Get token balance for a specific address
AI agents call get_token_balance to retrieve information from Monad MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves token balance information from the blockchain for a given address. It performs a read-only query with no side effects, no data modification, no code execution, and no financial transactions. The worst outcome of misuse would be information disclosure about balances on the blockchain, which are already public. This is a standard Read category tool.
From the tool's definition Tool name is 'get_token_balance' and description states 'Get token balance for a specific address' — a query operation that retrieves data without modification.
Attacks that exploit this kind of access
Get token balance for a specific address. It is categorised as a Read tool in the Monad MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Monad MCP Server MCP server in PolicyLayer and add a rule for get_token_balance: 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 Monad MCP Server. Nothing to install.
get_token_balance 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 get_token_balance 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 get_token_balance. 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.
get_token_balance is provided by the Monad MCP Server MCP server (tairon-ai/monad-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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