Get annual summary data for a specific EPA air quality monitoring site. Annual summaries include yearly statistics such as arithmetic mean, standard deviation, maximum values, percentiles (10th through 99th), observation counts, data completeness metrics, and exceedance counts for primary and sec...
AI agents call aqs_annual_summary_by_site 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 and queries pre-computed annual summary statistics from EPA monitoring sites. It has no side effects, does not create, modify, delete, or execute operations. It is a straightforward data retrieval function that presents no capability for misuse to cause harm. The blast radius if an AI agent misuses this tool is minimal—it can only return air quality data that is already public.
From the tool's definition Tool name 'aqs_annual_summary_by_site' and description 'Get annual summary data' indicates retrieval of existing data with no modifications.
Attacks that exploit this kind of access
Get annual summary data for a specific EPA air quality monitoring site. Annual summaries include yearly statistics such as arithmetic mean, standard deviation, maximum values, percentiles (10th through 99th), observation counts, data completeness metrics, and exceedance counts for primary and secondary NAAQS standards. 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_annual_summary_by_site: 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_annual_summary_by_site 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_annual_summary_by_site 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_annual_summary_by_site. 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_annual_summary_by_site 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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