AI agents call get_fans 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.
get_fans retrieves follower/fan data from Weibo without modifying any information. This is a passive read operation with no side effects, placing it in the Read category. Severity is low because exposure of follower lists causes minimal harm compared to data modification or deletion.
From the tool's definition Tool name 'get_fans' indicates data retrieval; server description states it 'helps retrieve detailed user profiles, timeline content, and perform user searches'; sibling tools include get_comments, get_feeds, get_followers, get_profile—all read operations.
Documented attack patterns abuse exactly the kind of access get_fans 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 get_fans:
{
"version": "1",
"default": "deny",
"tools": {
"get_fans": {}
}
}get_fans is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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get_fans. 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 get_fans: 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.
get_fans 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_fans 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_fans. 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_fans 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.