Simulates multiple sequential suspicious reads for testing behavioral escalation.
AI agents invoke tools_list_trigger to trigger actions in McpVanguard. What it does depends on the arguments the agent supplies, and its effects often reach beyond the immediate call — builds kicked off, notifications sent, workflows started.
This tool simulates suspicious read sequences to trigger behavioral escalation — it actively executes a simulation/test scenario that interacts with the security proxy's detection logic. It is not a passive read; it 'triggers' escalation behavior, making Execute the most appropriate category.
From the tool's definition Simulates multiple sequential suspicious reads for testing behavioral escalation
Documented attack patterns abuse exactly the kind of access tools_list_trigger gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and McpVanguard, and nothing reaches the server without passing your rules. This is the rule we recommend for tools_list_trigger:
{
"version": "1",
"default": "deny",
"tools": {
"tools_list_trigger": {
"limits": [
{
"counter": "tools_list_trigger_rate",
"window": "minute",
"max": 10,
"scope": "grant"
}
]
}
}
}tools_list_trigger stays usable, but rate-capped — a runaway agent can't fire it dozens of times a minute. Everything else on the server is denied unless you say otherwise.
Free to start. No card required.
Simulates multiple sequential suspicious reads for testing behavioral escalation. It is categorised as a Execute tool in the McpVanguard MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.
Register the McpVanguard MCP server in PolicyLayer and add a rule for tools_list_trigger: 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 McpVanguard. Nothing to install.
tools_list_trigger is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.
Yes. Add a rate_limit block to the tools_list_trigger 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 tools_list_trigger. 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.
tools_list_trigger is provided by the McpVanguard MCP server (provnai/mcpvanguard). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from McpVanguard, 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.
4 McpVanguard tools catalogued and risk-classified — across an index of 43,000+ MCP servers.