diff --git a/package.json b/package.json
index f6c2520..1539a1a 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@agicash/opensecret-sdk",
-  "version": "0.1.0",
+  "version": "0.2.0",
   "publishConfig": {
     "access": "public"
   },
@@ -13,14 +13,19 @@
   "files": [
     "dist"
   ],
-  "main": "./dist/opensecret-react.umd.js",
-  "module": "./dist/opensecret-react.es.js",
+  "main": "./dist/opensecret-core.cjs.js",
+  "module": "./dist/opensecret-core.es.js",
   "types": "./dist/index.d.ts",
   "exports": {
     ".": {
-      "import": "./dist/opensecret-react.es.js",
-      "require": "./dist/opensecret-react.umd.js",
+      "import": "./dist/opensecret-core.es.js",
+      "require": "./dist/opensecret-core.cjs.js",
       "types": "./dist/index.d.ts"
+    },
+    "./react": {
+      "import": "./dist/opensecret-react.es.js",
+      "require": "./dist/opensecret-react.cjs.js",
+      "types": "./dist/react.d.ts"
     }
   },
   "scripts": {
@@ -39,6 +44,14 @@
     "react": "^18.0.0 || ^19.0.0",
     "react-dom": "^18.0.0 || ^19.0.0"
   },
+  "peerDependenciesMeta": {
+    "react": {
+      "optional": true
+    },
+    "react-dom": {
+      "optional": true
+    }
+  },
   "dependencies": {
     "@peculiar/x509": "^1.12.2",
     "@stablelib/base64": "^2.0.0",
diff --git a/src/AI.tsx b/src/AI.tsx
index f28e552..0709057 100644
--- a/src/AI.tsx
+++ b/src/AI.tsx
@@ -1,4 +1,4 @@
-import { useOpenSecret } from "./lib";
+import { useOpenSecret } from "./lib/react";
 import { useState, FormEvent } from "react";
 import OpenAI from "openai";
 
diff --git a/src/App.tsx b/src/App.tsx
index e110afd..22b34bd 100644
--- a/src/App.tsx
+++ b/src/App.tsx
@@ -1,7 +1,7 @@
 import "./App.css";
 import { useState } from "react";
 import React from "react";
-import { useOpenSecret } from "./lib";
+import { useOpenSecret } from "./lib/react";
 import type { KVListItem } from "./lib";
 import { schnorr, secp256k1 } from "@noble/curves/secp256k1";
 import { AI } from "./AI";
diff --git a/src/lib/index.ts b/src/lib/index.ts
index f74da29..8a87d60 100644
--- a/src/lib/index.ts
+++ b/src/lib/index.ts
@@ -127,24 +127,12 @@ export {
   EXPECTED_ROOT_CERT_HASH as expectedRootCertHash
 } from "./attestationForView";
 
-// Export the provider and context
-export { OpenSecretProvider, OpenSecretContext } from "./main";
-export { OpenSecretDeveloper, OpenSecretDeveloperContext } from "./developer";
+// NOTE: The React provider, contexts, and hooks are intentionally NOT exported
+// from the default barrel — importing the default package entry must pull ZERO
+// react into the module graph. They are available via the "<pkg>/react" subpath
+// (see src/lib/react.ts). This keeps the core surface react-free.
 
