# Morpho Solana Frontend > Build production-ready frontend for Morpho Blue lending protocol on Solana. Covers all 26 program instructions across supply/borrow, flash loans, liquidations, authorization, and admin features. Uses Next.js 14, Anchor client, Jupiter wallet adapter, and Kamino-style UI/UX. Integrates with morpho-solana-builder skill for contract understanding. - Skill: `majiayu000/morpho-solana-frontend` (Agent Skill, multi-file: 2 files) - Install (CLI): `npx skillmds add majiayu000/morpho-solana-frontend` - Raw SKILL.md: https://api.skillmd.com/api/skills/majiayu000/morpho-solana-frontend/raw - Safety review: pending - Works with: Claude Code, Claude.ai, OpenAI Codex - Category: Web & Frontend - Author: majiayu000 (https://skillmd.com/u/majiayu000) - Updated: 2026-09-09 - Page: https://skillmd.com/skills/majiayu000/morpho-solana-frontend --- # Morpho Solana Frontend Builder Build a complete, production-ready frontend for the Morpho Blue lending protocol on Solana with all 26 instructions implemented. ## Overview This skill guides you through building a DeFi lending interface that covers: - **Core Lending**: Supply, withdraw, borrow, repay, collateral management - **Flash Loans**: All 3 flash loan modes (single-instruction, two-step start/end) - **Liquidations**: Unhealthy position scanner and liquidation interface - **Authorization**: Time-based delegation system with revocation - **Admin Panel**: Protocol management, whitelisting, fee controls - **Position Management**: Auto-create positions, close empty positions ## Tech Stack ```typescript Core Framework: ├── Next.js 14 (App Router) ├── TypeScript ├── TailwindCSS + shadcn/ui └── Framer Motion Solana Integration: ├── @solana/web3.js ├── @solana/wallet-adapter-react (Jupiter) ├── @coral-xyz/anchor └── @solana/spl-token State Management: ├── Zustand (global state) ├── TanStack Query (async state) └── WebSocket subscriptions UI Components: ├── Recharts (analytics) ├── Radix UI (primitives) └── shadcn/ui (pre-built components) ``` ## Project Structure ``` app/ ├── (user)/ # User routes (no auth required) │ ├── markets/ │ │ ├── page.tsx # Markets explorer │ │ └── [marketId]/ │ │ └── page.tsx # Market detail │ ├── dashboard/page.tsx # User positions │ ├── liquidations/page.tsx # Liquidation opportunities │ ├── flash-loans/page.tsx # Flash loan interface │ ├── settings/page.tsx # User settings │ └── page.tsx # Landing page ├── (admin)/ # Admin routes (owner only) │ └── admin/ │ ├── layout.tsx # Admin auth wrapper │ ├── page.tsx # Admin dashboard │ ├── protocol/page.tsx # Protocol settings │ ├── markets/page.tsx # Market management │ └── whitelist/page.tsx # LLTV/IRM whitelist └── layout.tsx # Root layout components/ ├── wallet/ │ ├── WalletProvider.tsx # Jupiter wallet setup │ ├── WalletButton.tsx # Connect button │ └── WalletDropdown.tsx # Balance, disconnect ├── market/ │ ├── MarketCard.tsx # Market list item │ ├── MarketStats.tsx # TVL, APY display │ └── tabs/ │ ├── SupplyTab.tsx # supply() │ ├── WithdrawTab.tsx # withdraw() │ ├── CollateralTab.tsx # supply_collateral() + withdraw_collateral() │ ├── BorrowTab.tsx # borrow() │ ├── RepayTab.tsx # repay() │ ├── LiquidateTab.tsx # liquidate() │ ├── FlashLoanTab.tsx # flash_loan() variants │ └── AuthorizationTab.tsx # set_authorization() ├── position/ │ ├── PositionCard.tsx # Position display │ ├── HealthFactor.tsx # Health visualization │ └── PositionManager.tsx # create_position(), close_position() ├── admin/ │ ├── ProtocolControls.tsx # Pause, ownership │ ├── WhitelistManager.tsx # enable_lltv(), enable_irm() │ ├── MarketControls.tsx # set_fee(), set_market_paused() │ └── FeeClaimButton.tsx # claim_fees() ├── shared/ │ ├── TokenSelector.tsx # Token dropdown │ ├── TransactionModal.tsx # TX signing flow │ ├── HealthFactorBar.tsx # Visual health │ └── APYBadge.tsx # Supply/borrow APY └── layout/ ├── Header.tsx # Nav + wallet ├── Sidebar.tsx # Navigation └── Footer.tsx lib/ ├── anchor/ │ ├── idl.ts # Morpho program IDL │ ├── client.ts # Anchor Program instance │ └── instructions/ │ ├── supply.ts # Supply instruction builders │ ├── borrow.ts # Borrow instruction builders │ ├── liquidate.ts # Liquidation instruction │ ├── flashLoan.ts # Flash loan instructions │ ├── admin.ts # Admin instructions │ └── utils.ts # Utility instructions ├── hooks/ │ ├── useMarkets.ts # Fetch all markets │ ├── useMarket.ts # Fetch single market │ ├── usePosition.ts # User position data │ ├── usePositions.ts # All user positions │ ├── useLiquidations.ts # Liquidation opportunities │ ├── useFlashLoan.ts # Flash loan helpers │ └── useAuthorizations.ts # User's delegations ├── math/ │ ├── shares.ts # Share calculations (ERC-4626) │ ├── interest.ts # APY calculations │ ├── liquidation.ts # LIF, seized collateral │ └── health.ts # Health factor logic ├── constants/ │ ├── addresses.ts # Program IDs │ ├── markets.ts # Known markets │ └── tokens.ts # Token metadata └── utils/ ├── format.ts # Number formatting ├── transaction.ts # TX builders └── websocket.ts # Account subscriptions stores/ ├── walletStore.ts # Wallet state ├── marketStore.ts # Market data cache └── uiStore.ts # UI preferences ``` ## Complete Instruction Reference ### Admin Instructions (9 total) | Instruction | Accounts | Parameters | UI Location | |------------|----------|------------|-------------| | `initialize` | payer, protocol_state, system_program | owner, fee_recipient | One-time setup | | `transfer_ownership` | owner, protocol_state | new_owner | Admin → Protocol | | `accept_ownership` | pending_owner, protocol_state | - | Admin → Protocol | | `set_fee_recipient` | owner, protocol_state | new_recipient | Admin → Protocol | | `set_protocol_paused` | owner, protocol_state | paused | Admin → Protocol | | `set_market_paused` | owner, protocol_state, market | market_id, paused | Admin → Markets | | `enable_lltv` | owner, protocol_state | lltv | Admin → Whitelist | | `enable_irm` | owner, protocol_state | irm | Admin → Whitelist | | `set_fee` | owner, protocol_state, market | market_id, fee | Admin → Markets | ### Market Instructions (1 total) | Instruction | Accounts | Parameters | UI Location | |------------|----------|------------|-------------| | `create_market` | creator, protocol_state, market, collateral_mint, loan_mint, collateral_vault, loan_vault, oracle, irm, token_program, system_program | collateral_mint, loan_mint, oracle, irm, lltv | Markets → Create | ### Position Instructions (2 total) | Instruction | Accounts | Parameters | UI Location | |------------|----------|------------|-------------| | `create_position` | payer, owner, market, position, system_program | market_id | Auto-prepend | | `close_position` | owner, rent_receiver, position | market_id | Dashboard | ### Supply Instructions (2 total) | Instruction | Accounts | Parameters | UI Location | |------------|----------|------------|-------------| | `supply` | supplier, protocol_state, market, position, on_behalf_of, supplier_token_account, loan_vault, loan_mint, token_program | market_id, assets, min_shares | Market → Supply | | `withdraw` | caller, protocol_state, market, position, authorization (optional), receiver_token_account, loan_vault, loan_mint, token_program | market_id, assets, shares | Market → Withdraw | ### Borrow Instructions (4 total) | Instruction | Accounts | Parameters | UI Location | |------------|----------|------------|-------------| | `supply_collateral` | depositor, protocol_state, market, position, on_behalf_of, depositor_token_account, collateral_vault, collateral_mint, token_program | market_id, amount | Market → Collateral | | `withdraw_collateral` | caller, protocol_state, market, position, authorization (optional), oracle, receiver_token_account, collateral_vault, collateral_mint, token_program | market_id, amount | Market → Collateral | | `borrow` | caller, protocol_state, market, position, authorization (optional), oracle, receiver_token_account, loan_vault, loan_mint, token_program | market_id, assets, max_shares | Market → Borrow | | `repay` | repayer, market, position, on_behalf_of, repayer_token_account, loan_vault, loan_mint, token_program | market_id, assets, shares | Market → Repay | ### Liquidation Instructions (1 total) | Instruction | Accounts | Parameters | UI Location | |------------|----------|------------|-------------| | `liquidate` | liquidator, market, borrower_position, borrower, oracle, liquidator_loan_account, liquidator_collateral_account, loan_vault, collateral_vault, loan_mint, collateral_mint, token_program | market_id, seized_assets | Market → Liquidate | ### Flash Loan Instructions (3 total) | Instruction | Accounts | Parameters | UI Location | |------------|----------|------------|-------------| | `flash_loan_start` | borrower, protocol_state, market, borrower_token_account, loan_vault, loan_mint, token_program | market_id, amount | Flash Loans | | `flash_loan_end` | borrower, market, borrower_token_account, loan_vault, loan_mint, token_program | market_id, borrowed_amount | Flash Loans | | `flash_loan` | borrower, protocol_state, market, borrower_token_account, loan_vault, loan_mint, token_program | market_id, amount | Flash Loans | ### Utility Instructions (4 total) | Instruction | Accounts | Parameters | UI Location | |------------|----------|------------|-------------| | `accrue_interest_ix` | market | market_id | Auto-called | | `set_authorization` | authorizer, authorized, authorization, system_program | is_authorized, expires_at | Settings → Auth | | `revoke_authorization` | authorizer, authorization | - | Settings → Auth | | `claim_fees` | protocol_state, market, fee_position | market_id | Admin → Markets | ## Implementation Guide ### Step 1: Setup Anchor Client ```typescript // lib/anchor/client.ts import { Program, AnchorProvider, Idl } from '@coral-xyz/anchor'; import { Connection, PublicKey } from '@solana/web3.js'; import { AnchorWallet } from '@solana/wallet-adapter-react'; import IDL from './idl.json'; export const MORPHO_PROGRAM_ID = new PublicKey('YOUR_PROGRAM_ID'); export function getMorphoProgram( connection: Connection, wallet: AnchorWallet ) { const provider = new AnchorProvider(connection, wallet, { commitment: 'confirmed', }); return new Program(IDL as Idl, MORPHO_PROGRAM_ID, provider); } // Derive PDAs export const PROGRAM_SEED = Buffer.from('morpho'); export function getProtocolStatePDA() { return PublicKey.findProgramAddressSync( [PROGRAM_SEED, Buffer.from('protocol_state')], MORPHO_PROGRAM_ID ); } export function getMarketPDA( collateralMint: PublicKey, loanMint: PublicKey, oracle: PublicKey, irm: PublicKey, lltv: number ) { const marketId = calculateMarketId(collateralMint, loanMint, oracle, irm, lltv); return PublicKey.findProgramAddressSync( [PROGRAM_SEED, Buffer.from('market'), marketId], MORPHO_PROGRAM_ID ); } export function getPositionPDA( marketId: Buffer, owner: PublicKey ) { return PublicKey.findProgramAddressSync( [PROGRAM_SEED, Buffer.from('position'), marketId, owner.toBuffer()], MORPHO_PROGRAM_ID ); } export function getAuthorizationPDA( authorizer: PublicKey, authorized: PublicKey ) { return PublicKey.findProgramAddressSync( [ PROGRAM_SEED, Buffer.from('authorization'), authorizer.toBuffer(), authorized.toBuffer() ], MORPHO_PROGRAM_ID ); } // Market ID calculation (keccak256) import { keccak256 } from 'js-sha3'; export function calculateMarketId( collateralMint: