Call the Yuque hello endpoint.
AI agents call yuque_hello to retrieve information from Yuque Mcp Plus without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
A 'hello' endpoint typically serves as a connectivity test or status check that queries the service and returns a response. This is a read-only operation with no data modification, code execution, or destructive capabilities. The low severity reflects minimal risk even if called unexpectedly.
From the tool's definition Tool name 'yuque_hello' and description 'Call the Yuque hello endpoint' indicate a simple health check or greeting endpoint that retrieves status information without modifying any data or executing operations with side effects.
Attacks that exploit this kind of access
Call the Yuque hello endpoint. It is categorised as a Read tool in the Yuque Mcp Plus MCP Server, which means it retrieves data without modifying state.
Register the Yuque Mcp Plus MCP server in PolicyLayer and add a rule for yuque_hello: 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 Yuque Mcp Plus. Nothing to install.
yuque_hello 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 yuque_hello 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 yuque_hello. 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.
yuque_hello is provided by the Yuque Mcp Plus MCP server (michealjou/yuque-mcp-plus). 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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