AI agents call search_threat_actors to retrieve information from OpenCTI MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool searches and retrieves threat actor information from OpenCTI's threat intelligence database. It performs a query operation with no side effects—it retrieves or queries data only. No data is created, modified, deleted, or irreversibly changed. The classification aligns with other read-only intelligence retrieval tools on this server.
From the tool's definition Tool name 'search_threat_actors' and description indicating search functionality for threat actors in OpenCTI. All sibling tools (get_*, list_*) are read-only query operations retrieving intelligence data without modification.
Documented attack patterns abuse exactly the kind of access search_threat_actors gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and OpenCTI MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for search_threat_actors:
{
"version": "1",
"default": "deny",
"tools": {
"search_threat_actors": {}
}
}search_threat_actors is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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搜尋OpenCTI中的威脅行為者. It is categorised as a Read tool in the OpenCTI MCP Server MCP Server, which means it retrieves data without modifying state.
Register the OpenCTI MCP Server MCP server in PolicyLayer and add a rule for search_threat_actors: 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 OpenCTI MCP Server. Nothing to install.
search_threat_actors 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 search_threat_actors 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 search_threat_actors. 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.
search_threat_actors is provided by the OpenCTI MCP Server MCP server (zxzinn/opencti-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 16 OpenCTI MCP Server tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
Free to start. No card required.
16 OpenCTI MCP Server tools catalogued and risk-classified — across an index of 42,500+ MCP servers.