PublicKey, loanMint: PublicKey, oracle: PublicKey, irm: PublicKey, lltv: number ): Buffer { const data = Buffer.concat([ collateralMint.toBuffer(), loanMint.toBuffer(), oracle.toBuffer(), irm.toBuffer(), Buffer.from(new BN(lltv).toArray('le', 8)) ]); return Buffer.from(keccak256(data), 'hex'); } ``` ### Step 2: Core Instruction Builders ```typescript // lib/anchor/instructions/supply.ts import { BN } from '@coral-xyz/anchor'; import { PublicKey, TransactionInstruction } from '@solana/web3.js'; import { getAssociatedTokenAddress } from '@solana/spl-token'; export async function buildSupplyInstruction( program: Program, marketId: Buffer, supplier: PublicKey, onBehalfOf: PublicKey, assets: BN, minShares: BN ): Promise { const [protocolState] = getProtocolStatePDA(); const [market] = getMarketPDA(/* derive from marketId */); const [position] = getPositionPDA(marketId, onBehalfOf); const marketAccount = await program.account.market.fetch(market); const supplierTokenAccount = await getAssociatedTokenAddress( marketAccount.loanMint, supplier ); const [loanVault] = PublicKey.findProgramAddressSync( [PROGRAM_SEED, Buffer.from('loan_vault'), marketId], MORPHO_PROGRAM_ID ); return program.methods .supply(Array.from(marketId), assets, minShares) .accounts({ supplier, protocolState, market, position, onBehalfOf, supplierTokenAccount, loanVault, loanMint: marketAccount.loanMint, tokenProgram: TOKEN_PROGRAM_ID, }) .instruction(); } export async function buildWithdrawInstruction( program: Program, marketId: Buffer, caller: PublicKey, positionOwner: PublicKey, receiver: PublicKey, assets: BN, shares: BN, authorization?: PublicKey ): Promise { // Similar structure to supply // Key difference: assets OR shares (not both) // Include authorization account if caller != positionOwner return program.methods .withdraw(Array.from(marketId), assets, shares) .accounts({ caller, protocolState, market, position, authorization: authorization || null, receiverTokenAccount, loanVault, loanMint, tokenProgram: TOKEN_PROGRAM_ID, }) .instruction(); } ``` ```typescript // lib/anchor/instructions/borrow.ts export async function buildBorrowInstruction( program: Program, marketId: Buffer, caller: PublicKey, positionOwner: PublicKey, receiver: PublicKey, assets: BN, maxShares: BN, oracle: PublicKey, authorization?: PublicKey ): Promise { const [market] = getMarketPDA(/* ... */); const [position] = getPositionPDA(marketId, positionOwner); const marketAccount = await program.account.market.fetch(market); return program.methods .borrow(Array.from(marketId), assets, maxShares) .accounts({ caller, protocolState, market, position, authorization: authorization || null, oracle, receiverTokenAccount, loanVault, loanMint: marketAccount.loanMint, tokenProgram: TOKEN_PROGRAM_ID, }) .instruction(); } export async function buildRepayInstruction( program: Program, marketId: Buffer, repayer: PublicKey, onBehalfOf: PublicKey, assets: BN, shares: BN ): Promise { // Similar to withdraw: assets OR shares return program.methods .repay(Array.from(marketId), assets, shares) .accounts({ repayer, market, position, onBehalfOf, repayerTokenAccount, loanVault, loanMint, tokenProgram: TOKEN_PROGRAM_ID, }) .instruction(); } ``` ```typescript // lib/anchor/instructions/flashLoan.ts export async function buildFlashLoanInstruction( program: Program, marketId: Buffer, borrower: PublicKey, amount: BN ): Promise { // Single-instruction flash loan // Repayment validated automatically via vault reload return program.methods .flashLoan(Array.from(marketId), amount) .accounts({ borrower, protocolState, market, borrowerTokenAccount, loanVault, loanMint, tokenProgram: TOKEN_PROGRAM_ID, }) .instruction(); } export async function buildFlashLoanStartInstruction( program: Program, marketId: Buffer, borrower: