learn_run_script · Skill MCP: Risk & Policy

WHAT IT DOES

What learn_run_script does on SkillMCP

AI agents invoke learn_run_script to trigger actions in SkillMCP. What it does depends on the arguments the agent supplies, and its effects often reach beyond the immediate call — builds kicked off, notifications sent, workflows started.

WHY IT NEEDS A POLICY

Why learn_run_script needs a policy

The tool name explicitly contains 'run_script', which maps to the Execute category (runs code or triggers external operations whose effects depend on arguments). Though the description is empty, the naming convention and server purpose (serving skills and behavioral rules to coding assistants) strongly indicate this tool executes arbitrary scripts.

From the tool's definition Tool name 'learn_run_script' indicates script execution capability. The server context confirms it injects behavioral rules and knowledge into AI agents for coding assistance, and sibling tools (read_skill, read_skill_file, list_skills) suggest this tool…

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

learn_run_script Rate-limited

learn_run_script stays usable, but rate-capped — a runaway agent can't fire it dozens of times a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "learn_run_script": {
      "limits": [
        {
          "counter": "learn_run_script_rate",
          "window": "minute",
          "max": 10,
          "scope": "grant"
        }
      ]
    }
  }
}

RATE-LIMIT THIS TOOL →

Instant setup, no code required.

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

FAQ

Questions about learn_run_script

What does the learn_run_script tool do? +

learn_run_script. It is categorised as a Execute tool in the SkillMCP MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on learn_run_script? +

Register the Skill MCP server in PolicyLayer and add a rule for learn_run_script: 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 SkillMCP. Nothing to install.

What risk level is learn_run_script? +

learn_run_script is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.

Can I rate-limit learn_run_script? +

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

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

learn_run_script is provided by the Skill MCP server (nventimiglia/skillsmcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.