AI agents invoke ws_send to trigger actions in Kali Security MCP. 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.
In the context of a penetration testing server with tools like adaptive_cmdi_test, adaptive_sqli_test, and adaptive_web_penetration, 'ws_send' likely sends WebSocket messages to a target, which constitutes executing an external operation. WebSocket message injection can be used to exploit vulnerabilities.
From the tool's definition Tool name 'ws_send' suggests sending data over a WebSocket connection, which triggers external operations. The description is empty and uninformative, lowering confidence.
Documented attack patterns abuse exactly the kind of access ws_send 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 ws_send:
{
"version": "1",
"default": "deny",
"tools": {
"ws_send": {
"limits": [
{
"counter": "ws_send_rate",
"window": "minute",
"max": 10,
"scope": "grant"
}
]
}
}
}ws_send 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.
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ws_send. It is categorised as a Execute tool in the Kali Security MCP MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.
Register the Kali Security MCP server in PolicyLayer and add a rule for ws_send: 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.
ws_send 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 ws_send 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 ws_send. 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.
ws_send 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.
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249 Kali Security MCP tools catalogued and risk-classified — across an index of 42,500+ MCP servers.