nuclei_write_template

Write custom nuclei YAML template to workspace.

SERVERHercules MCP SOURCE0xmihirk/hercules-mcp

Medium RISK CLASS

Category Write

Parameters 00 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/0xmihirk-hercules-mcp/nuclei-write-template.md

WHAT IT DOES

What nuclei_write_template does on Hercules MCP

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

RISK

Why nuclei_write_template is rated Medium

This tool writes a custom Nuclei YAML template to the workspace. While the immediate action is a Write (creating/modifying a file), the context is highly sensitive: Nuclei templates define vulnerability scanning and exploitation logic in a penetration testing environment (Kali Linux). A malicious or misconfigured template could be used to launch attacks, exfiltrate data, or trigger destructive actions when executed.

From the tool's definition 'Write custom nuclei YAML template to workspace'

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs nuclei_write_template safely

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

nuclei_write_template Rate-limited

nuclei_write_template 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": {
    "nuclei_write_template": {
      "limits": [
        {
          "counter": "nuclei_write_template_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 Hercules MCP, apply this rule, and every nuclei_write_template call is checked against it from then on.

FAQ

Questions about nuclei_write_template

What does the nuclei_write_template tool do? +

Write custom nuclei YAML template to workspace. It is categorised as a Write tool in the Hercules MCP MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on nuclei_write_template? +

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

What risk level is nuclei_write_template? +

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

Can I rate-limit nuclei_write_template? +

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

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

nuclei_write_template is provided by the Hercules MCP server (0xmihirk/hercules-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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Guides

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