manage_whitelist · Fastly NGWAF MCP Server MCP

WHAT IT DOES

What manage_whitelist does on Fastly NGWAF MCP Server

AI agents use manage_whitelist to create or update resources in Fastly NGWAF MCP Server — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Fastly NGWAF MCP Server environment.

WHY IT NEEDS A POLICY

Why manage_whitelist needs a policy

Managing an IP whitelist involves adding, modifying, or removing entries from firewall allowlists—operations that create or modify security configurations reversibly. While the description lacks specificity about whether deletions are involved, 'manage' typically encompasses write operations. This is categorized as Write rather than Destructive because whitelist entries can generally be re-added if removed in error.

From the tool's definition Tool name 'manage_whitelist' and description 'Manage IP whitelist (allowlist)' indicate modification of security firewall rules. The verb 'manage' implies create, update, or delete operations on whitelist entries.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

manage_whitelist Rate-limited

manage_whitelist 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": {
    "manage_whitelist": {
      "limits": [
        {
          "counter": "manage_whitelist_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL →

Instant setup, no code required.

PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches Fastly NGWAF MCP Server, so you can run agents against it safely.

FAQ

Questions about manage_whitelist

What does the manage_whitelist tool do? +

Manage IP whitelist (allowlist). It is categorised as a Write tool in the Fastly NGWAF MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on manage_whitelist? +

Register the Fastly NGWAF MCP Server MCP server in PolicyLayer and add a rule for manage_whitelist: 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 Fastly NGWAF MCP Server. Nothing to install.

What risk level is manage_whitelist? +

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

Can I rate-limit manage_whitelist? +

Yes. Add a rate_limit block to the manage_whitelist 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 manage_whitelist completely? +

Set action: deny in the PolicyLayer policy for manage_whitelist. 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 manage_whitelist? +

manage_whitelist is provided by the Fastly NGWAF MCP Server MCP server (purpleax/fastlymcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.