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Implement NFT standards (ERC-721, ERC-1155) with proper metadata handling, minting strategies, and marketplace integration.
Passed 20 of 22 test cases with the skill, and 17 of 22 without it.
and 1 more in the full report
3 fixed17 passed either way2 still failing0 broke
Tokens, turns and time describe resource use, not a dollar price.
One of 3 test cases the skill fixed. Same model, same prompt, with and without the skill.
Format the `attributes` array of an OpenSea JSON metadata object for an item with a 'Background' string attribute and a 'Power' numeric attribute.
| Checked | Without skill | With skill |
|---|---|---|
| Includes array items with trait_type and value keys. | Passed | Passed |
| Includes max_value property on numeric trait item. | Missed | Passed |
The instructions your model reads when the skill loads.
Master ERC-721 and ERC-1155 NFT standards, metadata best practices, and advanced NFT features.
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
import "@openzeppelin/contracts/token/ERC721/extensions/ERC721URIStorage.sol";
import "@openzeppelin/contracts/token/ERC721/extensions/ERC721Enumerable.sol";
import "@openzeppelin/contracts/access/Ownable.sol";
import "@openzeppelin/contracts/utils/Counters.sol";
contract MyNFT is ERC721URIStorage, ERC721Enumerable, Ownable {
using Counters for Counters.Counter;
Counters.Counter private _tokenIds;
uint256 public constant MAX_SUPPLY = 10000;
uint256 public constant MINT_PRICE = 0.08 ether;
uint256 public constant MAX_PER_MINT = 20;
constructor() ERC721("MyNFT", "MNFT") {}
function mint(uint256 quantity) external payable {
require(quantity > 0 && quantity <= MAX_PER_MINT, "Invalid quantity");
require(_tokenIds.current() + quantity <= MAX_SUPPLY, "Exceeds max supply");
require(msg.value >= MINT_PRICE * quantity, "Insufficient payment");
for (uint256 i = 0; i < quantity; i++) {
test cases passed, vs 17 / 22 without
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