Check the balance of a wallet for RBTC or ERC20 tokens on Rootstock blockchain. You can either use an existing wallet file or provide wallet data directly.
AI agents call check-balance to retrieve information from RSK MCP Server - Rootstock Blockchain Tools without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves wallet balance information without any side effects. It does not create, modify, delete, or execute transactions. Even in a blockchain context, balance queries are non-destructive, read-only operations. The tool accepts either an existing wallet file or wallet data but only queries its state; it does not alter it.
From the tool's definition Tool name 'check-balance' and description states it 'Check[s] the balance of a wallet for RBTC or ERC20 tokens on Rootstock blockchain.' The verb 'check' and explicit lack of any modification or state-changing operations indicate this is a read-only query…
Attacks that exploit this kind of access
Check the balance of a wallet for RBTC or ERC20 tokens on Rootstock blockchain. You can either use an existing wallet file or provide wallet data directly. It is categorised as a Read tool in the RSK MCP Server - Rootstock Blockchain Tools MCP Server, which means it retrieves data without modifying state.
Register the RSK MCP Server - Rootstock Blockchain Tools MCP server in PolicyLayer and add a rule for check-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 RSK MCP Server - Rootstock Blockchain Tools. Nothing to install.
check-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 check-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 check-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.
check-balance is provided by the RSK MCP Server - Rootstock Blockchain Tools MCP server (rsksmart/rsk-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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