Find cards using Tagger artwork tags, e.g. squirrel, dragon, wizard.
AI agents call search_by_art_tag to retrieve information from Scryfall MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This is a retrieval-only operation that queries the Scryfall API to find Magic: The Gathering cards matching specified artwork tags. It produces no data modifications, deletions, code execution, or financial transactions. The only potential harm is information disclosure, which is minimal in a public card game database context.
From the tool's definition Tool name 'search_by_art_tag' and description 'Find cards using Tagger artwork tags' indicate a search/query operation with no side effects. Returns card data based on artwork tag filters (e.g., squirrel, dragon, wizard).
Attacks that exploit this kind of access
Find cards using Tagger artwork tags, e.g. squirrel, dragon, wizard. It is categorised as a Read tool in the Scryfall MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Scryfall MCP Server MCP server in PolicyLayer and add a rule for search_by_art_tag: 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 Scryfall MCP Server. Nothing to install.
search_by_art_tag 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_by_art_tag 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_by_art_tag. 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_by_art_tag is provided by the Scryfall MCP Server MCP server (latte-chan/scryfall-connector). 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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