AI agents use proxy_add_rule to create or update resources in Kali Security MCP — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Kali Security MCP environment.
The name 'proxy_add_rule' suggests the tool creates or adds a new rule to a proxy configuration. In the context of a penetration testing/security server, this likely modifies proxy intercept or routing rules, which is a Write-level operation. However, since the description is empty, confidence is low.
From the tool's definition Tool name: proxy_add_rule; description is empty and uninformative.
Documented attack patterns abuse exactly the kind of access proxy_add_rule gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Kali Security MCP, and nothing reaches the server without passing your rules. This is the rule we recommend for proxy_add_rule:
{
"version": "1",
"default": "deny",
"tools": {
"proxy_add_rule": {
"limits": [
{
"counter": "proxy_add_rule_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}proxy_add_rule stays usable, but capped — an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.
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proxy_add_rule. It is categorised as a Write tool in the Kali Security MCP MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Kali Security MCP server in PolicyLayer and add a rule for proxy_add_rule: 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 Kali Security MCP. Nothing to install.
proxy_add_rule is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.
Yes. Add a rate_limit block to the proxy_add_rule 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 proxy_add_rule. 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.
proxy_add_rule is provided by the Kali Security MCP server (seac-25/kali-security-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 249 Kali Security MCP tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
Free to start. No card required.
249 Kali Security MCP tools catalogued and risk-classified — across an index of 42,500+ MCP servers.