列出所有可用的主题样式
AI agents call list_available_themes to retrieve information from Little Red Book Card MCP without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool queries and returns information about available themes—a purely informational read operation with no side effects, data modification, code execution, or resource consumption beyond a simple list response. Blast radius is minimal; misuse cannot damage, modify, or delete data.
From the tool's definition Tool name 'list_available_themes' and description '列出所有可用的主题样式' (list all available theme styles) indicate a retrieval operation that enumerates available options without modifying data or triggering external operations.
Attacks that exploit this kind of access
列出所有可用的主题样式. It is categorised as a Read tool in the Little Red Book Card MCP MCP Server, which means it retrieves data without modifying state.
Register the Little Red Book Card MCP server in PolicyLayer and add a rule for list_available_themes: 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 Little Red Book Card MCP. Nothing to install.
list_available_themes 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_available_themes 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_available_themes. 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_available_themes is provided by the Little Red Book Card MCP server (onepiecelwc/little-red-book-card-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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