diff --git a/pkgs/clan-cli/clan_cli/api/modules.py b/pkgs/clan-cli/clan_cli/api/modules.py
index d09da67c5..88048bc66 100644
--- a/pkgs/clan-cli/clan_cli/api/modules.py
+++ b/pkgs/clan-cli/clan_cli/api/modules.py
@@ -163,6 +163,28 @@ def get_modules(base_path: str) -> dict[str, str]:
     return modules
 
 
+@API.register
+def get_module_interface(base_path: str, module_name: str) -> dict[str, Any]:
+    """
+    Check if a module exists and returns the interface schema
+    Returns an error if the module does not exist or has an incorrect interface
+    """
+    cmd = nix_eval([f"{base_path}#clanInternals.moduleSchemas.{module_name}", "--json"])
+    try:
+        proc = run_no_stdout(cmd)
+        res = proc.stdout.strip()
+    except ClanCmdError as e:
+        msg = "clanInternals might not have moduleSchemas attributes"
+        raise ClanError(
+            msg,
+            location=f"list_modules {base_path}",
+            description="Evaluation failed on clanInternals.moduleSchemas attribute",
+        ) from e
+    modules_schema: dict[str, Any] = json.loads(res)
+
+    return modules_schema
+
+
 @API.register
 def list_modules(base_path: str) -> dict[str, ModuleInfo]:
     """
diff --git a/pkgs/webview-ui/app/src/api_test.tsx b/pkgs/webview-ui/app/src/api_test.tsx
new file mode 100644
index 000000000..0fc9a6648
--- /dev/null
+++ b/pkgs/webview-ui/app/src/api_test.tsx
@@ -0,0 +1,107 @@
+import {
+  createForm,
+  FieldValues,
+  getValues,
+  SubmitHandler,
+} from "@modular-forms/solid";
+import { TextInput } from "./components/TextInput";
+import { Button } from "./components/button";
+import { callApi } from "./api";
+import { API } from "@/api/API";
+import { createSignal, Match, Switch } from "solid-js";
+import { Typography } from "./components/Typography";
+import { createQuery } from "@tanstack/solid-query";
+import { makePersisted } from "@solid-primitives/storage";
+
+interface APITesterForm extends FieldValues {
+  endpoint: string;
+  payload: string;
+}
+
+export const ApiTester = () => {
+  const [persistedTestData, setPersistedTestData] = makePersisted(
+    createSignal<APITesterForm>(),
+    {
+      name: "_test_data",
+      storage: localStorage,
+    },
+  );
+
+  const [formStore, { Form, Field }] = createForm<APITesterForm>({
+    initialValues: persistedTestData(),
+  });
+
+  const query = createQuery(() => ({
+    // eslint-disable-next-line @tanstack/query/exhaustive-deps
+    queryKey: [],
+    queryFn: async () => {
+      const values = getValues(formStore);
+      return await callApi(
+        values.endpoint as keyof API,
+        JSON.parse(values.payload || ""),
+      );
+    },
+    staleTime: Infinity,
+  }));
+
+  const handleSubmit: SubmitHandler<APITesterForm> = (values) => {
+    console.log(values);
+    setPersistedTestData(values);
+    query.refetch();
+
+    const v = getValues(formStore);
+    console.log(v);
+    // const result = callApi(
+    //   values.endpoint as keyof API,
+    //   JSON.parse(values.payload)
+    // );
+    // setResult(result);
+  };
+  return (
+    <div class="p-2">
+      <h1>API Tester</h1>
+      <Form onSubmit={handleSubmit}>
+        <div class="flex flex-col">
+          <Field name="endpoint">
+            {(field, fieldProps) => (
+              <TextInput
+                label={"endpoint"}
+                value={field.value || ""}
+                inputProps={fieldProps}
+                formStore={formStore}
+              />
+            )}
+          </Field>
+          <Field name="payload">
+            {(field, fieldProps) => (
+              <TextInput
+                label={"payload"}
+                value={field.value || ""}
+                inputProps={fieldProps}
+                formStore={formStore}
+              />
+            )}
+          </Field>
+          <Button class="m-2" disabled={query.isFetching}>
+            Send
+          </Button>
+        </div>
+      </Form>
+      <div>
+        <Typography hierarchy="title" size="default">
+          Result
+        </Typography>
+        <Switch>
+          <Match when={query.isFetching}>
+            <span>loading ...</span>
+          </Match>
+          <Match when={query.isFetched}>
+            <pre>
+              <code>{JSON.stringify(query.data, null, 2)}</code>
+            </pre>
+          </Match>
+        </Switch>
+      </div>
+    </div>
+  );
+};
diff --git a/pkgs/webview-ui/app/src/components/Sidebar/index.tsx b/pkgs/webview-ui/app/src/components/Sidebar/index.tsx
index 8ba262499..896f2de55 100644
--- a/pkgs/webview-ui/app/src/components/Sidebar/index.tsx
+++ b/pkgs/webview-ui/app/src/components/Sidebar/index.tsx
@@ -69,7 +69,12 @@ export const Sidebar = (props: RouteSectionProps) => {
       <div class="sidebar__body">
         <For each={routes.filter((r) => !r.hidden && r.path != "/clans")}>
           {(route: AppRoute) => (
-            <Show when={route.children}>
+            <Show
+              when={route.children}
+              fallback={
+                <SidebarListItem href={route.path} title={route.label} />
+              }
+            >
               {(children) => (
                 <SidebarSection title={route.label}>
                   <ul>
diff --git a/pkgs/webview-ui/app/src/components/Typography/index.tsx b/pkgs/webview-ui/app/src/components/Typography/index.tsx
index 528607bf5..ed030d1be 100644
--- a/pkgs/webview-ui/app/src/components/Typography/index.tsx
+++ b/pkgs/webview-ui/app/src/components/Typography/index.tsx
@@ -67,17 +67,25 @@ const weightMap: Record<Weight, string> = {
 
