AI agents call get_wstg to retrieve information from Security Framework without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
Based on sibling tool patterns within this security framework MCP server, 'get_wstg' appears to retrieve reference security data without modifying state or executing code. The empty description reduces confidence slightly, but the consistent naming convention with other safe read-only getter functions strongly suggests this retrieves static security testing guidance.
From the tool's definition Tool name 'get_wstg' follows the naming pattern of sibling tools like 'get_api_top10', 'get_asvs', 'get_attack_pattern', and 'get_cheatsheet', all of which are read operations that retrieve security framework data or checklists.
Documented attack patterns abuse exactly the kind of access get_wstg gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Security Framework, and nothing reaches the server without passing your rules. This is the rule we recommend for get_wstg:
{
"version": "1",
"default": "deny",
"tools": {
"get_wstg": {}
}
}get_wstg is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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get_wstg. It is categorised as a Read tool in the Security Framework MCP Server, which means it retrieves data without modifying state.
Register the Security Framework MCP server in PolicyLayer and add a rule for get_wstg: 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 Security Framework. Nothing to install.
get_wstg is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the get_wstg 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 get_wstg. 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.
get_wstg is provided by the Security Framework MCP server (zer0-kr/security-framework-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Security Framework, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
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41 Security Framework tools catalogued and risk-classified — across an index of 43,000+ MCP servers.