nft-standards

Implement NFT standards (ERC-721, ERC-1155) with proper metadata handling, minting strategies, and marketplace integration. Use when creating NFT contracts, building NFT marketplaces, or implementing digital asset systems.

1.24x

Quality

68%

Does it follow best practices?

Impact

93%

1.24x

Average score across 3 eval scenarios

Securityby

Advisory

Suggest reviewing before use

Optimize this skill with Tessl

npx tessl skill review --optimize ./tests/ext_conformance/artifacts/agents-wshobson/blockchain-web3/skills/nft-standards/SKILL.md

Evaluation results

97%

Launch-Ready NFT Collection Contract

Gas-optimized minting with EIP-2981 royalties

Criteria

Without context

With context

ERC721A import

100%

ERC721A inheritance

100%

_totalMinted usage

100%

_baseURI override

100%

IPFS URI scheme

50%

IERC2981 import

100%

royaltyInfo function

100%

Basis-point royalty math

100%

Default royalty 5%

100%

Royalty max 10% enforced

100%

supportsInterface IERC2981

100%

OpenZeppelin usage

100%

82%

Blockchain Game Item System

ERC-1155 multi-token supply tracking and batch ops

Criteria

Without context

With context

OpenZeppelin ERC1155

100%

{id} placeholder URI

IPFS URI scheme

tokenSupply mapping

50%

100%

maxSupply mapping

100%

mintBatch supply validation

100%

mintBatch supply update

50%

100%

Burn authorization check

100%

Metadata name field

100%

Metadata attributes array

100%

Numeric attribute display_type

100%

Metadata image IPFS

100%

On-Chain Achievement Badge System

Soulbound tokens with on-chain Base64 SVG metadata

Criteria

Without context

With context

_beforeTokenTransfer override

90%

100%

Soulbound address(0) guard

100%

Burn function present

100%

Burn owner check

100%

tokenURI on-chain

100%

Base64 JSON encoding

100%

SVG image generation

100%

SVG as data URI in metadata

100%

Traits struct

100%

OpenZeppelin base

100%

Repository: Dicklesworthstone/pi_agent_rust
Commit: 47823e3

Evaluated: about 1 month ago
Agent: Claude Code
Model: Claude Sonnet 4.6

Table of Contents

Launch-Ready NFT Collection Contract Blockchain Game Item System On-Chain Achievement Badge System

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