Show dataflow analytics as tabular data: how hosts communicate with VAST components (views, VIPs, cnodes). Returns timestamp and a table of traffic flows with bandwidth and IOPS. For a visual topology diagram, use list_dataflow_diagram_vast instead.
AI agents call list_dataflow_vast to retrieve information from VAST Admin MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves and displays network traffic analytics and dataflow information from VAST clusters. It performs no modifications, deletions, or external operations—it only queries and presents monitoring data in tabular format. This is a straightforward Read operation with minimal risk.
From the tool's definition Tool description states it 'Show dataflow analytics as tabular data' and 'Returns timestamp and a table of traffic flows'. The verb 'Show' and 'Returns' indicate data retrieval without modification.
Documented attack patterns abuse exactly the kind of access list_dataflow_vast gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and VAST Admin MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for list_dataflow_vast:
{
"version": "1",
"default": "deny",
"tools": {
"list_dataflow_vast": {}
}
}list_dataflow_vast is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
Free to start. No card required.
Show dataflow analytics as tabular data: how hosts communicate with VAST components (views, VIPs, cnodes). Returns timestamp and a table of traffic flows with bandwidth and IOPS. For a visual topology diagram, use list_dataflow_diagram_vast instead. It is categorised as a Read tool in the VAST Admin MCP Server MCP Server, which means it retrieves data without modifying state.
Register the VAST Admin MCP Server MCP server in PolicyLayer and add a rule for list_dataflow_vast: 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 VAST Admin MCP Server. Nothing to install.
list_dataflow_vast 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 list_dataflow_vast 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 list_dataflow_vast. 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.
list_dataflow_vast is provided by the VAST Admin MCP Server MCP server (vast-data/vast-admin-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from VAST Admin MCP Server, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
Free to start. No card required.
16 VAST Admin MCP Server tools catalogued and risk-classified — across an index of 43,000+ MCP servers.