 interface TypographyProps<H extends Hierarchy> {
   hierarchy: H;
-  weight: Weight;
-  color: Color;
-  inverted: boolean;
+  weight?: Weight;
+  color?: Color;
+  inverted?: boolean;
   size: AllowedSizes<H>;
-  tag: Tag;
+  tag?: Tag;
   children: JSX.Element;
   classes?: string;
 }
 export const Typography = <H extends Hierarchy>(props: TypographyProps<H>) => {
-  const { size, color, inverted, hierarchy, weight, tag, children, classes } =
-    props;
+  const {
+    size,
+    color = "primary",
+    inverted,
+    hierarchy,
+    weight = "normal",
+    tag,
+    children,
+    classes,
+  } = props;
 
   return (
     <Dynamic
diff --git a/pkgs/webview-ui/app/src/components/button/index.tsx b/pkgs/webview-ui/app/src/components/button/index.tsx
index 9d179f11a..8502e2e2e 100644
--- a/pkgs/webview-ui/app/src/components/button/index.tsx
+++ b/pkgs/webview-ui/app/src/components/button/index.tsx
@@ -1,4 +1,4 @@
-import { type JSX } from "solid-js";
+import { splitProps, type JSX } from "solid-js";
 import cx from "classnames";
 
 type Variants = "dark" | "light";
@@ -42,32 +42,34 @@ interface ButtonProps extends JSX.ButtonHTMLAttributes<HTMLButtonElement> {
   children: JSX.Element;
   startIcon?: JSX.Element;
   endIcon?: JSX.Element;
+  class?: string;
 }
 export const Button = (props: ButtonProps) => {
-  const {
-    children,
-    variant = "dark",
-    size = "default",
-    startIcon,
-    endIcon,
-    ...buttonProps
-  } = props;
+  const [local, other] = splitProps(props, [
+    "children",
+    "variant",
+    "size",
+    "startIcon",
+    "endIcon",
+    "class",
+  ]);
   return (
     <button
       class={cx(
+        local.class,
         // Layout
         "inline-flex items-center flex-shrink gap-2 justify-center",
         // Styles
         "border border-solid",
-        sizePaddings[size],
+        sizePaddings[local.size || "default"],
         // Colors
-        variantColors[variant],
+        variantColors[local.variant || "dark"],
       )}
-      {...buttonProps}
+      {...other}
     >
-      <span class="h-4">{startIcon}</span>
-      <span>{children}</span>
-      <span class="h-4">{endIcon}</span>
+      <span class="h-4">{local.startIcon}</span>
+      <span>{local.children}</span>
+      <span class="h-4">{local.endIcon}</span>
     </button>
   );
 };
diff --git a/pkgs/webview-ui/app/src/index.tsx b/pkgs/webview-ui/app/src/index.tsx
index bdd3e969b..67046ee6a 100644
--- a/pkgs/webview-ui/app/src/index.tsx
+++ b/pkgs/webview-ui/app/src/index.tsx
@@ -18,6 +18,7 @@ import { Toaster } from "solid-toast";
 import { ModuleList } from "./routes/modules/list";
 import { ModuleDetails } from "./routes/modules/details";
 import { ModuleDetails as AddModule } from "./routes/modules/add";
+import { ApiTester } from "./api_test";
 
 export const client = new QueryClient();
 
@@ -138,6 +139,13 @@ export const routes: AppRoute[] = [
     hidden: true,
     component: () => <Welcome />,
   },
+  {
+    path: "/api_testing",
+    label: "api_testing",
+    icon: "bolt",
+    hidden: false,
+    component: () => <ApiTester />,
+  },
 ];
 
 render(