publish_lightpaper · Lightpaper MCP: Risk & Policy

WHAT IT DOES

What publish_lightpaper does on Lightpaper Mcp

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

WHY IT NEEDS A POLICY

Why publish_lightpaper needs a policy

Publishing content is a Write operation: it creates or modifies data reversibly. While published content gets a permanent URL, it can be deleted via the sibling delete_lightpaper tool, making it reversible. The severity is medium because misuse could spam or populate the platform with unwanted content, but it lacks the irreversibility of Destructive actions or financial impact.

From the tool's definition Tool description states 'Publish a document to lightpaper.org. Returns a permanent URL, quality score' - the 'publish' action creates new published content on the platform. The verb 'publish' indicates content creation/modification.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

publish_lightpaper Rate-limited

publish_lightpaper 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": {
    "publish_lightpaper": {
      "limits": [
        {
          "counter": "publish_lightpaper_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 Lightpaper Mcp, so you can run agents against it safely.

FAQ

Questions about publish_lightpaper

What does the publish_lightpaper tool do? +

Publish a document to lightpaper.org. Returns a permanent URL, quality score (0-100),. It is categorised as a Write tool in the Lightpaper 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 publish_lightpaper? +

Register the Lightpaper MCP server in PolicyLayer and add a rule for publish_lightpaper: 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 Lightpaper Mcp. Nothing to install.

What risk level is publish_lightpaper? +

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

Can I rate-limit publish_lightpaper? +

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

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

publish_lightpaper is provided by the Lightpaper MCP server (pypi:lightpaper-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.