-// Export the hooks
-export { useOpenSecret } from "./context";
-export { useOpenSecretDeveloper } from "./developerContext";
-
-// Export types needed by consumers
-export type { OpenSecretAuthState, OpenSecretContextType } from "./main";
-export type {
-  OpenSecretDeveloperAuthState,
-  OpenSecretDeveloperContextType,
-  DeveloperRole,
-  OrganizationDetails,
-  ProjectDetails,
-  ProjectSettings
-} from "./developer";
+// Export core types needed by consumers
 export type { AttestationDocument } from "./attestation";
 export type { ParsedAttestationView } from "./attestationForView";
 export type { PcrConfig, Pcr0ValidationResult } from "./pcr";
diff --git a/src/lib/react.ts b/src/lib/react.ts
new file mode 100644
index 0000000..d04cd8e
--- /dev/null
+++ b/src/lib/react.ts
@@ -0,0 +1,20 @@
+// Opt-in React surface — import from "<pkg>/react".
+// Re-export the full core so /react remains a drop-in for the old single barrel.
+export * from "./index";
+
+// React provider, contexts, hooks
+export { OpenSecretProvider, OpenSecretContext } from "./main";
+export { OpenSecretDeveloper, OpenSecretDeveloperContext } from "./developer";
+export { useOpenSecret } from "./context";
+export { useOpenSecretDeveloper } from "./developerContext";
+
+// React-surface types
+export type { OpenSecretAuthState, OpenSecretContextType } from "./main";
+export type {
+  OpenSecretDeveloperAuthState,
+  OpenSecretDeveloperContextType,
+  DeveloperRole,
+  OrganizationDetails,
+  ProjectDetails,
+  ProjectSettings
+} from "./developer";
diff --git a/src/lib/util.ts b/src/lib/util.ts
deleted file mode 100644
index fb1ede1..0000000
--- a/src/lib/util.ts
+++ /dev/null
@@ -1,19 +0,0 @@
-import { useEffect, useRef } from "react";
-
-// Implementation that ensures callback only runs once, even in React strict mode
-export function useOnMount(callback: () => void) {
-  const hasRun = useRef(false);
-
-  // eslint-disable-next-line react-hooks/exhaustive-deps
-  useEffect(() => {
-    if (!hasRun.current) {
-      hasRun.current = true;
-      callback();
-    }
-  }, []);
-}
-
-// Helper function to sleep for a specified duration
-export function sleep(ms: number): Promise<void> {
-  return new Promise((resolve) => setTimeout(resolve, ms));
-}
diff --git a/src/main.tsx b/src/main.tsx
index f8e8d12..689eea4 100644
--- a/src/main.tsx
+++ b/src/main.tsx
@@ -2,7 +2,7 @@ import { StrictMode } from "react";
 import { createRoot } from "react-dom/client";
 import "./index.css";
 import App from "./App.tsx";
-import { OpenSecretProvider } from "./lib";
+import { OpenSecretProvider } from "./lib/react";
 
 createRoot(document.getElementById("root")!).render(
   <StrictMode>
diff --git a/vite.config.ts b/vite.config.ts
index 34fefba..b25890a 100644
--- a/vite.config.ts
+++ b/vite.config.ts
@@ -46,27 +46,28 @@ export default defineConfig({
   },
   build: {
     lib: {
-      entry: path.resolve(__dirname, "src/lib/index.ts"),
-      name: "OpenSecretReact",
-      fileName: (format) => `opensecret-react.${format}.js`
+      // Two entries: the default core barrel (react-free) and the opt-in react barrel.
+      // Multi-entry lib mode cannot emit UMD, so we emit ES + CJS only.
+      entry: {
+        index: path.resolve(__dirname, "src/lib/index.ts"),
+        react: path.resolve(__dirname, "src/lib/react.ts")
+      },
+      formats: ["es", "cjs"],
+      // index -> opensecret-core.{es,cjs}.js ; react -> opensecret-react.{es,cjs}.js
+      fileName: (format, entryName) => {
+        const base = entryName === "index" ? "opensecret-core" : "opensecret-react";
+        return `${base}.${format}.js`;
+      }
     },
     rollupOptions: {
       // Externalize React and React DOM along with their internals
       external: [
-        "react", 
+        "react",
         "react-dom",
         "react/jsx-runtime",
         /^react\/.*/,
         /^react-dom\/.*/
-      ],
-      output: {
-        // Provide global variables to use in the UMD build
-        globals: {
-          react: "React",
-          "react-dom": "ReactDOM",
-          "react/jsx-runtime": "React"
-        }
-      }
+      ]
     }
   }
 });