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Master NFT development with token standards, metadata, marketplaces, and on-chain art
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インストールを決める前に、SKILL.md と SkillsMP に表示されている付属ファイルをお読みください。
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npx skills add https://github.com/pluginagentmarketplace/custom-plugin-blockchain --skill nft-developmentコマンドは1行のまま表示されます。コピー前に横へスクロールして全体を確認してください。
ローカルで確認しますか？SkillsMP が現在取得できるファイルをダウンロードできます。
Master blockchain fundamentals including consensus, cryptography, and distributed systems
Master DeFi protocol development including AMMs, lending, yield, and oracles
Master Ethereum development including EVM, gas optimization, and client interactions
SOC 職業分類に基づく
SKILL.md を表示中
| name | nft-development |
| description | Master NFT development with token standards, metadata, marketplaces, and on-chain art |
| sasmp_version | 1.3.0 |
| version | 2.0.0 |
| updated | 2025-01 |
| bonded_agent | 07-nft-development |
| bond_type | PRIMARY_BOND |
| atomic | true |
| single_responsibility | nft_development |
| parameters | {"topic":{"type":"string","required":true,"enum":["standards","metadata","marketplace","onchain"]},"standard":{"type":"string","default":"ERC721","enum":["ERC721","ERC721A","ERC1155","DN404"]}} |
| retry_config | {"max_attempts":3,"backoff":"exponential","initial_delay_ms":1000} |
| logging | {"level":"info","include_timestamps":true,"track_usage":true} |
Master NFT development with token standards, metadata design, marketplace integration, and on-chain generative art.
# Invoke this skill for NFT development
Skill("nft-development", topic="standards", standard="ERC721A")
Choose the right standard:
Structure your NFT data:
List and sell NFTs:
Generate art in Solidity:
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.24;
import "erc721a/contracts/ERC721A.sol";
import "@openzeppelin/contracts/access/Ownable.sol";
contract MyNFT is ERC721A, Ownable {
uint256 public constant MAX_SUPPLY = 10000;
uint256 public constant PRICE = 0.08 ether;
error MaxSupplyReached();
error InsufficientPayment();
constructor() ERC721A("MyNFT", "MNFT") Ownable(msg.sender) {}
function mint(uint256 quantity) external payable {
if (_totalMinted() + quantity > MAX_SUPPLY) revert MaxSupplyReached();
if (msg.value < PRICE * quantity) revert InsufficientPayment();
_mint(msg.sender, quantity);
}
function _startTokenId() internal pure override returns (uint256) {
return 1;
}
}
function tokenURI(uint256 tokenId) public view returns (string memory) {
uint256 seed = seeds[tokenId];
string memory svg = string(abi.encodePacked(
'<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 400 400">',
'<rect width="400" height="400" fill="#', _getColor(seed), '"/>',
'<circle cx="200" cy="200" r="80" fill="#', _getColor(seed >> 24), '"/>',
'</svg>'
));
string memory json = string(abi.encodePacked(
'{"name":"Art #', tokenId.toString(),
'","image":"data:image/svg+xml;base64,', Base64.encode(bytes(svg)), '"}'
));
return string(abi.encodePacked(
"data:application/json;base64,",
Base64.encode(bytes(json))
));
}
import "@openzeppelin/contracts/token/common/ERC2981.sol";
contract NFTWithRoyalty is ERC721A, ERC2981 {
constructor() {
_setDefaultRoyalty(msg.sender, 500); // 5%
}
function supportsInterface(bytes4 interfaceId)
public view override(ERC721A, ERC2981)
returns (bool)
{
return super.supportsInterface(interfaceId);
}
}
{
"name": "Cool NFT #1",
"description": "A very cool NFT",
"image": "ipfs://QmXxx.../1.png",
"animation_url": "ipfs://QmXxx.../1.mp4",
"external_url": "https://example.com/1",
"attributes": [
{ "trait_type": "Background", "value": "Blue" },
{ "trait_type": "Rarity", "value": "Legendary" },
{ "display_type": "number", "trait_type": "Power", "value": 100 }
]
}
| Standard | Best For | Gas (1 mint) | Gas (5 mints) |
|---|---|---|---|
| ERC-721 | Simple NFTs | ~100k | ~500k |
| ERC-721A | PFP collections | ~100k | ~120k |
| ERC-1155 | Game items | ~50k | ~80k |
| Pitfall | Issue | Solution |
|---|---|---|
| Metadata not showing | Bad tokenURI | Validate JSON, check CORS |
| Gas too high | Standard ERC-721 | Use ERC-721A for batches |
| Royalties not paid | Marketplaces ignore | Use operator filter |
| Reveal broken | Wrong base URI | Test on testnet first |
curl "https://api.opensea.io/api/v2/chain/ethereum/contract/{addr}/nfts/{id}/refresh"
Implement operator filter:
import "operator-filter-registry/src/DefaultOperatorFilterer.sol";
function setApprovalForAll(address op, bool approved)
public override onlyAllowedOperatorApproval(op)
{
super.setApprovalForAll(op, approved);
}
| Technique | Savings |
|---|---|
| ERC721A batching | ~80% for batches |
| Merkle whitelist | ~50% vs mapping |
| Packed storage | ~20k per slot |
| Custom errors | ~200 per error |
07-nft-developmentsolidity-development, web3-frontend| Version | Date | Changes |
|---|---|---|
| 2.0.0 | 2025-01 | Production-grade with standards, on-chain |
| 1.0.0 | 2024-12 | Initial release |