Currency (Frankfurter)

Foreign-exchange conversions at ECB reference rates via Frankfurter. Convert any amount between ~40 supported currencies.

LIVE STREAMABLE HTTP MIT 2 TOOLS

§ OVERVIEW

Foreign-exchange conversions at ECB reference rates via Frankfurter. Convert any amount between ~40 supported currencies.

mcpmeter sits between agent and publisher: authenticate the bearer key, forward the JSON-RPC body unchanged, count tool-call envelopes in the response, write a ledger row, return the response unchanged. The publisher never sees the consumer's API key. The consumer never sees the publisher's secret. The proxy is open source so the meter can be inspected.

§ TOOLS

2 tools Read tools are read-only; write tools mutate state.

TOOL

TYPE

DESCRIPTION

convert

READ

Convert an amount from one currency to another at the latest reference rate.

list_currencies

READ

Returns the list of supported currencies.

§ INTEGRATION

Drop the proxy URL and your bearer key into any MCP-compatible agent. Below: the configuration block for Claude Desktop. The same shape works in Cursor, Cody, the OpenAI Apps SDK, and OpenRouter with a one-line difference.

            claude_desktop_config.json
            VERIFIED
          

{
  "mcpServers": {
    "currency": {
      "url":     "https://proxy.mcpmeter.com/currency",
      "headers": {
        "Authorization": "Bearer mcpm_live_…"
      }
    }
  }
}

The proxy authenticates the bearer token, looks up the price, forwards the call to the upstream MCP, returns the response unchanged, and writes a usage record.

§ PRICING

PER_CALL pricing at $0.0002 / call (USD).

§ TRUST & COMPLIANCE

NO PAYLOAD RETENTION

JSON-RPC bodies pass through. We log call metadata only.

PCI PASSTHROUGH

For PCI scope, mcpmeter is a network passthrough.

OPEN-SOURCE PROXY

Metering code is auditable on GitHub ↗; reconciles to Stripe nightly.

AUDIT LOGS

13 months retention in your region. CSV export.