# list_databases

List Firestore databases.

Agent View of the PolicyLayer registry record for `list_databases`. HTML page: https://policylayer.com/tools/com-googleapis-firestore-mcp/list-databases

## Facts

- Tool: `list_databases`
- Server: Mcp (`https://firestore.googleapis.com/mcp`) — https://policylayer.com/tools/com-googleapis-firestore-mcp.md
- Homepage: https://github.com/https://firestore.googleapis.com/mcp
- Risk category: Read (Low risk)
- Registry record: grade F, identity unverified
- Server auth posture: open
- Server rate-limited: no
- Parameters: 2 (1 required)
- Recommended policy verdict: Allowed

## Parameters

| Parameter | Type | Required | Description |
| --- | --- | --- | --- |
| `parent` | string | yes | Required. A parent name of the form `projects/{project_id}` |
| `showDeleted` | boolean | no | If true, also returns deleted resources. |

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": "list_databases",
    "arguments": {
      "parent": "<parent>"
    }
  }
}
```

## Why list_databases is rated Low

This tool queries and lists existing Firestore databases, which is a non-destructive retrieval operation. It has no side effects, cannot modify data, and presents minimal risk if misused by an AI agent—the worst outcome would be information disclosure of database names that likely aren't sensitive. Classified as Read with low severity.

From the tool's own definition: "Tool name 'list_databases' and description 'List Firestore databases' indicate a read-only operation that retrieves information without modifying or deleting data."

## Use case

AI agents call list_databases to retrieve information from Mcp 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 Mcp:

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

## Other tools on Mcp (22)

- `delete_backup` — Destructive — https://policylayer.com/tools/com-googleapis-firestore-mcp/delete-backup.md
- `delete_backup_schedule` — Destructive — https://policylayer.com/tools/com-googleapis-firestore-mcp/delete-backup-schedule.md
- `delete_database` — Destructive — https://policylayer.com/tools/com-googleapis-firestore-mcp/delete-database.md
- `delete_document` — Destructive — https://policylayer.com/tools/com-googleapis-firestore-mcp/delete-document.md
- `delete_index` — Destructive — https://policylayer.com/tools/com-googleapis-firestore-mcp/delete-index.md
- `get_backup` — Read — https://policylayer.com/tools/com-googleapis-firestore-mcp/get-backup.md
- `get_backup_schedule` — Read — https://policylayer.com/tools/com-googleapis-firestore-mcp/get-backup-schedule.md
- `get_database` — Read — https://policylayer.com/tools/com-googleapis-firestore-mcp/get-database.md
- `get_document` — Read — https://policylayer.com/tools/com-googleapis-firestore-mcp/get-document.md
- `get_index` — Read — https://policylayer.com/tools/com-googleapis-firestore-mcp/get-index.md
- `list_backup_schedules` — Read — https://policylayer.com/tools/com-googleapis-firestore-mcp/list-backup-schedules.md
- `list_backups` — Read — https://policylayer.com/tools/com-googleapis-firestore-mcp/list-backups.md
- `list_collections` — Read — https://policylayer.com/tools/com-googleapis-firestore-mcp/list-collections.md
- `list_documents` — Read — https://policylayer.com/tools/com-googleapis-firestore-mcp/list-documents.md
- `list_indexes` — Read — https://policylayer.com/tools/com-googleapis-firestore-mcp/list-indexes.md
- `add_document` — Write — https://policylayer.com/tools/com-googleapis-firestore-mcp/add-document.md
- `create_backup_schedule` — Write — https://policylayer.com/tools/com-googleapis-firestore-mcp/create-backup-schedule.md
- `create_database` — Write — https://policylayer.com/tools/com-googleapis-firestore-mcp/create-database.md
- `create_index` — Write — https://policylayer.com/tools/com-googleapis-firestore-mcp/create-index.md
- `update_backup_schedule` — Write — https://policylayer.com/tools/com-googleapis-firestore-mcp/update-backup-schedule.md
- `update_database` — Write — https://policylayer.com/tools/com-googleapis-firestore-mcp/update-database.md
- `update_document` — Write — https://policylayer.com/tools/com-googleapis-firestore-mcp/update-document.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=com-googleapis-firestore-mcp · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/com-googleapis-firestore-mcp