Get a list of parameters (pollutants/measurements) within a parameter class.
AI agents call aqs_list_parameters 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 metadata about available parameters (pollutants and measurements) from the EPA Air Quality System. It performs a simple lookup/enumeration without creating, modifying, deleting, or executing any side effects. The data returned is read-only descriptive information, making this a straightforward Read category operation with minimal risk if misused by an AI agent.
From the tool's definition Tool name 'aqs_list_parameters' and description 'Get a list of parameters' indicate a query/retrieval operation with no modification capability. The verb 'list' and 'get' are characteristic of Read operations.
Attacks that exploit this kind of access
Get a list of parameters (pollutants/measurements) within a parameter class. 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_list_parameters: 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_list_parameters 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_list_parameters 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_list_parameters. 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_list_parameters 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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