AI agents call get_combat to retrieve information from DMCP without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves or queries the current state of combat in the game without creating, modifying, deleting, or executing any external operations. It is purely informational and poses minimal security risk, as it cannot alter game state or trigger unintended side effects.
From the tool's definition Tool name 'get_combat' with description 'Get current combat state' indicates a retrieval operation with no side effects. The verb 'Get' and the absence of any modification language confirm this is a read operation.
Documented attack patterns abuse exactly the kind of access get_combat gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and DMCP, and nothing reaches the server without passing your rules. This is the rule we recommend for get_combat:
{
"version": "1",
"default": "deny",
"tools": {
"get_combat": {}
}
}get_combat is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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Get current combat state. It is categorised as a Read tool in the DMCP MCP Server, which means it retrieves data without modifying state.
Register the D MCP server in PolicyLayer and add a rule for get_combat: 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 DMCP. Nothing to install.
get_combat 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 get_combat 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 get_combat. 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.
get_combat is provided by the D MCP server (shawnrushefsky/dmcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from DMCP, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
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204 DMCP tools catalogued and risk-classified — across an index of 43,000+ MCP servers.