optimize_decklist
AI agents call optimize_decklist to retrieve information from Cz Mtg Compare without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
Despite the empty description lowering confidence slightly, the tool name and server purpose strongly suggest this retrieves or analyzes Magic deck data without modifying it or executing external operations. The most severe sibling tools are cart/watchlist management (Write category), but 'optimize_decklist' appears to be a read-only analysis tool.
From the tool's definition Tool name 'optimize_decklist' and server context suggests analyzing/querying Magic: The Gathering deck data. The server is designed for 'comparing prices' and 'queries' across shops.
Attacks that exploit this kind of access
optimize_decklist. It is categorised as a Read tool in the Cz Mtg Compare MCP Server, which means it retrieves data without modifying state.
Register the Cz Mtg Compare MCP server in PolicyLayer and add a rule for optimize_decklist: 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 Cz Mtg Compare. Nothing to install.
optimize_decklist 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 optimize_decklist 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 optimize_decklist. 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.
optimize_decklist is provided by the Cz Mtg Compare MCP server (xvyslo05/czech-mtg-price-comparator-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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