diff --git a/components/PiPayButton.tsx b/components/PiPayButton.tsx
new file mode 100644
index 0000000..f49a662
--- /dev/null
+++ b/components/PiPayButton.tsx
@@ -0,0 +1,14 @@
+"use client"
+
+import { usePiPayment } from "../hooks/usePiPayment"
+import type { PaymentData } from "pi-sdk-js"
+
+export function PiPayButton({ paymentData }: { paymentData: PaymentData }) {
+  const { pay, status } = usePiPayment(paymentData)
+
+  return (
+    <button onClick={pay} disabled={status === "pending"}>
+      {status === "pending" ? "Processing..." : "Pay with Pi"}
+    </button>
+  )
+}
diff --git a/components/components/PiAuthGuard.tsx b/components/components/PiAuthGuard.tsx
new file mode 100644
index 0000000..0ee0dc0
--- /dev/null
+++ b/components/components/PiAuthGuard.tsx
@@ -0,0 +1,12 @@
+"use client"
+
+import { usePiConnection } from "../hooks/usePiConnection"
+
+export function PiAuthGuard({ children }: { children: React.ReactNode }) {
+  const { connected, ready } = usePiConnection()
+
+  if (!ready) return <p>Loading Pi SDK...</p>
+  if (!connected) return <p>Please authenticate with Pi</p>
+
+  return <>{children}</>
+}
diff --git a/core/core/core/payment-validator.ts b/core/core/core/payment-validator.ts
new file mode 100644
index 0000000..304cf90
--- /dev/null
+++ b/core/core/core/payment-validator.ts
@@ -0,0 +1,16 @@
+import type { PaymentData } from "pi-sdk-js"
+import { PiSdkError, PiSdkErrorCode } from "./error"
+
+export function validatePaymentData(data: PaymentData) {
+  if (!data.amount || data.amount <= 0) {
+    throw new PiSdkError(PiSdkErrorCode.INVALID_PAYMENT, "Invalid amount")
+  }
+  if (!data.memo) {
+    throw new PiSdkError(PiSdkErrorCode.INVALID_PAYMENT, "Memo is required")
+  }
+  try {
+    JSON.stringify(data.metadata ?? {})
+  } catch {
+    throw new PiSdkError(PiSdkErrorCode.INVALID_PAYMENT, "Metadata must be serializable")
+  }
+}
diff --git a/core/core/pi-loader.ts b/core/core/pi-loader.ts
new file mode 100644
index 0000000..597f7e8
--- /dev/null
+++ b/core/core/pi-loader.ts
@@ -0,0 +1,9 @@
+export function isPiReady(): boolean {
+  return typeof window !== "undefined" && !!window.Pi
+}
+
+export function assertPiReady() {
+  if (!isPiReady()) {
+    throw new Error("Pi SDK not loaded. Ensure <script src='https://sdk.minepi.com/pi-sdk.js' />")
+  }
+}
diff --git a/core/error.ts b/core/error.ts
new file mode 100644
index 0000000..f3d6703
--- /dev/null
+++ b/core/error.ts
@@ -0,0 +1,16 @@
+export enum PiSdkErrorCode {
+  SDK_NOT_LOADED = "SDK_NOT_LOADED",
+  NOT_READY = "NOT_READY",
+  USER_REJECTED = "USER_REJECTED",
+  INVALID_PAYMENT = "INVALID_PAYMENT",
+  NETWORK_ERROR = "NETWORK_ERROR",
+  UNKNOWN = "UNKNOWN"
+}
+
+export class PiSdkError extends Error {
+  code: PiSdkErrorCode
+  constructor(code: PiSdkErrorCode, message?: string) {
+    super(message ?? code)
+    this.code = code
+  }
+}
diff --git a/mock/index.ts b/mock/index.ts
new file mode 100644
index 0000000..8ecc4cb
--- /dev/null
+++ b/mock/index.ts
@@ -0,0 +1,6 @@
+export * from "./provider/PiProvider"
+export * from "./hooks/usePiConnection"
+export * from "./hooks/usePiAuth"
+export * from "./hooks/usePiPayment"
+export * from "./components/PiPayButton"
+export * from "./components/PiAuthGuard"
diff --git a/mock/mockPi.ts b/mock/mockPi.ts
new file mode 100644
index 0000000..76edb62
--- /dev/null
+++ b/mock/mockPi.ts
@@ -0,0 +1,15 @@
+export function setupMockPi() {
+  if (window.Pi) return
+
+  window.Pi = {
+    authenticate(scopes, onSuccess) {
+      onSuccess({ user: { uid: "mock-user", username: "dev" } })
+    },
+    createPayment(data, callbacks) {
+      setTimeout(() => {
+        callbacks.onReadyForServerApproval("mock-payment-id")
+        callbacks.onReadyForServerCompletion("mock-payment-id", "mock-txid")
+      }, 1000)
+    }
+  }
+}
diff --git a/production-grade React SDK b/production-grade React SDK
new file mode 100644
index 0000000..135a202
--- /dev/null
+++ b/production-grade React SDK	
@@ -0,0 +1,18 @@
+src/
+├── core/
+│   ├── pi-loader.ts
+│   ├── error.ts
+│   └── payment-validator.ts
+├── provider/
+│   └── PiProvider.tsx
+├── hooks/
+│   ├── usePiConnection.ts
+│   ├── usePiAuth.ts
+│   ├── usePiPayment.ts
+│   └── usePiServerHandshake.ts
+├── components/
+│   ├── PiPayButton.tsx
+│   └── PiAuthGuard.tsx
+├── mock/
+│   └── mockPi.ts
+└── index.ts
diff --git a/provider/PiProvider.tsx b/provider/PiProvider.tsx
new file mode 100644
index 0000000..141c549
--- /dev/null
