# gcp_compute_list_instance_groups

List instance groups in a zone

Agent View of the PolicyLayer registry record for `gcp_compute_list_instance_groups`. HTML page: https://policylayer.com/tools/ahmedselimmansor-ctrl-gcp-mcp-server/gcp-compute-list-instance-groups

## Facts

- Tool: `gcp_compute_list_instance_groups`
- Server: GCP MCP Server (`ahmedselimmansor-ctrl/gcp_mcp_server`) — https://policylayer.com/tools/ahmedselimmansor-ctrl-gcp-mcp-server.md
- Homepage: https://github.com/ahmedselimmansor-ctrl/GCP_MCP_server
- Risk category: Read (Low risk)
- Registry record: grade F, identity unverified
- Server rate-limited: no
- Parameters: 0
- Recommended policy verdict: Allowed

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

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

## Why gcp_compute_list_instance_groups is rated Low

This tool queries and enumerates existing GCP Compute Engine instance groups in a specified zone. It performs a read-only information retrieval operation. While instance group metadata could inform reconnaissance for an attack, the tool itself cannot modify, delete, or execute infrastructure changes. Severity is low because listing resources is a basic query operation with minimal blast radius if misused.

From the tool's own definition: "Tool name contains 'list' and description states 'List instance groups in a zone' — a retrieval operation with no mutation or side effects."

## Use case

AI agents call gcp_compute_list_instance_groups to retrieve information from GCP MCP Server without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

## Recommended policy (PolicyLayer)

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

```json
{
  "version": "1",
  "default": "deny",
  "tools": {
    "gcp_compute_list_instance_groups": {}
  }
}
```

## Other tools on GCP MCP Server (294)

- `gcp_agent_delete_app` — Destructive — https://policylayer.com/tools/ahmedselimmansor-ctrl-gcp-mcp-server/gcp-agent-delete-app.md
- `gcp_agent_delete_data_store` — Destructive — https://policylayer.com/tools/ahmedselimmansor-ctrl-gcp-mcp-server/gcp-agent-delete-data-store.md
- `gcp_agent_delete_endpoint` — Destructive — https://policylayer.com/tools/ahmedselimmansor-ctrl-gcp-mcp-server/gcp-agent-delete-endpoint.md
- `gcp_agent_delete_model` — Destructive — https://policylayer.com/tools/ahmedselimmansor-ctrl-gcp-mcp-server/gcp-agent-delete-model.md
- `gcp_agent_delete_reasoning_engine` — Destructive — https://policylayer.com/tools/ahmedselimmansor-ctrl-gcp-mcp-server/gcp-agent-delete-reasoning-engine.md
- `gcp_appengine_delete_service` — Destructive — https://policylayer.com/tools/ahmedselimmansor-ctrl-gcp-mcp-server/gcp-appengine-delete-service.md
- `gcp_appengine_delete_version` — Destructive — https://policylayer.com/tools/ahmedselimmansor-ctrl-gcp-mcp-server/gcp-appengine-delete-version.md
- `gcp_ar_delete_package` — Destructive — https://policylayer.com/tools/ahmedselimmansor-ctrl-gcp-mcp-server/gcp-ar-delete-package.md
- `gcp_ar_delete_repository` — Destructive — https://policylayer.com/tools/ahmedselimmansor-ctrl-gcp-mcp-server/gcp-ar-delete-repository.md
- `gcp_ar_delete_version` — Destructive — https://policylayer.com/tools/ahmedselimmansor-ctrl-gcp-mcp-server/gcp-ar-delete-version.md
- `gcp_bq_delete_dataset` — Destructive — https://policylayer.com/tools/ahmedselimmansor-ctrl-gcp-mcp-server/gcp-bq-delete-dataset.md
- `gcp_bq_delete_table` — Destructive — https://policylayer.com/tools/ahmedselimmansor-ctrl-gcp-mcp-server/gcp-bq-delete-table.md
- `gcp_compute_delete_disk` — Destructive — https://policylayer.com/tools/ahmedselimmansor-ctrl-gcp-mcp-server/gcp-compute-delete-disk.md
- `gcp_compute_delete_instance` — Destructive — https://policylayer.com/tools/ahmedselimmansor-ctrl-gcp-mcp-server/gcp-compute-delete-instance.md
- `gcp_compute_delete_snapshot` — Destructive — https://policylayer.com/tools/ahmedselimmansor-ctrl-gcp-mcp-server/gcp-compute-delete-snapshot.md
- `gcp_compute_detach_disk` — Destructive — https://policylayer.com/tools/ahmedselimmansor-ctrl-gcp-mcp-server/gcp-compute-detach-disk.md
- `gcp_dns_delete_managed_zone` — Destructive — https://policylayer.com/tools/ahmedselimmansor-ctrl-gcp-mcp-server/gcp-dns-delete-managed-zone.md
- `gcp_dns_delete_record_set` — Destructive — https://policylayer.com/tools/ahmedselimmansor-ctrl-gcp-mcp-server/gcp-dns-delete-record-set.md
- `gcp_firestore_delete_document` — Destructive — https://policylayer.com/tools/ahmedselimmansor-ctrl-gcp-mcp-server/gcp-firestore-delete-document.md
- `gcp_functions_delete` — Destructive — https://policylayer.com/tools/ahmedselimmansor-ctrl-gcp-mcp-server/gcp-functions-delete.md
- `gcp_gke_delete_cluster` — Destructive — https://policylayer.com/tools/ahmedselimmansor-ctrl-gcp-mcp-server/gcp-gke-delete-cluster.md
- `gcp_gke_delete_node_pool` — Destructive — https://policylayer.com/tools/ahmedselimmansor-ctrl-gcp-mcp-server/gcp-gke-delete-node-pool.md
- `gcp_iam_delete_custom_role` — Destructive — https://policylayer.com/tools/ahmedselimmansor-ctrl-gcp-mcp-server/gcp-iam-delete-custom-role.md
- `gcp_iam_delete_service_account` — Destructive — https://policylayer.com/tools/ahmedselimmansor-ctrl-gcp-mcp-server/gcp-iam-delete-service-account.md
- `gcp_iam_delete_service_account_key` — Destructive — https://policylayer.com/tools/ahmedselimmansor-ctrl-gcp-mcp-server/gcp-iam-delete-service-account-key.md
- `gcp_iam_remove_iam_binding` — Destructive — https://policylayer.com/tools/ahmedselimmansor-ctrl-gcp-mcp-server/gcp-iam-remove-iam-binding.md
- `gcp_lb_delete_backend_service` — Destructive — https://policylayer.com/tools/ahmedselimmansor-ctrl-gcp-mcp-server/gcp-lb-delete-backend-service.md
- `gcp_lb_delete_forwarding_rule` — Destructive — https://policylayer.com/tools/ahmedselimmansor-ctrl-gcp-mcp-server/gcp-lb-delete-forwarding-rule.md
- `gcp_lb_delete_target_pool` — Destructive — https://policylayer.com/tools/ahmedselimmansor-ctrl-gcp-mcp-server/gcp-lb-delete-target-pool.md
- `gcp_logging_delete_log` — Destructive — https://policylayer.com/tools/ahmedselimmansor-ctrl-gcp-mcp-server/gcp-logging-delete-log.md
- …and 264 more: https://policylayer.com/tools/ahmedselimmansor-ctrl-gcp-mcp-server.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`

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