erc721_tokenURI

A read tool on the MCP Ethers Wallet MCP server.

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/erc721-tokenuri.md

WHAT IT DOES

What erc721_tokenURI does on MCP Ethers Wallet

AI agents call erc721_tokenURI 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 erc721_tokenURI is rated Low

ERC-721 tokenURI is a view function that returns metadata pointers for NFTs without modifying state or executing side effects. This is a read-only blockchain query with no blast radius for misuse—an agent cannot harm wallets, funds, or data by calling this function. Confidence is slightly reduced due to empty description, but the method name is unambiguous and consistent with standard Ethereum token standards.

From the tool's definition Tool name 'erc721_tokenURI' indicates a query operation that retrieves metadata URI for an ERC-721 token. The naming convention mirrors standard read-only ERC-721 contract queries.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs erc721_tokenURI 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 erc721_tokenURI, this is the rule to start with:

erc721_tokenURI Allowed

erc721_tokenURI 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": {
    "erc721_tokenURI": {}
  }
}

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 erc721_tokenURI call is checked against it from then on.

FAQ

Questions about erc721_tokenURI

What does the erc721_tokenURI tool do? +

erc721_tokenURI is a read tool on the MCP Ethers Wallet MCP server. 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 erc721_tokenURI? +

Register the MCP Ethers Wallet MCP server in PolicyLayer and add a rule for erc721_tokenURI: 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 erc721_tokenURI? +

erc721_tokenURI is a Read tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit erc721_tokenURI? +

Yes. Add a rate_limit block to the erc721_tokenURI 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 erc721_tokenURI completely? +

Set action: deny in the PolicyLayer policy for erc721_tokenURI. 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 erc721_tokenURI? +

erc721_tokenURI 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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