Get all air quality monitors in a county. Returns detailed information about monitors including location, operational dates, and measurement parameters. Parameters: - param: 5-digit AQS parameter code for the pollutant. Common codes: - 44201: Ozone (O3) - 88101: PM2.5 (Fine Particulate Matter, Lo...
AI agents call aqs_monitors_by_county to retrieve information from EPA Air Quality System (AQS) 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 public air quality monitoring station metadata from the EPA's Air Quality System. It performs a straightforward data query with no side effects, no data modification, and no irreversible actions. The parameters are used to filter which monitoring stations to return, consistent with a Read operation.
From the tool's definition Tool description states it 'Get all air quality monitors in a county. Returns detailed information about monitors including location, operational dates, and measurement parameters.' The parameters (param codes, date ranges, state codes) are all query filters…
Attacks that exploit this kind of access
Get all air quality monitors in a county. Returns detailed information about monitors including location, operational dates, and measurement parameters. Parameters: - param: 5-digit AQS parameter code for the pollutant. Common codes: - 44201: Ozone (O3) - 88101: PM2.5 (Fine Particulate Matter, Local Conditions) - 81102: PM10 (Particulate Matter) - 42401: Sulfur Dioxide (SO2) - 42101: Carbon Monoxide (CO) - 42602: Nitrogen Dioxide (NO2) - bdate/edate: Begin and end dates in YYYYMMDD format (must be same calendar year) - state: 2-digit FIPS state code (e.g.,. It is categorised as a Read tool in the EPA Air Quality System (AQS) MCP Server MCP Server, which means it retrieves data without modifying state.
Register the EPA Air Quality System (AQS) MCP Server MCP server in PolicyLayer and add a rule for aqs_monitors_by_county: 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 EPA Air Quality System (AQS) MCP Server. Nothing to install.
aqs_monitors_by_county 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 aqs_monitors_by_county 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 aqs_monitors_by_county. 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.
aqs_monitors_by_county is provided by the EPA Air Quality System (AQS) MCP Server MCP server (tyson-swetnam/aqs-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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