create_cardnews_from_file · Cardnews MCP: Risk & Policy

WHAT IT DOES

What create_cardnews_from_file does on Cardnews

AI agents invoke create_cardnews_from_file to trigger actions in Cardnews. 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 create_cardnews_from_file needs a policy

This tool reads a file from the filesystem and triggers an external pipeline (LLM + Puppeteer browser rendering) to produce HTML and PNG artifacts. It spans Read and Execute; the Puppeteer-based rendering and LLM invocation constitute external process execution, making Execute the appropriate category.

From the tool's definition 자막 파일을 읽어 단일 카드뉴스(HTML + PNG)를 생성한다 — reads a file and generates output using LLM content generation and Puppeteer for rendering

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

create_cardnews_from_file Rate-limited

create_cardnews_from_file 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": {
    "create_cardnews_from_file": {
      "limits": [
        {
          "counter": "create_cardnews_from_file_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 Cardnews, so you can run agents against it safely.

FAQ

Questions about create_cardnews_from_file

What does the create_cardnews_from_file tool do? +

.vtt/.srt/.txt 자막 파일을 읽어 단일 카드뉴스(HTML + PNG)를 생성한다. It is categorised as a Execute tool in the Cardnews MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on create_cardnews_from_file? +

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

What risk level is create_cardnews_from_file? +

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

Can I rate-limit create_cardnews_from_file? +

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

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

create_cardnews_from_file is provided by the Cardnews MCP server (leedonwoo2827-ship-it/cardnews-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.