skill_create · LocalAnt MCP: Risk & Policy

WHAT IT DOES

What skill_create does on LocalAnt

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

WHY IT NEEDS A POLICY

Why skill_create needs a policy

This tool creates new skill definitions but does not execute them (they are saved disabled), does not delete data, and does not modify existing skills. It falls clearly into the Write category as a reversible creation operation. Severity is medium because an AI agent could create numerous skill artifacts that clutter the system, but the disabled-by-default stance and reversibility prevent higher severity.

From the tool's definition Tool name 'skill_create' and description 'Create a skill skeleton (always saved DISABLED)' indicates the tool creates new data artifacts (skill definitions).

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

skill_create Rate-limited

skill_create 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": {
    "skill_create": {
      "limits": [
        {
          "counter": "skill_create_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 LocalAnt, so you can run agents against it safely.

FAQ

Questions about skill_create

What does the skill_create tool do? +

Create a skill skeleton (always saved DISABLED). It is categorised as a Write tool in the LocalAnt MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on skill_create? +

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

What risk level is skill_create? +

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

Can I rate-limit skill_create? +

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

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

skill_create is provided by the LocalAnt MCP server (yuga-hashimoto/localant). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.