# search_ngsiem

Execute a CQL query against Next-Gen SIEM

Agent View of the PolicyLayer registry record for `search_ngsiem`. HTML page: https://policylayer.com/tools/crowdstrike/search-ngsiem

## Facts

- Tool: `search_ngsiem`
- Server: CrowdStrike Falcon (`@falcon-mcp`) — https://policylayer.com/tools/crowdstrike.md
- Install: `npx -y @falcon-mcp`
- Homepage: https://www.npmjs.com/package/@falcon-mcp
- Risk category: Execute (High risk)
- Registry record: grade F, identity verified
- 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": "search_ngsiem",
    "arguments": {}
  }
}
```

## Why search_ngsiem is rated High

Although SIEM queries are often read-only, executing arbitrary CQL queries against a security information and event management system can have broad access to sensitive security telemetry, logs, and threat intelligence data. The term 'execute' and arbitrary query capability elevate this beyond a simple Read, as CQL may support data-modifying or side-effecting operations.

From the tool's own definition: "'Execute a CQL query against Next-Gen SIEM' — the tool explicitly executes a query language (CQL) against a SIEM system"

## Use case

AI agents invoke search_ngsiem to trigger actions in CrowdStrike Falcon. What it does depends on the arguments the agent supplies, and its effects often reach beyond the immediate call: builds kicked off, notifications sent, workflows started.

## Recommended policy (PolicyLayer)

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

```json
{
  "version": "1",
  "default": "deny",
  "tools": {
    "search_ngsiem": {
      "limits": [
        {
          "counter": "search_ngsiem_rate",
          "window": "minute",
          "max": 10,
          "scope": "grant"
        }
      ]
    }
  }
}
```

## Other tools on CrowdStrike Falcon (32)

- `falcon_remove_iocs` — Destructive — https://policylayer.com/tools/crowdstrike/falcon-remove-iocs.md
- `falcon_launch_scheduled_report` — Execute — https://policylayer.com/tools/crowdstrike/falcon-launch-scheduled-report.md
- `falcon_check_connectivity` — Read — https://policylayer.com/tools/crowdstrike/falcon-check-connectivity.md
- `falcon_count_kubernetes_containers` — Read — https://policylayer.com/tools/crowdstrike/falcon-count-kubernetes-containers.md
- `falcon_download_report_execution` — Read — https://policylayer.com/tools/crowdstrike/falcon-download-report-execution.md
- `falcon_get_behavior_details` — Read — https://policylayer.com/tools/crowdstrike/falcon-get-behavior-details.md
- `falcon_get_detection_details` — Read — https://policylayer.com/tools/crowdstrike/falcon-get-detection-details.md
- `falcon_get_host_details` — Read — https://policylayer.com/tools/crowdstrike/falcon-get-host-details.md
- `falcon_get_incident_details` — Read — https://policylayer.com/tools/crowdstrike/falcon-get-incident-details.md
- `falcon_get_mitre_report` — Read — https://policylayer.com/tools/crowdstrike/falcon-get-mitre-report.md
- `falcon_list_enabled_modules` — Read — https://policylayer.com/tools/crowdstrike/falcon-list-enabled-modules.md
- `falcon_list_modules` — Read — https://policylayer.com/tools/crowdstrike/falcon-list-modules.md
- `falcon_search_actors` — Read — https://policylayer.com/tools/crowdstrike/falcon-search-actors.md
- `falcon_search_applications` — Read — https://policylayer.com/tools/crowdstrike/falcon-search-applications.md
- `falcon_search_behaviors` — Read — https://policylayer.com/tools/crowdstrike/falcon-search-behaviors.md
- `falcon_search_detections` — Read — https://policylayer.com/tools/crowdstrike/falcon-search-detections.md
- `falcon_search_hosts` — Read — https://policylayer.com/tools/crowdstrike/falcon-search-hosts.md
- `falcon_search_images_vulnerabilities` — Read — https://policylayer.com/tools/crowdstrike/falcon-search-images-vulnerabilities.md
- `falcon_search_incidents` — Read — https://policylayer.com/tools/crowdstrike/falcon-search-incidents.md
- `falcon_search_indicators` — Read — https://policylayer.com/tools/crowdstrike/falcon-search-indicators.md
- `falcon_search_iocs` — Read — https://policylayer.com/tools/crowdstrike/falcon-search-iocs.md
- `falcon_search_kubernetes_containers` — Read — https://policylayer.com/tools/crowdstrike/falcon-search-kubernetes-containers.md
- `falcon_search_report_executions` — Read — https://policylayer.com/tools/crowdstrike/falcon-search-report-executions.md
- `falcon_search_reports` — Read — https://policylayer.com/tools/crowdstrike/falcon-search-reports.md
- `falcon_search_scheduled_reports` — Read — https://policylayer.com/tools/crowdstrike/falcon-search-scheduled-reports.md
- `falcon_search_sensor_usage` — Read — https://policylayer.com/tools/crowdstrike/falcon-search-sensor-usage.md
- `falcon_search_serverless_vulnerabilities` — Read — https://policylayer.com/tools/crowdstrike/falcon-search-serverless-vulnerabilities.md
- `falcon_search_unmanaged_assets` — Read — https://policylayer.com/tools/crowdstrike/falcon-search-unmanaged-assets.md
- `falcon_search_vulnerabilities` — Read — https://policylayer.com/tools/crowdstrike/falcon-search-vulnerabilities.md
- `falcon_show_crowd_score` — Read — https://policylayer.com/tools/crowdstrike/falcon-show-crowd-score.md
- …and 2 more: https://policylayer.com/tools/crowdstrike.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=crowdstrike · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/crowdstrike