AI agents call geo.elevation to retrieve information from Mcp without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool queries a public elevation database and returns read-only data based on geographic coordinates. It has no side effects, cannot modify data, execute code, delete information, or commit financial resources. The query-based retrieval of environmental metadata is purely informational.
From the tool's definition Tool description states it 'retrieves...Ground elevation above sea level (meters + feet) for any coordinate on Earth' via 'Open-Meteo (keyless)'. No modification, deletion, execution, or financial transaction is performed.
Attacks that exploit this kind of access
Ground elevation above sea level (meters + feet) for any coordinate on Earth. Pass lat + lon. ~90m DEM. Source: Open-Meteo (keyless). It is categorised as a Read tool in the Mcp MCP Server, which means it retrieves data without modifying state.
Register the MCP server in PolicyLayer and add a rule for geo.elevation: 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. Nothing to install.
geo.elevation 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 geo.elevation 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 geo.elevation. 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.
geo.elevation is provided by the MCP server (@2sio/mcp). 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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