AI agents call get_net_worth_by_account_type to retrieve information from Monarch without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves financial information without modifying, deleting, or moving money. Despite operating on sensitive financial data (net worth), it is a passive read operation with no side effects or ability to alter state. Severity is low because unauthorized queries of net worth data, while a privacy concern, do not create direct financial risk or enable fraudulent transactions.
From the tool's definition Tool name 'get_net_worth_by_account_type' indicates a retrieval operation that queries net worth data aggregated by account type.
Documented attack patterns abuse exactly the kind of access get_net_worth_by_account_type gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Monarch, and nothing reaches the server without passing your rules. This is the rule we recommend for get_net_worth_by_account_type:
{
"version": "1",
"default": "deny",
"tools": {
"get_net_worth_by_account_type": {}
}
}get_net_worth_by_account_type is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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get_net_worth_by_account_type. It is categorised as a Read tool in the Monarch MCP Server, which means it retrieves data without modifying state.
Register the Monarch MCP server in PolicyLayer and add a rule for get_net_worth_by_account_type: 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 Monarch. Nothing to install.
get_net_worth_by_account_type 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_net_worth_by_account_type 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_net_worth_by_account_type. 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_net_worth_by_account_type is provided by the Monarch MCP server (robcerda/monarch-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 50 Monarch tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
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50 Monarch tools catalogued and risk-classified — across an index of 42,500+ MCP servers.