检查 YanceLint Server 是否运行，返回可用的扫描工具列表。
AI agents call check_health to retrieve information from YanceLint MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
The check_health tool performs a health check and enumerates available linters. These are read-only query operations that retrieve status information without modifying, executing, or deleting anything. The blast radius of misuse is minimal—an AI agent could only learn about server state, not cause harm.
From the tool's definition Tool description states it 'checks if YanceLint Server is running' and 'returns a list of available scanning tools' — purely informational operations with no side effects.
Attacks that exploit this kind of access
检查 YanceLint Server 是否运行，返回可用的扫描工具列表。. It is categorised as a Read tool in the YanceLint MCP Server MCP Server, which means it retrieves data without modifying state.
Register the YanceLint MCP Server MCP server in PolicyLayer and add a rule for check_health: 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 YanceLint MCP Server. Nothing to install.
check_health 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 check_health 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 check_health. 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.
check_health is provided by the YanceLint MCP Server MCP server (xihe-lab/yance-mcp-server). 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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