AI agents call search_topics to retrieve information from Weibo MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool appears to search for topics on Weibo, which is a query/retrieval operation with no modification, deletion, or code execution. No side effects are expected. Confidence is moderate (0.75) rather than high because the tool description is empty, leaving some ambiguity, though the pattern of sibling tools and server description strongly suggest read-only functionality.
From the tool's definition Tool name 'search_topics' and sibling tools like 'search_content', 'search_users', 'get_feeds', 'get_profile' all indicate read-only retrieval operations.
Documented attack patterns abuse exactly the kind of access search_topics gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Weibo MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for search_topics:
{
"version": "1",
"default": "deny",
"tools": {
"search_topics": {}
}
}search_topics is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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search_topics. It is categorised as a Read tool in the Weibo MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Weibo MCP Server MCP server in PolicyLayer and add a rule for search_topics: 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 Weibo MCP Server. Nothing to install.
search_topics 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_topics 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_topics. 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_topics is provided by the Weibo MCP Server MCP server (qinyuanpei/mcp-server-weibo). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 10 Weibo MCP Server tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
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10 Weibo MCP Server tools catalogued and risk-classified — across an index of 42,500+ MCP servers.