向用户问候的工具
AI agents call greet to retrieve information from AppCan Helper 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 basic greeting operation with no capability to retrieve, modify, execute, or delete data. It is purely informational and user-facing with minimal risk.
From the tool's definition Tool name 'greet' and description '向用户问候的工具' (a tool for greeting users) indicate a simple greeting function with no data access, modification, or side effects.
Attacks that exploit this kind of access
向用户问候的工具. It is categorised as a Read tool in the AppCan Helper MCP Server MCP Server, which means it retrieves data without modifying state.
Register the AppCan Helper MCP Server MCP server in PolicyLayer and add a rule for greet: 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 AppCan Helper MCP Server. Nothing to install.
greet 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 greet 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 greet. 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.
greet is provided by the AppCan Helper MCP Server MCP server (sandy1108/appcan-helper-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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