update-post · Paragraph MCP: Risk & Policy

WHAT IT DOES

What update-post does on Paragraph MCP

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

WHY IT NEEDS A POLICY

Why update-post needs a policy

This tool creates or modifies data reversibly (updating posts). It does not delete data (Destructive), execute arbitrary code (Execute), or move money (Financial). The capability is Write-class.

From the tool's definition Tool name is 'update-post' and description states 'Update an existing post' — clear modification of existing data.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

update-post Rate-limited

update-post 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": {
    "update-post": {
      "limits": [
        {
          "counter": "update-post_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 Paragraph MCP, so you can run agents against it safely.

FAQ

Questions about update-post

What does the update-post tool do? +

Update an existing post by ID or slug. Only provided fields are updated — omit any field you don. It is categorised as a Write tool in the Paragraph 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 update-post? +

Register the Paragraph MCP server in PolicyLayer and add a rule for update-post: 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 Paragraph MCP. Nothing to install.

What risk level is update-post? +

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

Can I rate-limit update-post? +

Yes. Add a rate_limit block to the update-post 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 update-post completely? +

Set action: deny in the PolicyLayer policy for update-post. 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 update-post? +

update-post is provided by the Paragraph MCP server (paragraph-xyz/paragraph-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.