+++ b/provider/PiProvider.tsx
@@ -0,0 +1,46 @@
+"use client"
+
+import React, { createContext, useContext, useEffect, useState } from "react"
+import { isPiReady } from "../core/pi-loader"
+import { setupMockPi } from "../mock/mockPi"
+
+type PiContextState = {
+  ready: boolean
+  user: any | null
+}
+
+const PiContext = createContext<PiContextState>({
+  ready: false,
+  user: null
+})
+
+export function PiProvider({
+  children,
+  mock = false
+}: {
+  children: React.ReactNode
+  mock?: boolean
+}) {
+  const [ready, setReady] = useState(false)
+  const [user, setUser] = useState<any>(null)
+
+  useEffect(() => {
+    if (mock) setupMockPi()
+    if (isPiReady()) {
+      setReady(true)
+      window.Pi.authenticate([], (auth) => {
+        setUser(auth.user)
+      })
+    }
+  }, [mock])
+
+  return (
+    <PiContext.Provider value={{ ready, user }}>
+      {children}
+    </PiContext.Provider>
+  )
+}
+
+export function usePiContext() {
+  return useContext(PiContext)
+}
diff --git a/provider/hooks/hooks/hooks/hooks/usePiServerHandshake.ts b/provider/hooks/hooks/hooks/hooks/usePiServerHandshake.ts
new file mode 100644
index 0000000..24058e8
--- /dev/null
+++ b/provider/hooks/hooks/hooks/hooks/usePiServerHandshake.ts
@@ -0,0 +1,11 @@
+export function usePiServerHandshake(handlers: {
+  onApprove?: (paymentId: string) => Promise<void>
+  onComplete?: (txid: string) => Promise<void>
+  onFail?: (reason: string) => void
+}) {
+  return {
+    approve: handlers.onApprove,
+    complete: handlers.onComplete,
+    fail: handlers.onFail
+  }
+}
diff --git a/provider/hooks/hooks/hooks/usePiPayment.ts b/provider/hooks/hooks/hooks/usePiPayment.ts
new file mode 100644
index 0000000..3eedd41
--- /dev/null
+++ b/provider/hooks/hooks/hooks/usePiPayment.ts
@@ -0,0 +1,44 @@
+import { useState, useCallback } from "react"
+import type { PaymentData } from "pi-sdk-js"
+import { validatePaymentData } from "../core/payment-validator"
+import { PiSdkErrorCode } from "../core/error"
+
+type PaymentStatus = "idle" | "pending" | "success" | "failed" | "cancelled"
+
+export function usePiPayment(paymentData: PaymentData) {
+  const [status, setStatus] = useState<PaymentStatus>("idle")
+  const [txid, setTxid] = useState<string | null>(null)
+  const [error, setError] = useState<any>(null)
+
+  const pay = useCallback(async () => {
+    try {
+      validatePaymentData(paymentData)
+      if (!window.Pi) throw { code: PiSdkErrorCode.SDK_NOT_LOADED }
+
+      setStatus("pending")
+
+      await window.Pi.createPayment(paymentData, {
+        onReadyForServerApproval(paymentId) {
+          // kirim paymentId ke backend
+        },
+        onReadyForServerCompletion(paymentId, txid) {
+          setTxid(txid)
+        },
+        onCancel() {
+          setStatus("cancelled")
+        },
+        onError(err) {
+          setError(err)
+          setStatus("failed")
+        }
+      })
+
+      setStatus("success")
+    } catch (e) {
+      setError(e)
+      setStatus("failed")
+    }
+  }, [paymentData])
+
+  return { pay, status, txid, error }
+}
diff --git a/provider/hooks/hooks/usePiAuth.ts b/provider/hooks/hooks/usePiAuth.ts
new file mode 100644
index 0000000..cee91b7
--- /dev/null
+++ b/provider/hooks/hooks/usePiAuth.ts
@@ -0,0 +1,30 @@
+import { useState, useCallback } from "react"
+import { PiSdkError, PiSdkErrorCode } from "../core/error"
+
+export function usePiAuth() {
+  const [user, setUser] = useState<any>(null)
+  const [authenticated, setAuthenticated] = useState(false)
+
+  const authenticate = useCallback(async () => {
+    if (!window.Pi) {
+      throw new PiSdkError(PiSdkErrorCode.SDK_NOT_LOADED)
+    }
+
+    return new Promise((resolve, reject) => {
+      window.Pi.authenticate([], (auth) => {
+        setUser(auth.user)
+        setAuthenticated(true)
+        resolve(auth.user)
+      }, (err) => {
+        reject(err)
+      })
+    })
+  }, [])
+
+  const logout = () => {
+    setUser(null)
+    setAuthenticated(false)
+  }
+
+  return { user, authenticated, authenticate, logout }
+}
diff --git a/provider/hooks/usePiConnection.ts b/provider/hooks/usePiConnection.ts
new file mode 100644
index 0000000..c29feb6
--- /dev/null
+++ b/provider/hooks/usePiConnection.ts
@@ -0,0 +1,10 @@
+import { usePiContext } from "../provider/PiProvider"
+
+export function usePiConnection() {
+  const { ready, user } = usePiContext()
+  return {
+    ready,
+    connected: !!user,
+    user
+  }
+}