threat_intel

Threat intel: IP/hash/domain reputation, feed management, blocklist application

SERVERDefense SOURCEdefense-mcp-server

Medium RISK CLASS

Category Write

Parameters 71 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/defense/threat-intel.md

WHAT IT DOES

What threat_intel does on Defense

AI agents use threat_intel to create or update resources in Defense, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Defense environment.

Parameter	Type	Required	Description
`action`	string	Yes	Threat intelligence action
`apply_to`	string	—	Target to apply blocklist to
`feed_url`	string	—	URL of threat feed to download
`feed_name`	string	—	Name of threat feed to update
`indicator`	string	—	IP address, file hash, or domain to check
`output_format`	string	—	Output format
`blocklist_path`	string	—	Path to blocklist file

Parameters from the server's own tool schema.

RISK

Why threat_intel is rated Medium

An AI agent can call threat_intel faster than any human can review: one bad instruction and it creates or modifies resources in Defense by the hundred, each call as confident as the last.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs threat_intel safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Defense, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For threat_intel, this is the rule to start with:

threat_intel Rate-limited

threat_intel stays usable, but capped: an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "threat_intel": {
      "limits": [
        {
          "counter": "threat_intel_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Defense, apply this rule, and every threat_intel call is checked against it from then on.

FAQ

Questions about threat_intel

What does the threat_intel tool do? +

Threat intel: IP/hash/domain reputation, feed management, blocklist application. It is categorised as a Write tool in the Defense MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

What parameters does threat_intel accept? +

threat_intel accepts 7 parameters: action, apply_to, feed_url, feed_name, indicator, output_format, blocklist_path. Required: action. The full parameter table on this page comes from the server's own tool schema.

How do I enforce a policy on threat_intel? +

Register the Defense MCP server in PolicyLayer and add a rule for threat_intel: 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 Defense. Nothing to install.

What risk level is threat_intel? +

threat_intel is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit threat_intel? +

Yes. Add a rate_limit block to the threat_intel 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.

How do I block threat_intel completely? +

Set action: deny in the PolicyLayer policy for threat_intel. 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.

What MCP server provides threat_intel? +

threat_intel is provided by the Defense MCP server (defense-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

KEEP EXPLORING

More on Defense, and thousands of servers like it.

This server

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Across the catalogue

The MCP Attack Database →

Guides

Govern customer-ops agents →Argument validation →Scoped token →