混合主要/次要景點：main_n=1..3；sub_n=0..2。
AI agents call mix_main_and_sub to retrieve information from Gogo Backend without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves and filters travel destination data from the backend database without modifying, deleting, or executing operations. It aggregates main and sub attractions based on numeric parameters, making it a read-only query operation with minimal blast radius if misused.
From the tool's definition Tool name 'mix_main_and_sub' and description indicate it retrieves/combines curated travel spot data (main and sub attractions). The parameters (main_n=1..3; sub_n=0..2) specify filtering/selection of existing records.
Attacks that exploit this kind of access
混合主要/次要景點：main_n=1..3；sub_n=0..2。. It is categorised as a Read tool in the Gogo Backend MCP Server, which means it retrieves data without modifying state.
Register the Gogo Backend MCP server in PolicyLayer and add a rule for mix_main_and_sub: 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 Gogo Backend. Nothing to install.
mix_main_and_sub 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 mix_main_and_sub 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 mix_main_and_sub. 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.
mix_main_and_sub is provided by the Gogo Backend MCP server (jjjtyy666/gogo-backend-mcp6). 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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