Get business establishment, employment, and payroll data by county. Returns County Business Patterns data from the Census Bureau showing the number of business establishments, employees, and annual payroll for a given geography and optional industry filter. Args: state: Two-letter state abbreviat...
Part of the Census County Business Patterns server.
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AI agents call get_county_business_patterns to retrieve information from Census County Business Patterns without modifying any data. This is common in research, monitoring, and reporting workflows where the agent needs context before taking action. Because read operations don't change state, they are generally safe to allow without restrictions -- but you may still want rate limits to control API costs.
Even though get_county_business_patterns only reads data, uncontrolled read access can leak sensitive information or rack up API costs. An agent caught in a retry loop could make thousands of calls per minute. A rate limit gives you a safety net without blocking legitimate use.
Read-only tools are safe to allow by default. No rate limit needed unless you want to control costs.
{
"version": "1",
"default": "deny",
"tools": {
"get_county_business_patterns": {}
}
}See the full Census County Business Patterns policy for all 3 tools.
These attack patterns abuse exactly the kind of access get_county_business_patterns gives an agent. Each links to the full case and the policy that stops it:
Other read tools across the catalogue. The same approach applies to each: allow, with a rate cap to control cost.
Get business establishment, employment, and payroll data by county. Returns County Business Patterns data from the Census Bureau showing the number of business establishments, employees, and annual payroll for a given geography and optional industry filter. Args: state: Two-letter state abbreviation (e.g. 'CA', 'TX', 'NY'). county_fips: 3-digit county FIPS code (e.g. '037' for Los Angeles). If omitted, returns data for all counties in the state. naics_code: NAICS 2017 industry code to filter by (e.g. '72' for Accommodation/Food, '62' for Healthcare, '23' for Construction). If omitted, returns totals across all industries. year: Data year (default 2021). Available: 2012-2021.. It is categorised as a Read tool in the Census County Business Patterns MCP Server, which means it retrieves data without modifying state.
Register the Census County Business Patterns MCP server in PolicyLayer and add a rule for get_county_business_patterns: 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 Census County Business Patterns. Nothing to install.
get_county_business_patterns 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_county_business_patterns 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_county_business_patterns. 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_county_business_patterns is provided by the Census County Business Patterns MCP server (https://mcp.olyport.com/census-cbp/mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 3 Census County Business Patterns tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
Free to start. No card required.
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