AI agents call treasury.cash to retrieve information from Mcp without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves and queries publicly available U.S. Treasury financial data (operating cash balances and liquidity metrics). It is a read-only data retrieval operation with no side effects, no modification capability, and no execution of arbitrary operations.
From the tool's definition Daily Treasury Statement (DTS) operating cash balance — Treasury General Account at the Federal Reserve, plus tax-and-loan + Federal Reserve deposit accounts. Liquidity-tracking + macro signals.
Attacks that exploit this kind of access
Daily Treasury Statement (DTS) operating cash balance — Treasury General Account at the Federal Reserve, plus tax-and-loan + Federal Reserve deposit accounts. Liquidity-tracking + macro signals. It is categorised as a Read tool in the Mcp MCP Server, which means it retrieves data without modifying state.
Register the MCP server in PolicyLayer and add a rule for treasury.cash: 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 Mcp. Nothing to install.
treasury.cash 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 treasury.cash 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 treasury.cash. 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.
treasury.cash is provided by the MCP server (@2sio/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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