();
       const output = JSON.parse(getFirstText(result));
       expect(output.tiles).toHaveLength(5);
+
+      const tableTile = output.tiles.find(
+        (t: { name: string }) => t.name === 'Table',
+      );
+      expect(tableTile).toBeDefined();
+      expect(tableTile.config.groupByColumnsOnLeft).toBe(true);
     });
 
     it('should create a dashboard with a raw SQL tile', async () => {
diff --git a/packages/api/src/mcp/tools/dashboards/schemas.ts b/packages/api/src/mcp/tools/dashboards/schemas.ts
index b01f8c9454..b3aaffe044 100644
--- a/packages/api/src/mcp/tools/dashboards/schemas.ts
+++ b/packages/api/src/mcp/tools/dashboards/schemas.ts
@@ -146,6 +146,13 @@ const mcpTableTileSchema = mcpTileLayoutSchema.extend({
       ),
     orderBy: z.string().optional().describe('Sort results by this column'),
     asRatio: z.boolean().optional(),
+    groupByColumnsOnLeft: z
+      .boolean()
+      .optional()
+      .describe(
+        'Render Group By columns on the left side of the table, before the series columns. ' +
+          'Default false (Group By columns on the right).',
+      ),
   }),
 });