Queries the native token balance (e.g., ETH or POL) of the current account on the specified chain.
AI agents call getBalance to retrieve information from Token Minter without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool only retrieves balance information (ETH, POL, etc.) for the current account. It performs no mutations, executions, or financial transactions. The use of 'Queries' indicates a passive data retrieval operation. While it exists on a token-minting server, this specific tool does not deploy, transfer, or modify assets—it only reads state.
From the tool's definition Tool description states it 'Queries the native token balance' - a read-only operation that retrieves data without modification or side effects.
Documented attack patterns abuse exactly the kind of access getBalance gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Token Minter, and nothing reaches the server without passing your rules. This is the rule we recommend for getBalance:
{
"version": "1",
"default": "deny",
"tools": {
"getBalance": {}
}
}getBalance is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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Queries the native token balance (e.g., ETH or POL) of the current account on the specified chain. It is categorised as a Read tool in the Token Minter MCP Server, which means it retrieves data without modifying state.
Register the Token Minter MCP server in PolicyLayer and add a rule for getBalance: 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 Token Minter. Nothing to install.
getBalance is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the getBalance 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.
Set action: deny in the PolicyLayer policy for getBalance. 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.
getBalance is provided by the Token Minter MCP server (kukapay/token-minter-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Token Minter, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
Free to start. No card required.
6 Token Minter tools catalogued and risk-classified — across an index of 43,000+ MCP servers.