upload_creative_asset · Meta Marketing API MCP Server MCP

WHAT IT DOES

What upload_creative_asset does on Meta Marketing API MCP Server

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

WHY IT NEEDS A POLICY

Why upload_creative_asset needs a policy

Uploading creative assets creates or modifies advertising data reversibly—assets can be deleted, replaced, or unpublished. This is a Write operation rather than Read (retrieval only) or Execute (arbitrary code/commands). While it involves the advertising system, it doesn't move money (Financial) or irreversibly delete data (Destructive).

From the tool's definition Tool enables uploading creative assets (images/videos) to Meta, which creates new data in the advertising account.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

upload_creative_asset Rate-limited

upload_creative_asset 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": {
    "upload_creative_asset": {
      "limits": [
        {
          "counter": "upload_creative_asset_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 Meta Marketing API MCP Server, so you can run agents against it safely.

FAQ

Questions about upload_creative_asset

What does the upload_creative_asset tool do? +

Get guidance on uploading creative assets (images/videos) to Meta. Provides step-by-step instructions and technical requirements for asset uploads. It is categorised as a Write tool in the Meta Marketing API 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 upload_creative_asset? +

Register the Meta Marketing API MCP Server MCP server in PolicyLayer and add a rule for upload_creative_asset: 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 Marketing API MCP Server. Nothing to install.

What risk level is upload_creative_asset? +

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

Can I rate-limit upload_creative_asset? +

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

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

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