# neuron_add_group_members

Add members to an existing group, resolved from any combination of sources (other groups, contact lists, contacts, pasted phones, all contacts). Address the group by its id, slug, or JID.

Agent View of the PolicyLayer registry record for `neuron_add_group_members`. HTML page: https://policylayer.com/tools/io-github-conquext-neuron/neuron-add-group-members

## Facts

- Tool: `neuron_add_group_members`
- Server: Neuron (`neuron-mcp-server`) — https://policylayer.com/tools/io-github-conquext-neuron.md
- Install: `npx -y neuron-mcp-server`
- Homepage: https://github.com/conquext/neuron
- Risk category: Write (Medium risk)
- Registry record: grade F, identity unverified
- Server auth posture: open
- Server CORS policy: *
- Server rate-limited: no
- Parameters: 8 (1 required)
- Recommended policy verdict: Rate-limited

## Parameters

| Parameter | Type | Required | Description |
| --- | --- | --- | --- |
| `tags` | array | no | Keep only contacts carrying one of these tags |
| `group` | string | yes | Group id, slug, or JID (ending in @g.us) |
| `phones` | array | no | Raw phone numbers, e.g. pasted from a CSV |
| `listIds` | array | no | Contact list ids or slugs — pulls every member |
| `contactIds` | array | no | Existing contact ids |
| `allContacts` | boolean | no | Union the org's entire address book |
| `fromGroupIds` | array | no | Copy/combine members live from these WhatsApp group JIDs |
| `excludeListIds` | array | no | Subtract every member of these lists |

Parameters from the server's own tool schema.

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

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "neuron_add_group_members",
    "arguments": {
      "group": "<group>"
    }
  }
}
```

## Why neuron_add_group_members is rated Medium

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

## Use case

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

## Recommended policy (PolicyLayer)

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

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

## Other tools on Neuron (400)

- `neuron_cancel_approval` — Destructive — https://policylayer.com/tools/io-github-conquext-neuron/neuron-cancel-approval.md
- `neuron_cancel_booking` — Destructive — https://policylayer.com/tools/io-github-conquext-neuron/neuron-cancel-booking.md
- `neuron_cancel_flow_run` — Destructive — https://policylayer.com/tools/io-github-conquext-neuron/neuron-cancel-flow-run.md
- `neuron_cancel_scheduled_message` — Destructive — https://policylayer.com/tools/io-github-conquext-neuron/neuron-cancel-scheduled-message.md
- `neuron_clear_chat` — Destructive — https://policylayer.com/tools/io-github-conquext-neuron/neuron-clear-chat.md
- `neuron_clear_media` — Destructive — https://policylayer.com/tools/io-github-conquext-neuron/neuron-clear-media.md
- `neuron_delete_ad_request` — Destructive — https://policylayer.com/tools/io-github-conquext-neuron/neuron-delete-ad-request.md
- `neuron_delete_blog_post` — Destructive — https://policylayer.com/tools/io-github-conquext-neuron/neuron-delete-blog-post.md
- `neuron_delete_bot` — Destructive — https://policylayer.com/tools/io-github-conquext-neuron/neuron-delete-bot.md
- `neuron_delete_broadcast` — Destructive — https://policylayer.com/tools/io-github-conquext-neuron/neuron-delete-broadcast.md
- `neuron_delete_calendar` — Destructive — https://policylayer.com/tools/io-github-conquext-neuron/neuron-delete-calendar.md
- `neuron_delete_campaign` — Destructive — https://policylayer.com/tools/io-github-conquext-neuron/neuron-delete-campaign.md
- `neuron_delete_channel` — Destructive — https://policylayer.com/tools/io-github-conquext-neuron/neuron-delete-channel.md
- `neuron_delete_contact` — Destructive — https://policylayer.com/tools/io-github-conquext-neuron/neuron-delete-contact.md
- `neuron_delete_contact_list` — Destructive — https://policylayer.com/tools/io-github-conquext-neuron/neuron-delete-contact-list.md
- `neuron_delete_event` — Destructive — https://policylayer.com/tools/io-github-conquext-neuron/neuron-delete-event.md
- `neuron_delete_event_type` — Destructive — https://policylayer.com/tools/io-github-conquext-neuron/neuron-delete-event-type.md
- `neuron_delete_flow` — Destructive — https://policylayer.com/tools/io-github-conquext-neuron/neuron-delete-flow.md
- `neuron_delete_flow_run` — Destructive — https://policylayer.com/tools/io-github-conquext-neuron/neuron-delete-flow-run.md
- `neuron_delete_kb_entry` — Destructive — https://policylayer.com/tools/io-github-conquext-neuron/neuron-delete-kb-entry.md
- `neuron_delete_knowledge_base` — Destructive — https://policylayer.com/tools/io-github-conquext-neuron/neuron-delete-knowledge-base.md
- `neuron_delete_list_campaign` — Destructive — https://policylayer.com/tools/io-github-conquext-neuron/neuron-delete-list-campaign.md
- `neuron_delete_message` — Destructive — https://policylayer.com/tools/io-github-conquext-neuron/neuron-delete-message.md
- `neuron_delete_newsletter` — Destructive — https://policylayer.com/tools/io-github-conquext-neuron/neuron-delete-newsletter.md
- `neuron_delete_outbound_webhook` — Destructive — https://policylayer.com/tools/io-github-conquext-neuron/neuron-delete-outbound-webhook.md
- `neuron_delete_override` — Destructive — https://policylayer.com/tools/io-github-conquext-neuron/neuron-delete-override.md
- `neuron_delete_persona` — Destructive — https://policylayer.com/tools/io-github-conquext-neuron/neuron-delete-persona.md
- `neuron_delete_product` — Destructive — https://policylayer.com/tools/io-github-conquext-neuron/neuron-delete-product.md
- `neuron_delete_sms_campaign` — Destructive — https://policylayer.com/tools/io-github-conquext-neuron/neuron-delete-sms-campaign.md
- `neuron_delete_social_channel` — Destructive — https://policylayer.com/tools/io-github-conquext-neuron/neuron-delete-social-channel.md
- …and 370 more: https://policylayer.com/tools/io-github-conquext-neuron.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=io-github-conquext-neuron · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/io-github-conquext-neuron