Screencast from 2025-08-09 20-11-25.webm

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TOKEN-2022 TRANSFER HOOK AMM IMPLEMENTATION SUMMARY

Project: Solana AMM with Token-2022 Transfer Hook Support Repository: Final_Assignment/AMM Date: 2024 Challenge: Enable Token-2022 with Transfer Hooks to be tradable on Solana AMM\

GIthub LInk-

https://github.com/ross2121/Token22

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🎯 OBJECTIVE ACHIEVED

PROBLEM ADDRESSED:

• No major AMMs (Raydium, Orca, Meteora) currently support trading Token-2022 with active transfer hooks
• This limits Token-2022 adoption as a DeFi primitive for RWA and enterprise use cases
• Need for programmable token behaviors (whitelisting, KYC gating, conditional transfers)

SOLUTION IMPLEMENTED: ✅ Built a new AMM that supports Token-2022 + Transfer Hook ✅ Created a whitelisted safe hook program for fee collection ✅ Implemented SOL + Token-2022 trading pairs ✅ Developed comprehensive UI for token creation and pool management ✅ Solved reentrancy issues with separate hook program architecture

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🏗️ TECHNICAL ARCHITECTURE

1. DUAL PROGRAM ARCHITECTURE:

   • AMM Program (3D6uyMfYh3s315PgTRJQNsTNYfThWKoCfUaG1we6ZC8c)
   • Transfer Hook Program (88CNX3Y7TyzjPtD76YhpmnPAsrmhSsYRVS5ad2wKMjuk)

   RATIONALE: Separate programs prevent reentrancy issues when AMM calls Token-2022 transfers that trigger transfer hooks.

2. TRANSFER HOOK IMPLEMENTATION:

   • Program: programs/transfer-hook/src/lib.rs
   • Function: Collects 0.1% WSOL fee on every token transfer
   • Mechanism: Uses delegate PDA to collect fees from user's WSOL-2022 account
   • Purpose: Demonstrates programmable transfer behavior for compliance/fees

3. AMM CORE FEATURES:

   • Pool Type: SOL + Token-2022 pairs (not two Token-2022 mints)
   • Supported Operations: Initialize, Deposit, Swap, Withdraw
   • Token Support: Native Token-2022 with active transfer hooks
   • Fee Structure: AMM trading fees + transfer hook fees

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📋 SUBMISSION REQUIREMENTS FULFILLED

✅ UI COMPONENTS IMPLEMENTED:

1. CREATE TOKEN-2022 WITH TRANSFER HOOK:
   • File: solana-hook-amm/components/create-hooked-token.tsx
   • Features:
     • Creates Token-2022 mint with transfer hook extension
     • Initializes ExtraAccountMetaList for hook requirements
     • Prepares delegate fee system with WSOL-2022
     • Shows success alerts with mint address and transaction ID
     • Pre-fills hook program ID (88CNX3Y7TyzjPtD76YhpmnPAsrmhSsYRVS5ad2wKMjuk)
2. CREATE LP POOL (SOL-TOKEN PAIR):
   • File: solana-hook-amm/components/create-pool.tsx
   • Features:
     • Creates SOL + Token-2022 liquidity pools
     • Auto-detects Token-2022 vs standard SPL tokens
     • Handles ExtraAccountMetaList integration
     • "Use Latest Created Token" auto-fill functionality
     • Unique seed generation to prevent account conflicts