List user bookmarks with pagination support
AI agents call bookmarks.list to retrieve information from X MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool performs a read-only query operation that retrieves user bookmark information. It has no side effects, does not modify data, execute code, delete content, or involve financial transactions. The pagination support is a standard retrieval mechanism.
From the tool's definition The tool 'bookmarks.list' with description 'List user bookmarks with pagination support' retrieves bookmark data without modifying, deleting, or executing any operations.
Attacks that exploit this kind of access
List user bookmarks with pagination support. It is categorised as a Read tool in the X MCP Server MCP Server, which means it retrieves data without modifying state.
Register the X MCP Server MCP server in PolicyLayer and add a rule for bookmarks.list: 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 X MCP Server. Nothing to install.
bookmarks.list 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 bookmarks.list 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 bookmarks.list. 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.
bookmarks.list is provided by the X MCP Server MCP server (tomaitagaki/x-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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