Get detailed information about trails in national parks including difficulty, length, elevation gain, and current conditions
AI agents call getTrailInfo to retrieve information from NPS Explorer MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool exclusively retrieves and presents data about trails without creating, modifying, deleting, or executing any side effects. It falls squarely into the Read category as a query/fetch operation. The severity is low because misuse poses no significant operational or safety risks—returning incorrect trail information would be unhelpful but not destructive.
From the tool's definition Tool retrieves trail information including difficulty, length, elevation gain, and current conditions. No modification, deletion, or execution of external operations occurs—purely informational queries.
Attacks that exploit this kind of access
Get detailed information about trails in national parks including difficulty, length, elevation gain, and current conditions. It is categorised as a Read tool in the NPS Explorer MCP Server MCP Server, which means it retrieves data without modifying state.
Register the NPS Explorer MCP Server MCP server in PolicyLayer and add a rule for getTrailInfo: 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 NPS Explorer MCP Server. Nothing to install.
getTrailInfo 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 getTrailInfo 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 getTrailInfo. 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.
getTrailInfo is provided by the NPS Explorer MCP Server MCP server (kyle-ski/nps-explorer-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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