AI agents invoke dirb_scan to trigger actions in SAST MCP Server. 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.
DIRB is a web content scanner that performs active reconnaissance by sending HTTP requests to a target server. Running it constitutes an external operation with network side effects. The server context (SAST/security scanning tools) and sibling tools (all executing scanners) confirm this is an active scan execution tool. Misuse could constitute unauthorized scanning of external systems, hence high severity.
From the tool's definition Tool name 'dirb_scan' suggests execution of the DIRB web content scanner, a tool that actively probes web servers for hidden directories/files. Description is empty, lowering confidence.
Documented attack patterns abuse exactly the kind of access dirb_scan gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and SAST MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for dirb_scan:
{
"version": "1",
"default": "deny",
"tools": {
"dirb_scan": {
"limits": [
{
"counter": "dirb_scan_rate",
"window": "minute",
"max": 10,
"scope": "grant"
}
]
}
}
}dirb_scan 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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dirb_scan. It is categorised as a Execute tool in the SAST MCP Server MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.
Register the SAST MCP Server MCP server in PolicyLayer and add a rule for dirb_scan: 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 SAST MCP Server. Nothing to install.
dirb_scan 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 dirb_scan 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 dirb_scan. 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.
dirb_scan is provided by the SAST MCP Server MCP server (sengtocxoen/sast-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from SAST 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.
39 SAST MCP Server tools catalogued and risk-classified — across an index of 43,000+ MCP servers.