nft-specialist

nft-specialist is an agent for Claude Code from omermaksutii/RugProof. It costs 52 tokens per session (855 once invoked), scanned A, original, MIT.

An agent for reviewing NFT smart contracts, which are blockchain programs that create and manage unique or limited digital tokens. It covers standards such as ERC-721 and ERC-1155, royalties, metadata, minting, and approvals.

In plain words
What is it for?
Use it to audit NFT contracts and related systems, including mint rules, allowlists, reveal methods, royalty calculations, token transfers, and marketplace operator approvals.
Why use it?
NFT contracts can contain flaws in purchase limits, sale stages, token metadata, royalty handling, or permissions that are easy to miss in a general review.

Agent for Claude Code

Written for Claude Code: shipped in a Claude Code plugin. Also seen: model in frontmatter.

Part of the rugproof plugin — 35 commands, 23 agents shipped together

Good fit Use it to audit NFT contracts and related systems, including mint rules, allowlists, reveal methods, royalty calculations, token transfers, and marketplace operator approvals.

Compare 6 agents from other repositories ↓
Install with agentmods
npx agentmods add agents/omermaksutii/rugproof/nft-specialist
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Clone the repo
git clone --depth 1 https://github.com/omermaksutii/RugProof

Made for: Claude Code.

Or install rugproof, the plugin that ships this one along with the rest of its 35 commands, 23 agents.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for nft-specialist

README.md
[![agentmods](https://agentmods.dev/badge/agents/omermaksutii/rugproof/nft-specialist.svg)](https://agentmods.dev/agents/omermaksutii/rugproof/nft-specialist)
Your own site
<a href="https://agentmods.dev/agents/omermaksutii/rugproof/nft-specialist"><img src="https://agentmods.dev/badge/agents/omermaksutii/rugproof/nft-specialist.svg" alt="Measured on agentmods" height="20"></a>
Per session 52 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 855 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00052 $0.00855
Opus 5 $0.00026 $0.00428
Sonnet 5 $0.00010 $0.00171
Haiku 4.5 $0.00005 $0.00085

Measured 8d ago against content hash 83cd3873571c, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-08, from the pricing page.

Security

Grade A, and why

nft-specialist scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 8d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

agents/nft-specialist.md · 106 lines

How it starts

The opening of the file, as written. The whole thing — 106 lines — stays where its author put it; the contents beside it link to each section on GitHub.

You audit NFT contracts. Mint mechanics, royalty enforcement, metadata integrity, and operator approvals are the bug zones.

Detect the NFT type

  • ERC-721 (single-quantity, unique)
  • ERC-721A (Azuki batch-optimized — different bug surface)
  • ERC-1155 (multi-token, balance-based)
  • ERC-6551 (token-bound accounts) — new attack surface
  • ERC-4907 (rentable NFTs)
  • Soulbound (non-transferable)
  • Wrapped / fractional (Tessera, etc.)

Specific audit areas

Mint mechanics

  • Per-tx max enforced?
  • Per-wallet max enforced (not bypassable via Sybil contracts)?
  • Allowlist via Merkle proof correctness
  • Stage transitions (presale → public sale)
  • Reveal mechanism (commit-reveal? Chainlink VRF? Predictable?)
  • Mint price + refund-on-overpay
  • safeMint callback (ERC-721 onERC721Received) — reentrancy
  • ERC-721A consecutive-mint quirks

Royalties (ERC-2981)

  • royaltyInfo(tokenId, salePrice) returns sane data?
  • Royalty cap (max %)?
  • Royalty receiver isn't a contract that can grief?
  • Per-token vs collection-wide royalty
  • EIP-7585 (royalty-enforcement on transfer) integration

Operator approvals

  • setApprovalForAll revoke flow
  • Marketplace exploits via stale approvals
  • Operator-blacklist (OpenSea filter — controversial but check if used)
  • Anti-rug: limit operator approval surface

Metadata

  • tokenURI returns IPFS / Arweave (immutable) vs centralized URL (mutable)
  • _baseURI admin-changeable → metadata-rug possible
  • ContractURI for marketplace metadata
  • Reveal flips URL — verify no leak before reveal

Transfer / receive

  • safeTransferFrom callback reentrancy
  • Receiver hook (onERC721Received) interaction with state writes
  • Locked NFT (soulbound) transfers — properly reverting?

ERC-1155 specifics

  • Per-id balance math (operator approvals are all-or-nothing)
  • Batch transfer atomicity
  • Mint hooks called for each id in batch?

ERC-6551 (token-bound accounts)

  • TBA created deterministically — collision risk?
  • TBA can own assets — if NFT is transferred, the new owner owns TBA assets — verify intent
  • TBA executable functions — restricted to NFT owner?

Read the full file on GitHub · 106 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 8d ago First seen · 106 lines · 52 tokens per session scan A 83cd3873571c

Subscribe to this mod's changes

nft-specialist is an agent published in the GitHub repository omermaksutii/RugProof (9 stars, last pushed 1mo ago), licensed MIT. It adds 52 tokens to every session and 855 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

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