Remove the flag at a cell on the Minesweeper board
AI agents use unflag to create or update resources in Minesweeper MCP Server — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Minesweeper MCP Server environment.
This tool modifies the state of the Minesweeper game board by removing a flag from a cell. It is a reversible write operation (the flag can be re-placed), with minimal blast radius as it only affects a game state, not any real-world data or system.
From the tool's definition Remove the flag at a cell on the Minesweeper board
Documented attack patterns abuse exactly the kind of access unflag gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Minesweeper MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for unflag:
{
"version": "1",
"default": "deny",
"tools": {
"unflag": {
"limits": [
{
"counter": "unflag_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}unflag stays usable, but capped — an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.
Free to start. No card required.
Remove the flag at a cell on the Minesweeper board. It is categorised as a Write tool in the Minesweeper MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Minesweeper MCP Server MCP server in PolicyLayer and add a rule for unflag: 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 Minesweeper MCP Server. Nothing to install.
unflag is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.
Yes. Add a rate_limit block to the unflag 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 unflag. 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.
unflag is provided by the Minesweeper MCP Server MCP server (tonypan2/minesweeper-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 4 Minesweeper MCP Server tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
Free to start. No card required.
4 Minesweeper MCP Server tools catalogued and risk-classified — across an index of 42,500+ MCP servers.