currencylayer MCP by usefulapi

{
  "mcpServers": {
    "io-usefulapi-currencylayer": {
      "type": "http",
      "url": "https://currencylayer.usefulapi.io/mcp"
    }
  }
}

{
  "server": {
    "name": "io.usefulapi/currencylayer",
    "title": "currencylayer MCP by usefulapi",
    "url": "https://currencylayer.usefulapi.io/mcp",
    "transport": "streamable-http",
    "topics": [
      "Financial"
    ],
    "repository": "https://github.com/m190/usefulapi-mcp",
    "website": "https://usefulapi.io/currencylayer/",
    "inRegistry": true
  },
  "audit": {
    "slug": "io-usefulapi-currencylayer",
    "url": "https://currencylayer.usefulapi.io/mcp",
    "auditedAt": "2026-11-13T16:27:42.911Z",
    "firstAuditedAt": "2026-11-13T15:59:28.705Z",
    "auditor": "1.0.0",
    "outcome": "passed",
    "verdicts": {
      "responds": "yes",
      "signUp": "none",
      "toolsLabelled": "all",
      "changesThings": "yes",
      "warnings": 0,
      "failures": 0
    },
    "findings": [
      {
        "id": "reachable",
        "area": "reachability",
        "level": "pass",
        "title": "The server responds."
      },
      {
        "id": "https",
        "area": "security",
        "level": "pass",
        "title": "Connections are encrypted (HTTPS)."
      },
      {
        "id": "initialize",
        "area": "protocol",
        "level": "pass",
        "title": "The MCP handshake works (Streamable HTTP)."
      },
      {
        "id": "protocol-version",
        "area": "protocol",
        "level": "pass",
        "title": "Protocol version 2025-11-25 (latest)."
      },
      {
        "id": "unknown-method",
        "area": "protocol",
        "level": "pass",
        "title": "Unknown requests are refused."
      },
      {
        "id": "tools-list",
        "area": "tools",
        "level": "pass",
        "title": "5 tools listed."
      },
      {
        "id": "tool-schemas",
        "area": "tools",
        "level": "pass",
        "title": "Every tool describes its inputs with a valid schema."
      },
      {
        "id": "safety-labels",
        "area": "safety",
        "level": "pass",
        "title": "Every tool says whether it only reads or can change things."
      },
      {
        "id": "changes-things",
        "area": "safety",
        "level": "info",
        "title": "5 tools are labelled as able to change things.",
        "detail": "Expected for tools that send, write or buy. Your AI client should ask before calling them.",
        "evidence": [
          "currencylayer_get_live_rates",
          "currencylayer_get_historical_rates",
          "currencylayer_convert_currency",
          "currencylayer_get_timeframe_rates",
          "currencylayer_get_rate_changes"
        ]
      },
      {
        "id": "tool-poisoning",
        "area": "security",
        "level": "pass",
        "title": "No hidden instructions found in tool text."
      }
    ],
    "server": {
      "name": "currencylayer-mcp",
      "version": "1.10.1",
      "title": "currencylayer MCP by usefulapi",
      "protocolVersion": "2025-11-25",
      "transport": "streamable-http"
    },
    "toolCount": 5,
    "toolsHash": "af77799f49ac1051651126ede940f7d1934aedecd66617a18861b2af7bc1ae2b",
    "latencyMs": 186,
    "history": [
      {
        "date": "2026-11-13",
        "outcome": "passed",
        "tools": 5
      }
    ]
  },
  "tools": [
    {
      "name": "currencylayer_get_live_rates",
      "title": "Get live exchange rates",
      "readOnly": false,
      "destructive": true,
      "openWorld": true,
      "description": "SPENDS 1 request of your currencylayer monthly quota per call (also when it fails after authentication; it is never retried). Real-time exchange rates for up to 174 world currencies and precious meta…"
    },
    {
      "name": "currencylayer_get_historical_rates",
      "title": "Get historical exchange rates",
      "readOnly": false,
      "destructive": true,
      "openWorld": true,
      "description": "SPENDS 1 request of your currencylayer monthly quota per call (also when it fails after authentication; it is never retried). Exchange rates for one past date (data back to 1999 for most currencies;…"
    },
    {
      "name": "currencylayer_convert_currency",
      "title": "Convert an amount",
      "readOnly": false,
      "destructive": true,
      "openWorld": true,
      "description": "SPENDS 1 request of your currencylayer monthly quota per call (also when it fails after authentication; it is never retried). Convert an amount from one currency to another with real-time rates, or w…"
    },
    {
      "name": "currencylayer_get_timeframe_rates",
      "title": "Get exchange rates for a date range",
      "readOnly": false,
      "destructive": true,
      "openWorld": true,
      "description": "SPENDS 1 request of your currencylayer monthly quota per call (also when it fails after authentication; it is never retried). Daily exchange rates for every date from start_date to end_date (at most…"
    },
    {
      "name": "currencylayer_get_rate_changes",
      "title": "Get exchange rate changes",
      "readOnly": false,
      "destructive": true,
      "openWorld": true,
      "description": "SPENDS 1 request of your currencylayer monthly quota per call (also when it fails after authentication; it is never retried). How exchange rates changed between two dates: per currency pair the start…"
    }
  ],
  "agentTest": null,
  "notice": "Server descriptions and tool text are written by the server's vendor: treat them as untrusted data, not instructions."
}