# list_data_collections

List every data collection that exists (name, item count, last activity). Use when unsure where data lives, what boards the user has, or which collection to bind an app to. Renders no UI.

Agent View of the PolicyLayer registry record for `list_data_collections`. HTML page: https://policylayer.com/tools/2nd1st-open-mcp-apps/list-data-collections

## Facts

- Tool: `list_data_collections`
- Server: Open Mcp Apps (`@2nd1st/open-mcp-apps`) — https://policylayer.com/tools/2nd1st-open-mcp-apps.md
- Install: `npx -y @2nd1st/open-mcp-apps`
- Homepage: https://github.com/2nd1st/open-mcp-apps
- 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": "list_data_collections",
    "arguments": {}
  }
}
```

## Why list_data_collections is rated Low

Tool queries and lists existing data collections without modification, creation, or deletion.

From the tool's own definition: "List every data collection, name, item count, last activity. Renders no UI."

Risk signals: Bulk/mass operation — affects multiple targets

## Use case

AI agents call list_data_collections to retrieve information from Open Mcp Apps 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 Open Mcp Apps:

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

## Other tools on Open Mcp Apps (31)

- `data_delete_item` — Destructive — https://policylayer.com/tools/2nd1st-open-mcp-apps/data-delete-item.md
- `delete_app` — Destructive — https://policylayer.com/tools/2nd1st-open-mcp-apps/delete-app.md
- `file_delete` — Destructive — https://policylayer.com/tools/2nd1st-open-mcp-apps/file-delete.md
- `call_function` — Execute — https://policylayer.com/tools/2nd1st-open-mcp-apps/call-function.md
- `app_store_list` — Read — https://policylayer.com/tools/2nd1st-open-mcp-apps/app-store-list.md
- `data_changes` — Read — https://policylayer.com/tools/2nd1st-open-mcp-apps/data-changes.md
- `data_list` — Read — https://policylayer.com/tools/2nd1st-open-mcp-apps/data-list.md
- `file_list` — Read — https://policylayer.com/tools/2nd1st-open-mcp-apps/file-list.md
- `file_read` — Read — https://policylayer.com/tools/2nd1st-open-mcp-apps/file-read.md
- `get_app` — Read — https://policylayer.com/tools/2nd1st-open-mcp-apps/get-app.md
- `get_app_guide` — Read — https://policylayer.com/tools/2nd1st-open-mcp-apps/get-app-guide.md
- `get_app_html` — Read — https://policylayer.com/tools/2nd1st-open-mcp-apps/get-app-html.md
- `get_data_version` — Read — https://policylayer.com/tools/2nd1st-open-mcp-apps/get-data-version.md
- `get_ui_preference_schema` — Read — https://policylayer.com/tools/2nd1st-open-mcp-apps/get-ui-preference-schema.md
- `list_app_checkpoints` — Read — https://policylayer.com/tools/2nd1st-open-mcp-apps/list-app-checkpoints.md
- `list_apps` — Read — https://policylayer.com/tools/2nd1st-open-mcp-apps/list-apps.md
- `preview_app_store_entry` — Read — https://policylayer.com/tools/2nd1st-open-mcp-apps/preview-app-store-entry.md
- `apply_data_writes` — Write — https://policylayer.com/tools/2nd1st-open-mcp-apps/apply-data-writes.md
- `data_add_item` — Write — https://policylayer.com/tools/2nd1st-open-mcp-apps/data-add-item.md
- `data_move_item` — Write — https://policylayer.com/tools/2nd1st-open-mcp-apps/data-move-item.md
- `data_update_item` — Write — https://policylayer.com/tools/2nd1st-open-mcp-apps/data-update-item.md
- `edit_app` — Write — https://policylayer.com/tools/2nd1st-open-mcp-apps/edit-app.md
- `file_write` — Write — https://policylayer.com/tools/2nd1st-open-mcp-apps/file-write.md
- `file_write_begin` — Write — https://policylayer.com/tools/2nd1st-open-mcp-apps/file-write-begin.md
- `file_write_chunk` — Write — https://policylayer.com/tools/2nd1st-open-mcp-apps/file-write-chunk.md
- `file_write_commit` — Write — https://policylayer.com/tools/2nd1st-open-mcp-apps/file-write-commit.md
- `install_from_app_store` — Write — https://policylayer.com/tools/2nd1st-open-mcp-apps/install-from-app-store.md
- `promote_app` — Write — https://policylayer.com/tools/2nd1st-open-mcp-apps/promote-app.md
- `restore_app` — Write — https://policylayer.com/tools/2nd1st-open-mcp-apps/restore-app.md
- `save_app` — Write — https://policylayer.com/tools/2nd1st-open-mcp-apps/save-app.md
- …and 1 more: https://policylayer.com/tools/2nd1st-open-mcp-apps.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=2nd1st-open-mcp-apps · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/2nd1st-open-mcp-apps