search_card
AI agents call search_card 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.
This tool retrieves and compares Magic: The Gathering card price data across multiple online shops. It performs read-only queries and returns results without modifying any data, creating accounts, executing external code, or moving money. The blast radius of misuse is minimal—an agent could retrieve price information unnecessarily or excessively, but this causes no damage or financial impact.
From the tool's definition Tool name 'search_card' combined with server description indicating it 'Queries all shops in parallel and returns a normalized, price-sorted list' indicates data retrieval.
Attacks that exploit this kind of access
search_card. 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 search_card: 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.
search_card 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 search_card 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 search_card. 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.
search_card 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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