Analyze all reachable landing positions from a starting coordinate
AI agents call reachable_from to retrieve information from Ice Puzzle without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool performs analysis/query of reachable positions from a coordinate — a read-only spatial query with no side effects on level data.
From the tool's definition Analyze all reachable landing positions from a starting coordinate
Attacks that exploit this kind of access
Analyze all reachable landing positions from a starting coordinate. It is categorised as a Read tool in the Ice Puzzle MCP Server, which means it retrieves data without modifying state.
Register the Ice Puzzle MCP server in PolicyLayer and add a rule for reachable_from: 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 Ice Puzzle. Nothing to install.
reachable_from 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 reachable_from 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 reachable_from. 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.
reachable_from is provided by the Ice Puzzle MCP server (wmoten/ice-puzzle-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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