# app_create

Install a new app from the catalog. Provide the app_name (desired installation name), catalog_app (app from catalog), and optionally train, version, and configuration values.

Agent View of the PolicyLayer registry record for `app_create`. HTML page: https://policylayer.com/tools/nasbridge/app-create

## Facts

- Tool: `app_create`
- Server: Nasbridge (`maverick0628/nasbridge`) — https://policylayer.com/tools/nasbridge.md
- Homepage: https://github.com/maverick0628/nasbridge
- 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": "app_create",
    "arguments": {}
  }
}
```

## Why app_create is rated Medium

This tool creates and installs new applications on the TrueNAS system, which is a reversible modification of system state (apps can be uninstalled). While it doesn't irreversibly delete data (Destructive) or execute arbitrary code (Execute), it does create new software components that could potentially execute code or access resources depending on what app is installed.

From the tool's own definition: "Tool name 'app_create' and description 'Install a new app from the catalog' indicates creation of new application instances."

## Use case

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

## Recommended policy (PolicyLayer)

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

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

## Other tools on Nasbridge (278)

- `acme_dns_authenticator_delete` — Destructive — https://policylayer.com/tools/nasbridge/acme-dns-authenticator-delete.md
- `alertservice_delete` — Destructive — https://policylayer.com/tools/nasbridge/alertservice-delete.md
- `api_key_delete` — Destructive — https://policylayer.com/tools/nasbridge/api-key-delete.md
- `app_delete` — Destructive — https://policylayer.com/tools/nasbridge/app-delete.md
- `app_rollback` — Destructive — https://policylayer.com/tools/nasbridge/app-rollback.md
- `boot_attach_disk` — Destructive — https://policylayer.com/tools/nasbridge/boot-attach-disk.md
- `boot_detach_disk` — Destructive — https://policylayer.com/tools/nasbridge/boot-detach-disk.md
- `bootenv_delete` — Destructive — https://policylayer.com/tools/nasbridge/bootenv-delete.md
- `certificate_delete` — Destructive — https://policylayer.com/tools/nasbridge/certificate-delete.md
- `cloud_backup_abort` — Destructive — https://policylayer.com/tools/nasbridge/cloud-backup-abort.md
- `cloud_backup_delete` — Destructive — https://policylayer.com/tools/nasbridge/cloud-backup-delete.md
- `cloudsync_credentials_delete` — Destructive — https://policylayer.com/tools/nasbridge/cloudsync-credentials-delete.md
- `cloudsync_delete` — Destructive — https://policylayer.com/tools/nasbridge/cloudsync-delete.md
- `cronjob_delete` — Destructive — https://policylayer.com/tools/nasbridge/cronjob-delete.md
- `dataset_delete` — Destructive — https://policylayer.com/tools/nasbridge/dataset-delete.md
- `directory_services_leave` — Destructive — https://policylayer.com/tools/nasbridge/directory-services-leave.md
- `disk_wipe` — Destructive — https://policylayer.com/tools/nasbridge/disk-wipe.md
- `group_delete` — Destructive — https://policylayer.com/tools/nasbridge/group-delete.md
- `initshutdown_delete` — Destructive — https://policylayer.com/tools/nasbridge/initshutdown-delete.md
- `iscsi_extent_delete` — Destructive — https://policylayer.com/tools/nasbridge/iscsi-extent-delete.md
- `iscsi_initiator_delete` — Destructive — https://policylayer.com/tools/nasbridge/iscsi-initiator-delete.md
- `iscsi_portal_delete` — Destructive — https://policylayer.com/tools/nasbridge/iscsi-portal-delete.md
- `iscsi_target_delete` — Destructive — https://policylayer.com/tools/nasbridge/iscsi-target-delete.md
- `iscsi_targetextent_delete` — Destructive — https://policylayer.com/tools/nasbridge/iscsi-targetextent-delete.md
- `keychaincredential_delete` — Destructive — https://policylayer.com/tools/nasbridge/keychaincredential-delete.md
- `network_interface_delete` — Destructive — https://policylayer.com/tools/nasbridge/network-interface-delete.md
- `network_rollback_changes` — Destructive — https://policylayer.com/tools/nasbridge/network-rollback-changes.md
- `network_static_route_delete` — Destructive — https://policylayer.com/tools/nasbridge/network-static-route-delete.md
- `nfs_share_delete` — Destructive — https://policylayer.com/tools/nasbridge/nfs-share-delete.md
- `pool_export` — Destructive — https://policylayer.com/tools/nasbridge/pool-export.md
- …and 248 more: https://policylayer.com/tools/nasbridge.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=nasbridge · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/nasbridge