Check token balance for an address
AI agents call check-token-balance to retrieve information from Xrpl mcp without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool queries account token balances on the XRP Ledger. It performs a read-only operation that retrieves data with no side effects. No data is created, modified, deleted, or financial transactions are executed. This is a simple informational lookup, making it a low-severity Read operation.
From the tool's definition Tool name 'check-token-balance' and description 'Check token balance for an address' indicate a query operation that retrieves balance information without modifying state.
Documented attack patterns abuse exactly the kind of access check-token-balance gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Xrpl mcp, and nothing reaches the server without passing your rules. This is the rule we recommend for check-token-balance:
{
"version": "1",
"default": "deny",
"tools": {
"check-token-balance": {}
}
}check-token-balance is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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Check token balance for an address. It is categorised as a Read tool in the Xrpl mcp MCP Server, which means it retrieves data without modifying state.
Register the Xrpl MCP server in PolicyLayer and add a rule for check-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 Xrpl mcp. Nothing to install.
check-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 check-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 check-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.
check-token-balance is provided by the Xrpl MCP server (romthpt/mcp-xrpl). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Xrpl mcp, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
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71 Xrpl mcp tools catalogued and risk-classified — across an index of 43,000+ MCP servers.