List all available card styles
AI agents call list_styles to retrieve information from Markdown to Card - MCP工具 without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool performs a simple enumeration/query of available styles, which is a read-only operation with no side effects, data modification, or external execution. It has minimal security impact as it only returns configuration/metadata information.
From the tool's definition Tool name 'list_styles' combined with description 'List all available card styles' indicates a retrieval operation that queries and returns available options without modifying any data.
Attacks that exploit this kind of access
List all available card styles. It is categorised as a Read tool in the Markdown to Card - MCP工具 MCP Server, which means it retrieves data without modifying state.
Register the Markdown to Card - MCP工具 MCP server in PolicyLayer and add a rule for list_styles: 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 Markdown to Card - MCP工具. Nothing to install.
list_styles 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 list_styles 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 list_styles. 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.
list_styles is provided by the Markdown to Card - MCP工具 MCP server (jasperjeje/mdtcard). 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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