# list_emner

List the StatFin subject areas (~140 databases, e.g.

Agent View of the PolicyLayer registry record for `list_emner`. HTML page: https://policylayer.com/tools/3121n-nor-data-statfin-mcp/list-emner

## Facts

- Tool: `list_emner`
- Server: Statfin (`3121n/nor-data-statfin-mcp`) — https://policylayer.com/tools/3121n-nor-data-statfin-mcp.md
- Homepage: https://github.com/3121n/nor-data-statfin-mcp
- Risk category: Read (Low risk)
- Registry record: grade A, 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_emner",
    "arguments": {}
  }
}
```

## Why list_emner is rated Low

This tool retrieves and queries public statistical metadata from Statistics Finland's database catalogue. It is a read-only enumeration operation with no side effects, no ability to modify or delete data, and no execution of arbitrary code. The blast radius of misuse is minimal—an agent could only enumerate available subject areas, which is already public information.

From the tool's own definition: "Tool name 'list_emner' (list subjects) and description indicating it lists subject areas from ~140 databases in StatFin. No modification, deletion, or execution of code is mentioned."

## Use case

AI agents call list_emner to retrieve information from Statfin 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 Statfin:

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

## Other tools on Statfin (3)

- `hent_data` — Read — https://policylayer.com/tools/3121n-nor-data-statfin-mcp/hent-data.md
- `hent_tabell` — Read — https://policylayer.com/tools/3121n-nor-data-statfin-mcp/hent-tabell.md
- `sok_tabell` — Read — https://policylayer.com/tools/3121n-nor-data-statfin-mcp/sok-tabell.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=3121n-nor-data-statfin-mcp · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/3121n-nor-data-statfin-mcp