AI agents invoke run_plugin to trigger actions in CHAI pentest tool. 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 executes arbitrary plugin code whose effects depend on which plugin is selected and its arguments. While not inherently destructive, plugin execution on a penetration testing server can trigger external operations, system modifications, or security assessments with unpredictable outcomes.
From the tool's definition Tool name 'run_plugin' combined with server context showing 'extensible plugin architecture' and sibling tools including 'execute_command' and 'generate_poc'.
Documented attack patterns abuse exactly the kind of access run_plugin gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and CHAI pentest tool, and nothing reaches the server without passing your rules. This is the rule we recommend for run_plugin:
{
"version": "1",
"default": "deny",
"tools": {
"run_plugin": {
"limits": [
{
"counter": "run_plugin_rate",
"window": "minute",
"max": 10,
"scope": "grant"
}
]
}
}
}run_plugin 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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Run a loaded plugin. It is categorised as a Execute tool in the CHAI pentest tool MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.
Register the CHAI pentest tool MCP server in PolicyLayer and add a rule for run_plugin: 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 CHAI pentest tool. Nothing to install.
run_plugin 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 run_plugin 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 run_plugin. 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.
run_plugin is provided by the CHAI pentest tool MCP server (nihar-sarkar/chai). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from CHAI pentest tool, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
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16 CHAI pentest tool tools catalogued and risk-classified — across an index of 43,000+ MCP servers.