diff --git a/.changeset/feat-switch-xs-size.md b/.changeset/feat-switch-xs-size.md
new file mode 100644
index 0000000000..907f03933e
--- /dev/null
+++ b/.changeset/feat-switch-xs-size.md
@@ -0,0 +1,9 @@
+---
+"@cloudflare/kumo": minor
+---
+
+feat(switch): add `xs` extra-small size variant
+
+Adds a new `size="xs"` option to the Switch component for use in inline badges, pills, and compact toolbars where the existing `sm` size is too large. The `xs` switch renders at 14x28px (track) with a 14px thumb, following the same squircle shape, ring border, and thumb shadow as all other sizes.
+
+Size progression: `xs` (14px) < `sm` (16px) < `base` (18px) < `lg` (20px).
diff --git a/.opencode/package-lock.json b/.opencode/package-lock.json
index e74899eb91..a427e44bff 100644
--- a/.opencode/package-lock.json
+++ b/.opencode/package-lock.json
@@ -5,7 +5,7 @@
   "packages": {
     "": {
       "dependencies": {
-        "@opencode-ai/plugin": "1.4.6"
+        "@opencode-ai/plugin": "1.4.7"
       }
     },
     "node_modules/@msgpackr-extract/msgpackr-extract-darwin-arm64": {
@@ -87,12 +87,12 @@
       ]
     },
     "node_modules/@opencode-ai/plugin": {
-      "version": "1.4.6",
-      "resolved": "https://registry.npmjs.org/@opencode-ai/plugin/-/plugin-1.4.6.tgz",
-      "integrity": "sha512-w+55uE4tCpFoK+MtWeGoPDmpuuabw8m5WVpmucIKoTO5SgD/3EwXVPBqAh44iS72ve1Eu+uhhzeVQ070x9bVjg==",
+      "version": "1.4.7",
+      "resolved": "https://registry.npmjs.org/@opencode-ai/plugin/-/plugin-1.4.7.tgz",
+      "integrity": "sha512-RbzMl7ILvQDHpZNvqzi6RCYaGcB3eBwNIMRZww467drLvMd1eOwr4/qAurrvYDsIIEctE6cKsrLuSGIKCW/Fxg==",
       "license": "MIT",
       "dependencies": {
-        "@opencode-ai/sdk": "1.4.6",
+        "@opencode-ai/sdk": "1.4.7",
         "effect": "4.0.0-beta.48",
         "zod": "4.1.8"
       },
@@ -110,9 +110,9 @@
       }
     },
     "node_modules/@opencode-ai/sdk": {
-      "version": "1.4.6",
-      "resolved": "https://registry.npmjs.org/@opencode-ai/sdk/-/sdk-1.4.6.tgz",
-      "integrity": "sha512-sQaVfEfQW3m3DeCVlurSTUjgIYdIk+gIfOys51MVFYzJHw+FyjjuAt7EKKA+LeZU5AiWGlpkIRa1rJo5KWMXCw==",
+      "version": "1.4.7",
+      "resolved": "https://registry.npmjs.org/@opencode-ai/sdk/-/sdk-1.4.7.tgz",
+      "integrity": "sha512-onEtaooQyoDP5gTShQeQSf0Sd8V7949G9pPNyIyRXnVtFqyDIhUDLGtL/a/+EIW9x5s+Y6lDy/3oVoGMvQ0rQQ==",
       "license": "MIT",
       "dependencies": {
         "cross-spawn": "7.0.6"
diff --git a/packages/kumo-docs-astro/src/components/demos/SwitchDemo.tsx b/packages/kumo-docs-astro/src/components/demos/SwitchDemo.tsx
index 66ba25d05d..4e198f68da 100644
--- a/packages/kumo-docs-astro/src/components/demos/SwitchDemo.tsx
+++ b/packages/kumo-docs-astro/src/components/demos/SwitchDemo.tsx
@@ -98,6 +98,12 @@ export function SwitchCustomIdDemo() {
 export function SwitchSizesDemo() {
   return (
     <div className="flex flex-col gap-4">
+      <Switch
+        label="Extra small"
+        size="xs"
+        checked={true}
+        onCheckedChange={() => {}}
+      />
       <Switch
         label="Small"
         size="sm"
diff --git a/packages/kumo-docs-astro/src/pages/components/switch.mdx b/packages/kumo-docs-astro/src/pages/components/switch.mdx
index 7e35f20ef0..81d81a4def 100644
--- a/packages/kumo-docs-astro/src/pages/components/switch.mdx
+++ b/packages/kumo-docs-astro/src/pages/components/switch.mdx
@@ -122,7 +122,10 @@ export default function Example() {
 
 ### Sizes
 
-<p>Three sizes available: `sm`, `base` (default), and `lg`.</p>
+<p>
+  Four sizes available: `xs`, `sm`, `base` (default), and `lg`. The `xs` size is
+  designed for inline badges, pills, and compact toolbars.
+</p>
 <ComponentExample demo="SwitchSizesDemo">
   <SwitchSizesDemo client:visible />
 </ComponentExample>
diff --git a/packages/kumo/src/components/switch/switch.tsx b/packages/kumo/src/components/switch/switch.tsx
index 388bc64e06..1def26cc85 100644
--- a/packages/kumo/src/components/switch/switch.tsx
+++ b/packages/kumo/src/components/switch/switch.tsx
@@ -14,6 +14,11 @@ import { Fieldset } from "@base-ui/react/fieldset";
 /** Switch size and variant definitions mapping names to their Tailwind classes. */
 export const KUMO_SWITCH_VARIANTS = {
   size: {
+    xs: {
+      classes: "h-4.5 w-7 min-h-6 min-w-6",
+      description:
+        "Extra-small switch for inline badges, pills, and compact toolbars. Track is visually compact but touch target meets WCAG 2.5.8 minimum (24x24px).",
+    },
     sm: {
       classes: "h-5.5 w-8.5",
       description: "Small switch for compact UIs",
@@ -51,6 +56,7 @@ export type KumoSwitchVariant = keyof typeof KUMO_SWITCH_VARIANTS.variant;
 export interface KumoSwitchVariantsProps {
   /**
    * Switch size.
+   * - `"xs"` — Extra-small for inline badges, pills, and compact toolbars
    * - `"sm"` — Small for compact UIs
    * - `"base"` — Default size
    * - `"lg"` — Large for prominent toggles
@@ -237,6 +243,7 @@ const SwitchBase = forwardRef<HTMLButtonElement, SwitchProps>(
 
           // Size styles matching Kyle's stratus implementation
           const sizeStyles = {
+            xs: { track: "h-3.5 w-7", thumb: "w-3.5", slide: "left-3.5" },
             sm: { track: "h-4 w-8", thumb: "w-4", slide: "left-4" },
             base: { track: "h-4.5 w-9", thumb: "w-4.5", slide: "left-4.5" },
             lg: { track: "h-5 w-10", thumb: "w-5", slide: "left-5" },
@@ -387,6 +394,7 @@ const SwitchItem = forwardRef<HTMLButtonElement, SwitchItemProps>(
 
             // Size styles matching Kyle's stratus implementation
             const sizeStyles = {
+              xs: { track: "h-3.5 w-7", thumb: "w-3.5", slide: "left-3.5" },
               sm: { track: "h-4 w-8", thumb: "w-4", slide: "left-4" },
               base: { track: "h-4.5 w-9", thumb: "w-4.5", slide: "left-4.5" },
               lg: { track: "h-5 w-10", thumb: "w-5", slide: "left-5" },