zernio_add_audience_users

Add users to a custom audience for ad targeting.

SERVERZernio SOURCEeyalm321/zernio-mcp

Medium RISK CLASS

Category Write

Parameters 00 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/eyalm321-zernio-mcp/zernio-add-audience-users.md

WHAT IT DOES

What zernio_add_audience_users does on Zernio

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

RISK

Why zernio_add_audience_users is rated Medium

This tool creates or updates audience membership data, which fits the Write category (creates or modifies data reversibly). The severity is medium because misuse could lead to inappropriate ad targeting, wasted ad spend, or privacy concerns by including unintended users in ad audiences, but the effects are reversible and do not directly move money or delete data.

From the tool's definition The tool "add users to a custom audience" creates or modifies audience segments, which are data structures used for ad targeting. This is a reversible data creation/modification operation.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs zernio_add_audience_users safely

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

zernio_add_audience_users Rate-limited

zernio_add_audience_users 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": {
    "zernio_add_audience_users": {
      "limits": [
        {
          "counter": "zernio_add_audience_users_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 Zernio, apply this rule, and every zernio_add_audience_users call is checked against it from then on.

FAQ

Questions about zernio_add_audience_users

What does the zernio_add_audience_users tool do? +

Add users to a custom audience for ad targeting. It is categorised as a Write tool in the Zernio MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on zernio_add_audience_users? +

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

What risk level is zernio_add_audience_users? +

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

Can I rate-limit zernio_add_audience_users? +

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

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

zernio_add_audience_users is provided by the Zernio MCP server (eyalm321/zernio-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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