AI agents call misp_bulk_lookup to retrieve information from Zeek without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
The misp_bulk_lookup tool retrieves threat intelligence data from MISP (Malware Information Sharing Platform) by checking indicators of compromise against existing records. This is a read-only query operation that retrieves or correlates data without creating, modifying, or deleting anything. No code execution, destructive actions, or financial implications are involved.
From the tool's definition Tool description states 'Check multiple IOCs against MISP' and 'batch-checking IPs, domains, or hashes' — these are query/lookup operations with no modification or side effects.
Attacks that exploit this kind of access
Check multiple IOCs against MISP in a single call. Useful for batch-checking IPs, domains, or hashes found during Zeek/Suricata analysis. It is categorised as a Read tool in the Zeek MCP Server, which means it retrieves data without modifying state.
Register the Zeek MCP server in PolicyLayer and add a rule for misp_bulk_lookup: 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 Zeek. Nothing to install.
misp_bulk_lookup 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 misp_bulk_lookup 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 misp_bulk_lookup. 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.
misp_bulk_lookup is provided by the Zeek MCP server (solomonneas/zeek-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
Teams ship this data inside their own products. See what a licence covers →