AI agents call get_yield_comparison to retrieve information from Civ6mcp without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves comparative game data about civilizations' yields for analysis purposes. It performs no modifications, deletions, or external operations—it simply queries and returns information from the game state. Consistent with sibling tools like get_city_status, get_civ_statistics, and get_military_intelligence, which are all read operations for strategic analysis.
From the tool's definition Tool name 'get_yield_comparison' with description 'Get a comparison table of all civilizations' indicates a retrieval operation that queries and returns data. The verb 'get' and lack of any modification language confirm read-only functionality.
Attacks that exploit this kind of access
Get a comparison table of all civilizations\. It is categorised as a Read tool in the Civ6mcp MCP Server, which means it retrieves data without modifying state.
Register the Civ6 MCP server in PolicyLayer and add a rule for get_yield_comparison: 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 Civ6mcp. Nothing to install.
get_yield_comparison 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_yield_comparison 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_yield_comparison. 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_yield_comparison is provided by the Civ6 MCP server (lowrykun/civ6mcp). 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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