Check your current USDC wallet balance.
AI agents call check_balance to retrieve information from Remit Md MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool only retrieves information about account state without creating, modifying, or moving funds. It is a pure read operation analogous to a balance inquiry. While it occurs in a financial system (remit.md), the tool itself performs no financial transactions or state changes. Severity is low because unauthorized balance checks pose minimal direct harm compared to payment or fund movement capabilities.
From the tool's definition Tool name is 'check_balance' and description states it checks 'your current USDC wallet balance' — a query operation with no side effects.
Attacks that exploit this kind of access
Check your current USDC wallet balance. It is categorised as a Read tool in the Remit Md MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Remit Md MCP Server 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 Remit Md MCP Server. 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 Remit Md MCP Server MCP server (pay-skill/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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