# zweitwohnungsteuer_ranking

Ranking of German cities by Zweitwohnungsteuer rate: highest or lowest, plus the average, count with a computable rate, and count of cities with no second-home tax.

Agent View of the PolicyLayer registry record for `zweitwohnungsteuer_ranking`. HTML page: https://policylayer.com/tools/dev-crelvo-german-tax-data/zweitwohnungsteuer-ranking

## Facts

- Tool: `zweitwohnungsteuer_ranking`
- Server: German Tax Data (`https://data.crelvo.dev/mcp`) — https://policylayer.com/tools/dev-crelvo-german-tax-data.md
- Homepage: https://github.com/https://data.crelvo.dev/mcp
- Risk category: Read (Low risk)
- Registry record: grade C, identity unverified
- Server auth posture: open
- Server rate-limited: no
- Parameters: 2
- Recommended policy verdict: Allowed

## Parameters

| Parameter | Type | Required | Description |
| --- | --- | --- | --- |
| `limit` | integer | no | How many cities to return |
| `order` | string | no |  |

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": "zweitwohnungsteuer_ranking",
    "arguments": {}
  }
}
```

## Why zweitwohnungsteuer_ranking is rated Low

This tool queries and returns aggregated tax rate data in read-only fashion. It computes statistics (highest/lowest rates, averages, counts) across municipalities but does not create, modify, delete, or execute operations. The blast radius of misuse is minimal—an AI agent could only retrieve or display potentially sensitive public tax policy information. No destructive, financial, or code execution risks are present.

From the tool's own definition: "Tool provides ranking and statistical aggregation of German second-home tax rates by city. Description indicates it 'retrieves' data through rankings, averages, and counts with no mention of modification, deletion, or execution capabilities."

## Use case

AI agents call zweitwohnungsteuer_ranking to retrieve information from German Tax Data 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 German Tax Data:

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

## Other tools on German Tax Data (8)

- `hundesteuer_by_state` — Read — https://policylayer.com/tools/dev-crelvo-german-tax-data/hundesteuer-by-state.md
- `hundesteuer_lookup` — Read — https://policylayer.com/tools/dev-crelvo-german-tax-data/hundesteuer-lookup.md
- `hundesteuer_ranking` — Read — https://policylayer.com/tools/dev-crelvo-german-tax-data/hundesteuer-ranking.md
- `list_datasets` — Read — https://policylayer.com/tools/dev-crelvo-german-tax-data/list-datasets.md
- `pfaendung_calc` — Read — https://policylayer.com/tools/dev-crelvo-german-tax-data/pfaendung-calc.md
- `zweitwohnungsteuer_by_state` — Read — https://policylayer.com/tools/dev-crelvo-german-tax-data/zweitwohnungsteuer-by-state.md
- `zweitwohnungsteuer_changes` — Read — https://policylayer.com/tools/dev-crelvo-german-tax-data/zweitwohnungsteuer-changes.md
- `zweitwohnungsteuer_lookup` — Read — https://policylayer.com/tools/dev-crelvo-german-tax-data/zweitwohnungsteuer-lookup.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=dev-crelvo-german-tax-data · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/dev-crelvo-german-tax-data