PublicKey, amount: BN ): Promise { // Two-step: start (locks market, transfers out) return program.methods .flashLoanStart(Array.from(marketId), amount) .accounts({ borrower, protocolState, market, borrowerTokenAccount, loanVault, loanMint, tokenProgram: TOKEN_PROGRAM_ID, }) .instruction(); } export async function buildFlashLoanEndInstruction( program: Program, marketId: Buffer, borrower: PublicKey, borrowedAmount: BN ): Promise { // Two-step: end (validates repayment, unlocks market) return program.methods .flashLoanEnd(Array.from(marketId), borrowedAmount) .accounts({ borrower, market, borrowerTokenAccount, loanVault, loanMint, tokenProgram: TOKEN_PROGRAM_ID, }) .instruction(); } ``` ### Step 3: Position Auto-Creation ```typescript // lib/utils/transaction.ts export async function ensurePositionExists( program: Program, marketId: Buffer, owner: PublicKey ): Promise { const [position] = getPositionPDA(marketId, owner); try { await program.account.position.fetch(position); return null; // Position exists } catch (e) { // Position doesn't exist, create it return program.methods .createPosition(Array.from(marketId)) .accounts({ payer: owner, owner, market: getMarketPDA(/* ... */)[0], position, systemProgram: SystemProgram.programId, }) .instruction(); } } // Usage in any instruction that needs position export async function buildSupplyTransactionWithPosition( program: Program, marketId: Buffer, supplier: PublicKey, onBehalfOf: PublicKey, assets: BN, minShares: BN ): Promise { const instructions: TransactionInstruction[] = []; // Prepend create_position if needed const createPosIx = await ensurePositionExists(program, marketId, onBehalfOf); if (createPosIx) { instructions.push(createPosIx); } // Add supply instruction const supplyIx = await buildSupplyInstruction( program, marketId, supplier, onBehalfOf, assets, minShares ); instructions.push(supplyIx); return instructions; } ``` ### Step 4: React Hooks for Data Fetching ```typescript // lib/hooks/useMarkets.ts import { useQuery } from '@tanstack/react-query'; import { useConnection } from '@solana/wallet-adapter-react'; export function useMarkets() { const { connection } = useConnection(); return useQuery({ queryKey: ['markets'], queryFn: async () => { const program = getMorphoProgram(connection, /* ... */); // Fetch all Market accounts const markets = await program.account.market.all(); // Enrich with APY calculations, TVL, etc. return Promise.all( markets.map(async (m) => { const supplyAPY = await calculateSupplyAPY(m.account); const borrowAPY = await calculateBorrowAPY(m.account); const tvl = calculateTVL(m.account); return { publicKey: m.publicKey, account: m.account, supplyAPY, borrowAPY, tvl, }; }) ); }, refetchInterval: 10_000, // Refresh every 10s }); } // lib/hooks/usePosition.ts export function usePosition(marketId: Buffer, owner?: PublicKey) { const { connection } = useConnection(); const { publicKey } = useWallet(); const positionOwner = owner || publicKey; return useQuery({ queryKey: ['position', marketId.toString('hex'), positionOwner?.toString()], queryFn: async () => { if (!positionOwner) return null; const program = getMorphoProgram(connection, /* ... */); const [position] = getPositionPDA(marketId, positionOwner); try { const account = await program.account.position.fetch(position); // Fetch parent market for calculations const [market] = getMarketPDA(/* ... */); const marketAccount = await program.account.market.fetch(market); // Calculate current values const supplyAssets = toAssetsDown( account.supplyShares, marketAccount.totalSupplyAssets, marketAccount.totalSupplyShares ); const borrowAssets = toAssetsUp( account.borrowShares, marketAccount.totalBorrowAssets, marketAccount.totalBorrowShares ); // Calculate health factor const healthFactor = calculateHealthFactor( account.collateral, borrowAssets, marketAccount.lltv, oraclePrice // fetch from oracle ); return { publicKey: position, account, supplyAssets, borrowAssets, healthFactor, }; } catch (e) { return null; // Position doesn't exist } }, enabled: !!positionOwner, refetchInterval: 5_000, }); } ``` ### Step 5: WebSocket Subscriptions ```typescript // lib/utils/websocket.ts import { Connection, PublicKey } from '@solana/web3.js'; export function subscribeToPosition( connection: Connection, positionPubkey: PublicKey, callback: (accountInfo: any) => void ): number { return connection.onAccountChange( positionPubkey, (accountInfo) => { callback(accountInfo); }, 'confirmed' ); } // Usage in React component export function usePositionSubscription(positionPubkey?: PublicKey) { const { connection } = useConnection(); const queryClient = useQueryClient(); useEffect(() => { if (!positionPubkey) return; const subscriptionId = subscribeToPosition( connection, positionPubkey, () => { // Invalidate query to refetch queryClient.invalidateQueries(['position', positionPubkey.toString()]); } ); return () => { connection.removeAccountChangeListener(subscriptionId); }; }, [positionPubkey, connection, queryClient]); } ``` ### Step 6: Math Libraries (Client-side) ```typescript // lib/math/shares.ts import BN from 'bn.js'; const VIRTUAL_SHARES = new BN(1_000_000); // 1e6 const VIRTUAL_ASSETS = new BN(1); export function toSharesDown( assets: BN, totalAssets: BN, totalShares: BN ): BN { // shares = assets * (totalShares + VIRTUAL_SHARES) / (totalAssets + VIRTUAL_ASSETS) const numerator = assets.mul(totalShares.add(VIRTUAL_SHARES)); const denominator = totalAssets.add(VIRTUAL_ASSETS); return numerator.div(denominator); } export function toSharesUp( assets: BN, totalAssets: BN, totalShares: BN ): BN { const numerator = assets.mul(totalShares.add(VIRTUAL_SHARES)); const denominator = totalAssets.add(VIRTUAL_ASSETS); // Ceiling division: (a + b - 1) / b return numerator.add(denominator).sub(new BN(1)).div(denominator); } export function toAssetsDown( shares: BN, totalAssets: BN, totalShares: BN ): BN { // assets = shares * (totalAssets + VIRTUAL_ASSETS) / (totalShares + VIRTUAL_SHARES) const numerator = shares.mul(totalAssets.add(VIRTUAL_ASSETS)); const denominator = totalShares.add(VIRTUAL_SHARES); return numerator.div(denominator); } export function toAssetsUp( shares: BN, totalAssets: BN, totalShares: BN ): BN { const numerator = shares.mul(totalAssets.add(VIRTUAL_ASSETS)); const denominator = totalShares.add(VIRTUAL_SHARES); return numerator.add(denominator).sub(new BN(1)).div(denominator); } // lib/math/health.ts export function calculateHealthFactor( collateral: BN, borrowAssets: BN, lltv: number, // basis points oraclePrice: BN // scaled 1e36 ): number { if (borrowAssets.isZero()) return Infinity; // maxBorrow = collateral * price * lltv / 1e36 / 10000 const maxBorrow = collateral .mul(oraclePrice) .mul(new BN(lltv)) .div(new BN(10).pow(new BN(36))) .div(new BN(10000)); // healthFactor = maxBorrow / borrowAssets return maxBorrow.mul(new BN(1000)).div(borrowAssets).toNumber() / 1000; } export function isLiquidatable( collateral: BN, borrowShares: BN, totalBorrowAssets: BN, totalBorrowShares: BN, oraclePrice: BN, lltv: number ): boolean { const borrowAssets = toAssetsUp(borrowShares, totalBorrowAssets, totalBorrowShares); const healthFactor = calculateHealthFactor(collateral, borrowAssets, lltv, oraclePrice); return healthFactor < 1.0; } // lib/math/liquidation.ts export function calculateLIF(lltv: number): number { // LIF = min(1.15, 1 / (1 - 0.3 * (1 - lltv/10000))) const lltvDecimal = lltv / 10000; const baseLIF = 1 / (1 - 0.3 * (1 - lltvDecimal)); return Math.min(1.15, baseLIF); } export function calculateSeizedCollateral( seizedAssets: BN, oraclePrice: