获取指定书籍的所有书签
AI agents call get_bookmarks to retrieve information from Readbook MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves and queries bookmark data for a specific book. It performs a read-only operation that does not modify, delete, or execute any external actions. The operation is informational only, presenting zero risk of unintended side effects.
From the tool's definition Tool name 'get_bookmarks' and description '获取指定书籍的所有书签' (get all bookmarks for a specified book) indicate data retrieval with no side effects.
Attacks that exploit this kind of access
获取指定书籍的所有书签. It is categorised as a Read tool in the Readbook MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Readbook MCP Server MCP server in PolicyLayer and add a rule for get_bookmarks: 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 Readbook MCP Server. Nothing to install.
get_bookmarks 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 get_bookmarks 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 get_bookmarks. 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.
get_bookmarks is provided by the Readbook MCP Server MCP server (mkafw/readbook-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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