# wa_clear_chat

Clear all messages in a chat. The chat remains but all messages are removed.

Agent View of the PolicyLayer registry record for `wa_clear_chat`. HTML page: https://policylayer.com/tools/delltrak-wamcp/wa-clear-chat

## Facts

- Tool: `wa_clear_chat`
- Server: WA MCP (`delltrak/wamcp`) — https://policylayer.com/tools/delltrak-wamcp.md
- Homepage: https://github.com/delltrak/wamcp
- Risk category: Destructive (Critical risk)
- Registry record: grade F, identity unverified
- Server rate-limited: no
- Parameters: 0
- Recommended policy verdict: Hidden

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

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

## Why wa_clear_chat is rated Critical

This tool permanently and irreversibly deletes message history from a chat. Although the chat object itself persists, the message data cannot be recovered. This meets the Destructive category definition as it irreversibly deletes data. Severity is high because an agent misusing this could destroy important communication records for a user.

From the tool's own definition: "Tool description states it will 'clear all messages in a chat' and 'all messages are removed', which is irreversible data deletion."

Risk signals: Bulk/mass operation — affects multiple targets

## Use case

AI agents call wa_clear_chat to permanently remove resources in WA MCP, typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.

## Recommended policy (PolicyLayer)

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

```json
{
  "version": "1",
  "default": "deny",
  "hide": [
    "wa_clear_chat"
  ]
}
```

## Other tools on WA MCP (61)

- `wa_delete_chat` — Destructive — https://policylayer.com/tools/delltrak-wamcp/wa-delete-chat.md
- `wa_delete_instance` — Destructive — https://policylayer.com/tools/delltrak-wamcp/wa-delete-instance.md
- `wa_delete_message` — Destructive — https://policylayer.com/tools/delltrak-wamcp/wa-delete-message.md
- `wa_group_remove_participants` — Destructive — https://policylayer.com/tools/delltrak-wamcp/wa-group-remove-participants.md
- `wa_remove_profile_picture` — Destructive — https://policylayer.com/tools/delltrak-wamcp/wa-remove-profile-picture.md
- `wa_connect_instance` — Execute — https://policylayer.com/tools/delltrak-wamcp/wa-connect-instance.md
- `wa_disconnect_instance` — Execute — https://policylayer.com/tools/delltrak-wamcp/wa-disconnect-instance.md
- `wa_group_leave` — Execute — https://policylayer.com/tools/delltrak-wamcp/wa-group-leave.md
- `wa_reject_call` — Execute — https://policylayer.com/tools/delltrak-wamcp/wa-reject-call.md
- `wa_restart_instance` — Execute — https://policylayer.com/tools/delltrak-wamcp/wa-restart-instance.md
- `wa_send_presence` — Execute — https://policylayer.com/tools/delltrak-wamcp/wa-send-presence.md
- `wa_check_number_exists` — Read — https://policylayer.com/tools/delltrak-wamcp/wa-check-number-exists.md
- `wa_get_business_profile` — Read — https://policylayer.com/tools/delltrak-wamcp/wa-get-business-profile.md
- `wa_get_messages` — Read — https://policylayer.com/tools/delltrak-wamcp/wa-get-messages.md
- `wa_get_pairing_code` — Read — https://policylayer.com/tools/delltrak-wamcp/wa-get-pairing-code.md
- `wa_get_qr_code` — Read — https://policylayer.com/tools/delltrak-wamcp/wa-get-qr-code.md
- `wa_group_get_invite_code` — Read — https://policylayer.com/tools/delltrak-wamcp/wa-group-get-invite-code.md
- `wa_search_contact` — Read — https://policylayer.com/tools/delltrak-wamcp/wa-search-contact.md
- `wa_archive_chat` — Write — https://policylayer.com/tools/delltrak-wamcp/wa-archive-chat.md
- `wa_block_contact` — Write — https://policylayer.com/tools/delltrak-wamcp/wa-block-contact.md
- `wa_create_group` — Write — https://policylayer.com/tools/delltrak-wamcp/wa-create-group.md
- `wa_create_instance` — Write — https://policylayer.com/tools/delltrak-wamcp/wa-create-instance.md
- `wa_edit_message` — Write — https://policylayer.com/tools/delltrak-wamcp/wa-edit-message.md
- `wa_forward_message` — Write — https://policylayer.com/tools/delltrak-wamcp/wa-forward-message.md
- `wa_group_add_participants` — Write — https://policylayer.com/tools/delltrak-wamcp/wa-group-add-participants.md
- `wa_group_demote` — Write — https://policylayer.com/tools/delltrak-wamcp/wa-group-demote.md
- `wa_group_handle_request` — Write — https://policylayer.com/tools/delltrak-wamcp/wa-group-handle-request.md
- `wa_group_join` — Write — https://policylayer.com/tools/delltrak-wamcp/wa-group-join.md
- `wa_group_promote` — Write — https://policylayer.com/tools/delltrak-wamcp/wa-group-promote.md
- `wa_group_revoke_invite` — Write — https://policylayer.com/tools/delltrak-wamcp/wa-group-revoke-invite.md
- …and 31 more: https://policylayer.com/tools/delltrak-wamcp.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=delltrak-wamcp · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/delltrak-wamcp