AI agents call get_air_quality_by_city to retrieve information from Mcp Meteo without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves air quality information for a specified city. It performs a simple query operation with no capability to modify, delete, or execute external operations. The 'get_' prefix and context of a weather/meteorology service confirm this is a read-only data retrieval operation.
From the tool's definition Tool name 'get_air_quality_by_city' uses the 'get' verb, indicating data retrieval. Description 'Qualité de l'air pour une ville donnée' (air quality for a given city) describes querying atmospheric data without modification or side effects.
Attacks that exploit this kind of access
Qualité de l'air pour une ville donnée. It is categorised as a Read tool in the Mcp Meteo MCP Server, which means it retrieves data without modifying state.
Register the Mcp Meteo MCP server in PolicyLayer and add a rule for get_air_quality_by_city: 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 Meteo. Nothing to install.
get_air_quality_by_city 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_air_quality_by_city 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_air_quality_by_city. 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_air_quality_by_city is provided by the Mcp Meteo MCP server (kerryanopmace/mcp-meteo). 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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