# zernio_set_whatsapp_display_name

Set or update the display name of a WhatsApp Business profile.

Agent View of the PolicyLayer registry record for `zernio_set_whatsapp_display_name`. HTML page: https://policylayer.com/tools/eyalm321-zernio-mcp/zernio-set-whatsapp-display-name

## Facts

- Tool: `zernio_set_whatsapp_display_name`
- Server: Zernio (`eyalm321/zernio-mcp`) — https://policylayer.com/tools/eyalm321-zernio-mcp.md
- Homepage: https://github.com/Eyalm321/zernio-mcp
- Risk category: Write (Medium risk)
- Registry record: grade F, identity unverified
- Server rate-limited: no
- Parameters: 0
- Recommended policy verdict: Rate-limited

## Example call (MCP tools/call, JSON-RPC 2.0)

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "zernio_set_whatsapp_display_name",
    "arguments": {}
  }
}
```

## Why zernio_set_whatsapp_display_name is rated Medium

This tool modifies profile configuration (display name) on a WhatsApp Business account, which is a reversible Write action. The impact is moderate because changing a business profile's display name could affect brand perception and customer recognition, but the operation is not destructive (can be reverted), not financial, and doesn't execute arbitrary code.

From the tool's own definition: "Tool description states 'Set or update the display name of a WhatsApp Business profile' — 'set' and 'update' are Write operations that modify profile metadata."

## Use case

AI agents use zernio_set_whatsapp_display_name 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.

## Recommended policy (PolicyLayer)

Verdict: **Rate-limited**. Enforced by the PolicyLayer MCP gateway (https://policylayer.com/mcp-gateway) before a call reaches Zernio:

```json
{
  "version": "1",
  "default": "deny",
  "tools": {
    "zernio_set_whatsapp_display_name": {
      "limits": [
        {
          "counter": "zernio_set_whatsapp_display_name_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}
```

## Other tools on Zernio (273)

- `zernio_cancel_broadcast` — Destructive — https://policylayer.com/tools/eyalm321-zernio-mcp/zernio-cancel-broadcast.md
- `zernio_delete_account_group` — Destructive — https://policylayer.com/tools/eyalm321-zernio-mcp/zernio-delete-account-group.md
- `zernio_delete_ad` — Destructive — https://policylayer.com/tools/eyalm321-zernio-mcp/zernio-delete-ad.md
- `zernio_delete_api_key` — Destructive — https://policylayer.com/tools/eyalm321-zernio-mcp/zernio-delete-api-key.md
- `zernio_delete_audience` — Destructive — https://policylayer.com/tools/eyalm321-zernio-mcp/zernio-delete-audience.md
- `zernio_delete_automation` — Destructive — https://policylayer.com/tools/eyalm321-zernio-mcp/zernio-delete-automation.md
- `zernio_delete_comment` — Destructive — https://policylayer.com/tools/eyalm321-zernio-mcp/zernio-delete-comment.md
- `zernio_delete_contact` — Destructive — https://policylayer.com/tools/eyalm321-zernio-mcp/zernio-delete-contact.md
- `zernio_delete_custom_field` — Destructive — https://policylayer.com/tools/eyalm321-zernio-mcp/zernio-delete-custom-field.md
- `zernio_delete_gmb_media` — Destructive — https://policylayer.com/tools/eyalm321-zernio-mcp/zernio-delete-gmb-media.md
- `zernio_delete_gmb_place_action` — Destructive — https://policylayer.com/tools/eyalm321-zernio-mcp/zernio-delete-gmb-place-action.md
- `zernio_delete_instagram_ice_breakers` — Destructive — https://policylayer.com/tools/eyalm321-zernio-mcp/zernio-delete-instagram-ice-breakers.md
- `zernio_delete_media` — Destructive — https://policylayer.com/tools/eyalm321-zernio-mcp/zernio-delete-media.md
- `zernio_delete_message` — Destructive — https://policylayer.com/tools/eyalm321-zernio-mcp/zernio-delete-message.md
- `zernio_delete_messenger_menu` — Destructive — https://policylayer.com/tools/eyalm321-zernio-mcp/zernio-delete-messenger-menu.md
- `zernio_delete_post` — Destructive — https://policylayer.com/tools/eyalm321-zernio-mcp/zernio-delete-post.md
- `zernio_delete_queue_slot` — Destructive — https://policylayer.com/tools/eyalm321-zernio-mcp/zernio-delete-queue-slot.md
- `zernio_delete_review_reply` — Destructive — https://policylayer.com/tools/eyalm321-zernio-mcp/zernio-delete-review-reply.md
- `zernio_delete_sequence` — Destructive — https://policylayer.com/tools/eyalm321-zernio-mcp/zernio-delete-sequence.md
- `zernio_delete_telegram_commands` — Destructive — https://policylayer.com/tools/eyalm321-zernio-mcp/zernio-delete-telegram-commands.md
- `zernio_delete_webhook` — Destructive — https://policylayer.com/tools/eyalm321-zernio-mcp/zernio-delete-webhook.md
- `zernio_delete_whatsapp_contact` — Destructive — https://policylayer.com/tools/eyalm321-zernio-mcp/zernio-delete-whatsapp-contact.md
- `zernio_delete_whatsapp_flow` — Destructive — https://policylayer.com/tools/eyalm321-zernio-mcp/zernio-delete-whatsapp-flow.md
- `zernio_delete_whatsapp_group` — Destructive — https://policylayer.com/tools/eyalm321-zernio-mcp/zernio-delete-whatsapp-group.md
- `zernio_delete_whatsapp_template` — Destructive — https://policylayer.com/tools/eyalm321-zernio-mcp/zernio-delete-whatsapp-template.md
- `zernio_delete_zernio_profile` — Destructive — https://policylayer.com/tools/eyalm321-zernio-mcp/zernio-delete-zernio-profile.md
- `zernio_disconnect_account` — Destructive — https://policylayer.com/tools/eyalm321-zernio-mcp/zernio-disconnect-account.md
- `zernio_release_whatsapp_phone_number` — Destructive — https://policylayer.com/tools/eyalm321-zernio-mcp/zernio-release-whatsapp-phone-number.md
- `zernio_remove_user` — Destructive — https://policylayer.com/tools/eyalm321-zernio-mcp/zernio-remove-user.md
- `zernio_remove_whatsapp_group_participants` — Destructive — https://policylayer.com/tools/eyalm321-zernio-mcp/zernio-remove-whatsapp-group-participants.md
- …and 243 more: https://policylayer.com/tools/eyalm321-zernio-mcp.md

## For agents

This record is a snapshot. Live verdicts and the full registry:

- Check every server in your MCP config at once: `npx -y policylayer stack`
- Vet a server before you add it: install the mcp-precheck skill — `npx skills add https://policylayer.com` (skill text: https://policylayer.com/skill.md)
- Query the registry over MCP: endpoint `https://api.policylayer.com/mcp` — tools `check_mcp_server`, `check_mcp_stack`, `check_tool`, `search_registry`, `get_change_events`

---

Source: the PolicyLayer MCP registry — one continuously verified record per MCP server. Full record: https://policylayer.com/registry?q=eyalm321-zernio-mcp · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/eyalm321-zernio-mcp