Get the tax return overview: refund/owed amount, AGI, filing status, completed sections.
AI agents call get_tax_summary to retrieve information from FreeTaxUSA MCP Server 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 tax filing information without creating, modifying, or deleting data. It is clearly a Read operation. However, severity is high because the data it accesses (refund amounts, AGI, filing status) is highly sensitive personal financial information that could be misused if an AI agent accesses it inappropriately or shares it with unauthorized parties.
From the tool's definition Tool description indicates 'Get' operation that retrieves tax return overview data (refund/owed amount, AGI, filing status, completed sections) with no modification or destructive action.
Attacks that exploit this kind of access
Get the tax return overview: refund/owed amount, AGI, filing status, completed sections. It is categorised as a Read tool in the FreeTaxUSA MCP Server MCP Server, which means it retrieves data without modifying state.
Register the FreeTaxUSA MCP Server MCP server in PolicyLayer and add a rule for get_tax_summary: 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 FreeTaxUSA MCP Server. Nothing to install.
get_tax_summary 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_tax_summary 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_tax_summary. 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_tax_summary is provided by the FreeTaxUSA MCP Server MCP server (schwarztim/freetaxusa-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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