BN, // 1e36 lif: number ): BN { // seizedCollateral = seizedAssets * LIF * 1e36 / price const lifScaled = new BN(Math.floor(lif * 1000)); // Scale LIF by 1000 return seizedAssets .mul(lifScaled) .mul(new BN(10).pow(new BN(36))) .div(oraclePrice) .div(new BN(1000)); } ``` ## Component Implementation Examples ### Supply Tab ```typescript // components/market/tabs/SupplyTab.tsx 'use client'; import { useState } from 'react'; import { BN } from '@coral-xyz/anchor'; import { useWallet } from '@solana/wallet-adapter-react'; import { Input } from '@/components/ui/input'; import { Button } from '@/components/ui/button'; import { buildSupplyTransactionWithPosition } from '@/lib/anchor/instructions/supply'; import { toSharesDown } from '@/lib/math/shares'; export function SupplyTab({ marketId, market }: Props) { const { publicKey, sendTransaction } = useWallet(); const [amount, setAmount] = useState(''); const [loading, setLoading] = useState(false); const handleSupply = async () => { if (!publicKey || !amount) return; setLoading(true); try { const assets = new BN(parseFloat(amount) * 10 ** market.loanDecimals); // Calculate min shares with 1% slippage const expectedShares = toSharesDown( assets, market.totalSupplyAssets, market.totalSupplyShares ); const minShares = expectedShares.mul(new BN(99)).div(new BN(100)); // Build transaction with auto position creation const instructions = await buildSupplyTransactionWithPosition( program, marketId, publicKey, publicKey, // on_behalf_of assets, minShares ); const tx = new Transaction().add(...instructions); const signature = await sendTransaction(tx, connection); await connection.confirmTransaction(signature, 'confirmed'); toast.success('Supply successful!'); } catch (error) { console.error(error); toast.error('Supply failed'); } finally { setLoading(false); } }; return (
setAmount(e.target.value)} placeholder="0.00" />
Balance: {userBalance} {market.loanSymbol}
You'll receive {expectedShares.toString()} shares
Supply APY {supplyAPY}%
); } ``` ### Health Factor Component ```typescript // components/position/HealthFactor.tsx export function HealthFactorBar({ healthFactor }: { healthFactor: number }) { const getColor = (hf: number) => { if (hf > 1.5) return 'bg-green-500'; if (hf > 1.2) return 'bg-yellow-500'; if (hf > 1.05) return 'bg-orange-500'; return 'bg-red-500'; }; const getLabel = (hf: number) => { if (hf > 1.5) return 'Safe'; if (hf > 1.2) return 'Caution'; if (hf > 1.05) return 'Warning'; return 'Critical'; }; const percentage = Math.min((healthFactor / 2) * 100, 100); return (
Health Factor {healthFactor.toFixed(2)}
{getLabel(healthFactor)} Liquidation at <1.0
); } ``` ### Authorization Tab ```typescript // components/market/tabs/AuthorizationTab.tsx export function AuthorizationTab() { const { publicKey } = useWallet(); const [authorized, setAuthorized] = useState(''); const [expiresAt, setExpiresAt] = useState(null); const [neverExpires, setNeverExpires] = useState(false); const { data: authorizations } = useAuthorizations(publicKey); const handleGrant = async () => { if (!publicKey || !authorized) return; const expiryTimestamp = neverExpires ? Number.MAX_SAFE_INTEGER : Math.floor((expiresAt?.getTime() || Date.now()) / 1000); const ix = await buildSetAuthorizationInstruction( program, publicKey, new PublicKey(authorized), true, new BN(expiryTimestamp) ); // Send transaction... }; const handleRevoke = async (authPubkey: PublicKey) => { const ix = await buildRevokeAuthorizationInstruction( program, publicKey, authPubkey ); // Send transaction... }; return (
Grant New Authorization
setAuthorized(e.target.value)} placeholder="Enter Solana address" />
setNeverExpires(checked as boolean)} > Never expires {!neverExpires && ( )}
Active Authorizations {authorizations?.map((auth) => (

