getNFTOwner

Get the current owner of a specific ERC721 NFT token. Returns the Ethereum address that owns the specified token ID.

SERVERMCP Ethers Wallet SOURCEcrazyrabbitltc/mcp-ethers-server

Low RISK CLASS

Category Read

Parameters 00 required

Recommended Allowedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/crazyrabbitltc-mcp-ethers-server/getnftowner.md

WHAT IT DOES

What getNFTOwner does on MCP Ethers Wallet

AI agents call getNFTOwner to retrieve information from MCP Ethers Wallet without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

RISK

Why getNFTOwner is rated Low

This tool queries blockchain data (NFT ownership) without creating, modifying, deleting, or executing any transactions. It is a simple read operation that retrieves publicly available blockchain information. While the server grants access to a wallet and blockchain interactions, this specific tool has no capability to move funds, execute code, modify state, or trigger external operations—it only fetches data.

From the tool's definition Tool name and description indicate a read-only query operation: 'Get the current owner' and 'Returns the Ethereum address' perform data retrieval with no state modification or side effects.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs getNFTOwner safely

PolicyLayer is an MCP gateway: it sits between your AI agents and MCP Ethers Wallet, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For getNFTOwner, this is the rule to start with:

getNFTOwner Allowed

getNFTOwner is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "getNFTOwner": {}
  }
}

ALLOW ONLY THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect MCP Ethers Wallet, apply this rule, and every getNFTOwner call is checked against it from then on.

FAQ

Questions about getNFTOwner

What does the getNFTOwner tool do? +

Get the current owner of a specific ERC721 NFT token. Returns the Ethereum address that owns the specified token ID. It is categorised as a Read tool in the MCP Ethers Wallet MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on getNFTOwner? +

Register the MCP Ethers Wallet MCP server in PolicyLayer and add a rule for getNFTOwner: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches MCP Ethers Wallet. Nothing to install.

What risk level is getNFTOwner? +

getNFTOwner is a Read tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit getNFTOwner? +

Yes. Add a rate_limit block to the getNFTOwner rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.

How do I block getNFTOwner completely? +

Set action: deny in the PolicyLayer policy for getNFTOwner. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.

What MCP server provides getNFTOwner? +

getNFTOwner is provided by the MCP Ethers Wallet MCP server (crazyrabbitltc/mcp-ethers-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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