Medium Risk

meta_create_photo_post

Publishes a photo post to a Facebook Page. Args: - page_id (string): Facebook Page ID - url (string): Public URL of the image - caption (string, optional): Photo caption/message - published (boolean): Default true

How to control meta_create_photo_post ↓

What meta_create_photo_post does on Meta MCP Server

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

Medium Risk

Why meta_create_photo_post needs a policy

This tool creates new content (a photo post) on a Facebook Page, which is reversible (posts can be deleted/edited) but modifies the public state of a social media platform. It does not execute arbitrary code, delete data irreversibly, or move money.

From the tool's definition Tool name 'meta_create_photo_post' and description 'Publishes a photo post to a Facebook Page' indicate creation of new content. The 'published' parameter with default true shows immediate public visibility.

Documented attack patterns abuse exactly the kind of access meta_create_photo_post gives an agent:

How to control meta_create_photo_post

PolicyLayer is an MCP gateway — it sits between your AI agents and Meta MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for meta_create_photo_post:

policy.json
{
  "version": "1",
  "default": "deny",
  "tools": {
    "meta_create_photo_post": {
      "limits": [
        {
          "counter": "meta_create_photo_post_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

meta_create_photo_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.

  1. Create a free account and register Meta MCP Server — nothing to install.
  2. Add this policy — paste it, or build it visually.
  3. Point your MCP client (Claude, Cursor, anything) at your gateway URL.
LIMIT THIS TOOL →

Free to start. No card required.

Related tools and policies

Go deeper

Questions about meta_create_photo_post

What does the meta_create_photo_post tool do? +

Publishes a photo post to a Facebook Page. Args: - page_id (string): Facebook Page ID - url (string): Public URL of the image - caption (string, optional): Photo caption/message - published (boolean): Default true. It is categorised as a Write tool in the Meta MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on meta_create_photo_post? +

Register the Meta MCP Server MCP server in PolicyLayer and add a rule for meta_create_photo_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 Meta MCP Server. Nothing to install.

What risk level is meta_create_photo_post? +

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

Can I rate-limit meta_create_photo_post? +

Yes. Add a rate_limit block to the meta_create_photo_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 meta_create_photo_post completely? +

Set action: deny in the PolicyLayer policy for meta_create_photo_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 meta_create_photo_post? +

meta_create_photo_post is provided by the Meta MCP Server MCP server (oliverames/meta-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Meta MCP Server tool call.

Start from Meta MCP Server, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

Free to start. No card required.

200 Meta MCP Server tools catalogued and risk-classified — across an index of 43,000+ MCP servers.

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