Start a GeoGuessr game. Shows a random Street View location for the user to guess the country. Use this tool when: - User wants to play GeoGuessr - User says "let's play" or "start a game" - User wants to guess locations IMPORTANT INSTRUCTIONS FOR THE AGENT: - Do NOT reveal the country under any ...
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AI agents invoke geoguessr to trigger processes or run actions in My MCP Server. Execute operations can have side effects beyond the immediate call -- triggering builds, sending notifications, or starting workflows. Rate limits and argument validation are essential to prevent runaway execution.
geoguessr can trigger processes with real-world consequences. An uncontrolled agent might start dozens of builds, send mass notifications, or kick off expensive compute jobs. PolicyLayer enforces rate limits and validates arguments to keep execution within safe bounds.
Execute tools trigger processes. Rate-limit and validate arguments to prevent unintended side effects.
{
"version": "1",
"default": "deny",
"tools": {
"geoguessr": {
"limits": [
{
"counter": "geoguessr_rate",
"window": "minute",
"max": 10,
"scope": "grant"
}
]
}
}
}See the full My MCP Server policy for all 4 tools.
These attack patterns abuse exactly the kind of access geoguessr gives an agent. Each links to the full case and the policy that stops it:
Other execute tools across the catalogue. The same approach applies to each: rate-limit and validate the arguments.
Start a GeoGuessr game. Shows a random Street View location for the user to guess the country. Use this tool when: - User wants to play GeoGuessr - User says "let's play" or "start a game" - User wants to guess locations IMPORTANT INSTRUCTIONS FOR THE AGENT: - Do NOT reveal the country under any circumstances until the user explicitly gives up - When user makes a guess, use the validate_guess tool to check if it's correct - When user asks for a hint, use the get_hint tool (start with level 1, then 2, 3, 4) - Only use reveal_answer when user explicitly says "I give up" or similar - After a correct guess or reveal, ask if they want to play again. It is categorised as a Execute tool in the My MCP Server MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.
Register the My MCP Server MCP server in PolicyLayer and add a rule for geoguessr: 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 My MCP Server. Nothing to install.
geoguessr is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.
Yes. Add a rate_limit block to the geoguessr 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 geoguessr. 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.
geoguessr is provided by the My MCP Server MCP server (https://gueguesser-chatgptap-68537aa2.alpic.live). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 4 My MCP Server tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
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