US Census ACS 5-year demographics for a state or county. Give a state (2-letter or 2-digit FIPS), optionally a 3-digit county FIPS, and get population, median age, median household + per-capita income, poverty rate (computed), households, owner-occupancy rate (computed), median home value, and me...
AI agents call census.demographics 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 performs data retrieval with no side effects. It queries publicly available demographic statistics from the US Census Bureau and returns computed aggregates. There is no capability to modify data, execute code, delete information, or engage in financial transactions. The blast radius of misuse is minimal—an agent could only retrieve census statistics, which are already public.
From the tool's definition Tool retrieves and queries US Census ACS 5-year demographics data (population, median age, income, poverty rate, households, occupancy rates, home values, rent) for a specified state or county. No modification, deletion, or financial transaction occurs.
Attacks that exploit this kind of access
US Census ACS 5-year demographics for a state or county. Give a state (2-letter or 2-digit FIPS), optionally a 3-digit county FIPS, and get population, median age, median household + per-capita income, poverty rate (computed), households, owner-occupancy rate (computed), median home value, and median gross rent. Free, public-domain (US Census). Complements census.zipcode (ZIP-level) with state/county geography. 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 census.demographics: 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.
census.demographics 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 census.demographics 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 census.demographics. 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.
census.demographics 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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