{auth.account.authorized.toString()}

{auth.account.isRevoked ? ( Revoked × ) : ( Active ✓ )}

Expires: {formatDate(auth.account.expiresAt)}

{!auth.account.isRevoked && ( )}
))}
); } ``` ## Critical Implementation Notes ### 1. Assets vs Shares Flexibility ```typescript // withdraw() and repay() accept EITHER assets OR shares // UI should provide toggle: function WithdrawTab() { const [mode, setMode] = useState<'assets' | 'shares'>('assets'); const [amount, setAmount] = useState(''); const handleWithdraw = async () => { const assets = mode === 'assets' ? new BN(amount) : new BN(0); const shares = mode === 'shares' ? new BN(amount) : new BN(0); const ix = await buildWithdrawInstruction( program, marketId, publicKey, publicKey, publicKey, assets, shares ); // Send... }; return (
By Amount By Shares setAmount(e.target.value)} placeholder={mode === 'assets' ? 'Amount' : 'Shares'} />
); } ``` ### 2. Flash Loan Lock Warning ```typescript // When building flash loan transactions, warn user: function FlashLoanTab() { return ( Flash Loan Active During a flash loan, the market is LOCKED (flash_loan_lock = 1). No other operations can occur until the loan is repaid and lock released. Single-instruction mode: Repayment is automatic via vault reload. Two-step mode: You MUST call flash_loan_end() to unlock. ); } ``` ### 3. Authorization Validation ```typescript // Before allowing delegated operations, check authorization: async function checkAuthorization( program: Program, caller: PublicKey, owner: PublicKey ): Promise { if (caller.equals(owner)) return true; const [authPDA] = getAuthorizationPDA(owner, caller); try { const auth = await program.account.authorization.fetch(authPDA); const now = Math.floor(Date.now() / 1000); return ( auth.isAuthorized && !auth.isRevoked && auth.expiresAt > now ); } catch { return false; } } // Usage in withdraw: function WithdrawTab({ positionOwner }) { const { publicKey } = useWallet(); const canWithdraw = await checkAuthorization(program, publicKey, positionOwner); if (!canWithdraw) { return
You don't have permission to withdraw from this position
; } // Render withdraw UI... } ``` ### 4. Admin Access Control **CRITICAL: Admin routes must verify wallet = protocol owner** ```typescript // lib/hooks/useProtocolOwner.ts import { useQuery } from '@tanstack/react-query'; import { useConnection } from '@solana/wallet-adapter-react'; import { PublicKey } from '@solana/web3.js'; export function useProtocolOwner() { const { connection } = useConnection(); return useQuery({ queryKey: ['protocol-owner'], queryFn: async () => { const program = getMorphoProgram(connection); const [protocolState] = getProtocolStatePDA(); const state = await program.account.protocolState.fetch(protocolState); return state.owner as PublicKey; }, staleTime: 60_000, // Cache for 1 minute }); } // lib/hooks/useIsAdmin.ts import { useMemo } from 'react'; import { useWallet } from '@solana/wallet-adapter-react'; import { useProtocolOwner } from './useProtocolOwner'; export function useIsAdmin(): boolean | undefined { const { publicKey } = useWallet(); const { data: owner, isLoading } = useProtocolOwner(); return useMemo(() => { if (isLoading) return undefined; // Loading state if (!publicKey || !owner) return false; return publicKey.equals(owner); }, [publicKey, owner, isLoading]); } // app/(admin)/admin/layout.tsx - Admin Route Wrapper 'use client'; import { useWallet } from '@solana/wallet-adapter-react'; import { useIsAdmin } from '@/lib/hooks/useIsAdmin'; import { useProtocolOwner } from '@/lib/hooks/useProtocolOwner'; import { useRouter } from 'next/navigation'; import { useEffect } from 'react'; import { AlertTriangle, Lock } from 'lucide-react'; export default function AdminLayout({ children }: { children: React.ReactNode }) { const { publicKey } = useWallet(); const isAdmin = useIsAdmin(); const { data: owner } = useProtocolOwner(); const router = useRouter(); useEffect(() => { if (publicKey && isAdmin === false) { // Not admin, redirect to home router.push('/'); } }, [publicKey, isAdmin, router]); // No wallet connected if (!publicKey) { return (

Admin Access Required

Please connect your wallet to access the admin panel.

); } // Loading owner check if (isAdmin === undefined) { return (

Verifying admin access...

); } // Not an admin if (!isAdmin) { return (

Access Denied

Only the protocol owner can access the admin panel.

Protocol Owner:

{owner?.toString()}

Your wallet: {publicKey.toString()}

); } // Admin verified - render admin pages return ( < …(truncated)