AI agents call Search_Flows_Tool to retrieve information from TianGong-LCA-MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
The tool performs a search operation on LCA (Life Cycle Assessment) flows data, which is a read-only retrieval action. There are no side effects, data modifications, code execution, or financial implications. The verb 'search' is consistent with the Read category alongside other sibling tools like 'Search_GLAD_Datasets_Tool' and 'Search_Processes_Tool' that clearly perform data queries without causing changes.
From the tool's definition Tool name 'Search_Flows_Tool' and description 'Search LCA flows data' indicate a query/retrieval operation with no modification or execution of external operations.
Documented attack patterns abuse exactly the kind of access Search_Flows_Tool gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and TianGong-LCA-MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for Search_Flows_Tool:
{
"version": "1",
"default": "deny",
"tools": {
"Search_Flows_Tool": {}
}
} Search_Flows_Tool is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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Search LCA flows data. It is categorised as a Read tool in the TianGong-LCA-MCP Server MCP Server, which means it retrieves data without modifying state.
Register the TianGong-LCA-MCP Server MCP server in PolicyLayer and add a rule for Search_Flows_Tool: 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 TianGong-LCA-MCP Server. Nothing to install.
Search_Flows_Tool 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 Search_Flows_Tool 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 Search_Flows_Tool. 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.
Search_Flows_Tool is provided by the TianGong-LCA-MCP Server MCP server (linancn/tiangong-lca-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from TianGong-LCA-MCP Server, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
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11 TianGong-LCA-MCP Server tools catalogued and risk-classified — across an index of 43,000+ MCP servers.