diff --git a/packages/opencode/src/cli/cmd/tui/feature-plugins/system/diff-viewer.tsx b/packages/opencode/src/cli/cmd/tui/feature-plugins/system/diff-viewer.tsx
index 94c72b84ed..013a032afc 100644
--- a/packages/opencode/src/cli/cmd/tui/feature-plugins/system/diff-viewer.tsx
+++ b/packages/opencode/src/cli/cmd/tui/feature-plugins/system/diff-viewer.tsx
@@ -107,7 +107,9 @@ function DiffViewer(props: { api: TuiPluginApi }) {
   })
   const files = createMemo(() => diff() ?? [])
   const [focus, setFocus] = createSignal<DiffViewerFocus>("patches")
-  const [fileTreeEnabled, setFileTreeEnabled] = createSignal(props.api.kv.get<boolean>(KV_SHOW_FILE_TREE, true) !== false)
+  const [fileTreeEnabled, setFileTreeEnabled] = createSignal(
+    props.api.kv.get<boolean>(KV_SHOW_FILE_TREE, true) !== false,
+  )
   const showFileTree = createMemo(() => showDiffViewerFileTree(fileTreeEnabled(), files().length))
   const [singlePatch, setSinglePatch] = createSignal(props.api.kv.get<boolean>(KV_SINGLE_PATCH, false) === true)
   const patchPaneWidth = createMemo(() => dimensions().width - (showFileTree() ? 33 : 0) - 4)
diff --git a/packages/sdk/openapi.json b/packages/sdk/openapi.json
index 5d4139139a..877d9ba7e6 100644
--- a/packages/sdk/openapi.json
+++ b/packages/sdk/openapi.json
@@ -2288,6 +2288,15 @@
               "enum": ["git", "branch"]
             },
             "required": true
+          },
+          {
+            "name": "context",
+            "in": "query",
+            "schema": {
+              "type": "integer",
+              "minimum": 0
+            },
+            "required": false
           }
         ],
         "responses": {