# frankfurter-latest

Get the latest ECB reference FX rates for a base currency and optional target list.

Agent View of the PolicyLayer registry record for `frankfurter-latest`. HTML page: https://policylayer.com/tools/io-github-derekslinz-meta-data-mcp/frankfurter-latest

## Facts

- Tool: `frankfurter-latest`
- Server: Meta Data Mcp (`pypi:meta-data-mcp`) — https://policylayer.com/tools/io-github-derekslinz-meta-data-mcp.md
- Install: `npx -y pypi:meta-data-mcp`
- Homepage: https://github.com/derekslinz/meta-data-mcp
- 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": "frankfurter-latest",
    "arguments": {}
  }
}
```

## Why frankfurter-latest is rated Low

This tool queries and retrieves publicly available foreign exchange rate data from the European Central Bank via the Frankfurter API. It has no side effects, does not create, modify, or delete data, and does not execute code or financial transactions. It is a straightforward data retrieval operation, characteristic of the Read category.

From the tool's own definition: "Tool name 'frankfurter-latest' and description 'Get the latest ECB reference FX rates' indicate a query operation that retrieves currency exchange rate data with no modification or execution capability."

## Use case

AI agents call frankfurter-latest to retrieve information from Meta Data 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 Meta Data Mcp:

```json
{
  "version": "1",
  "default": "deny",
  "tools": {
    "frankfurter-latest": {}
  }
}
```

## Other tools on Meta Data Mcp (395)

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- `wikidata-sparql` — Execute — https://policylayer.com/tools/io-github-derekslinz-meta-data-mcp/wikidata-sparql.md
- `arxiv-get-paper` — Read — https://policylayer.com/tools/io-github-derekslinz-meta-data-mcp/arxiv-get-paper.md
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- `ca-open-gov-list-organizations` — Read — https://policylayer.com/tools/io-github-derekslinz-meta-data-mcp/ca-open-gov-list-organizations.md
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- …and 365 more: https://policylayer.com/tools/io-github-derekslinz-meta-data-mcp.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=io-github-derekslinz-meta-data-mcp · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/io-github-derekslinz-meta-data-mcp