update_meta_object

SERVERHermoso SOURCEhttps://app.hermoso.ai/mcp

Medium RISK CLASS

Category Write

Parameters 00 required

Recommended Rate-limitedsee the rule below

Registry record Grade D, identity unverified Pull the record →

This record as markdown: /tools/hermoso/update-meta-object.md

WHAT IT DOES

What update_meta_object does on Hermoso

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

RISK

Why update_meta_object is rated Medium

An AI agent can call update_meta_object faster than any human can review: one bad instruction and it creates or modifies resources in Hermoso by the hundred, each call as confident as the last.

Risk signalsBulk/mass operation — affects multiple targets

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs update_meta_object safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Hermoso, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For update_meta_object, this is the rule to start with:

update_meta_object Rate-limited

update_meta_object 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_meta_object": {
      "limits": [
        {
          "counter": "update_meta_object_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Hermoso, apply this rule, and every update_meta_object call is checked against it from then on.

FAQ

Questions about update_meta_object

What does the update_meta_object tool do? +

Update an EXISTING campaign, ad set, or ad — rename, change its daily budget, retarget (ad sets), or change status (PAUSED / ACTIVE / ARCHIVED). Pass objectId (from list_meta_ads) + adAccountId. Setting something ACTIVE can start REAL AD SPEND — show the user what will run + its budget, get a yes, then pass confirm:true. Pausing and renaming are always safe and always reversible. ARCHIVING IS NOT: Meta treats an archived object as DELETED and refuses to bring it back — every later edit answers. It is categorised as a Write tool in the Hermoso 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_meta_object? +

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

What risk level is update_meta_object? +

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

Can I rate-limit update_meta_object? +

Yes. Add a rate_limit block to the update_meta_object 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_meta_object completely? +

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

update_meta_object is provided by the Hermoso MCP server (https://app.hermoso.ai/mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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