getBalanceOf

Gets the ERC20 token balance of an address

SERVERAgentek Eth SOURCEnanidao/agentek

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/nanidao-agentek/getbalanceof.md

WHAT IT DOES

What getBalanceOf does on Agentek Eth

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

RISK

Why getBalanceOf is rated Low

This tool performs a read-only query of token balances on the Ethereum blockchain. It has no side effects, does not modify state, and does not execute code or transfer funds. The impact of misuse is minimal—an attacker could only discover balance information already visible on public blockchains.

From the tool's definition Tool name 'getBalanceOf' and description 'Gets the ERC20 token balance of an address' indicate a query operation that retrieves blockchain state without modification or execution of arbitrary code.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs getBalanceOf safely

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

getBalanceOf Allowed

getBalanceOf 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": {
    "getBalanceOf": {}
  }
}

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

The button opens the PolicyLayer dashboard: create your workspace, connect Agentek Eth, apply this rule, and every getBalanceOf call is checked against it from then on.

FAQ

Questions about getBalanceOf

What does the getBalanceOf tool do? +

Gets the ERC20 token balance of an address. It is categorised as a Read tool in the Agentek Eth MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on getBalanceOf? +

Register the Agentek Eth MCP server in PolicyLayer and add a rule for getBalanceOf: 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 Agentek Eth. Nothing to install.

What risk level is getBalanceOf? +

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

Can I rate-limit getBalanceOf? +

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

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

getBalanceOf is provided by the Agentek Eth MCP server (nanidao/agentek). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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