Design Patterns MCP Server

{ "id": "atomic-swap", "name": "Atomic Swap (HTLC)", "category": "Cross-Chain", "description": "Hash Time-Locked Contracts for trustless cross-chain swaps. Both sides lock with same hash.", "when_to_use": "Trustless exchanges, cross-chain swaps, P2P trading", "benefits": "Trustless, no intermediary, atomic execution", "drawbacks": "Requires both chains online, timelock delays, UX complexity", "use_cases": "Bitcoin-Ethereum swaps, decentralized exchanges", "complexity": "Medium", "tags": [ "cross-chain", "atomic-swap", "htlc", "trustless" ], "examples": { "solidity": { "language": "solidity", "code": "// Hash Time-Locked Contract\nfunction lock(bytes32 hashlock, uint256 timelock) external payable {\n require(msg.value > 0);\n swaps[hashlock] = Swap({\n amount: msg.value,\n timelock: block.timestamp + timelock,\n sender: msg.sender\n });\n}\n\nfunction claim(bytes32 preimage) external {\n require(keccak256(abi.encodePacked(preimage)) == hashlock);\n payable(msg.sender).transfer(swaps[hashlock].amount);\n}" } } }