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Exchange Rates MCP Server

answering

Exchange Rates MCP Server is answering right now. Last checked 14 min ago. 442 installs a week from npm. It exposes 7 tools. Last commit 13 Sep 2026.

Convert currencies, get FX rates, and query historical ECB exchange rate data.

Installs per day peak 338 · avg 36 · +476% w/w
a month agotoday
Uptime history 47 days of history · worst day 0%
47 days agonow
100.0%
Uptime 24h
91 of 91 checks
7
Tools
read from the server
357 ms
Response time
average over 24h
442
Installs / week
npm and PyPI

What changed 16

Every tool that appeared, vanished or quietly changed what it asks for. Recorded since 25 August 2026. No other catalogue keeps this.

12 Sep 4 tools changed the parameters they ask for fx_convert_currency, fx_dataframe_query, fx_get_rate and 1 more
12 Sep 2 tool descriptions were rewritten fx_get_rates, fx_get_timeseries
12 Sep a tool changed version2 times that day
25 Aug 7 tools changed the parameters they ask for fx_convert_currency, fx_dataframe_describe, fx_dataframe_query and 4 more
25 Aug a tool changed version
and 1 more, back to 25 August 2026

Nothing serious here today

Today is the operative word: we check Exchange Rates MCP Server every 15 minutes and re-read its code on every release. Watch it and you find out the day that stops being true.

Three servers free · no card

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 14 min ago.

run in your terminal
claude mcp add exchange-rates-mcp-server --transport http https://exchange-rates.caseyjhand.com/mcp
~/Library/Application Support/Claude/claude_desktop_config.json
{
  "mcpServers": {
    "exchange-rates-mcp-server": {
      "url": "https://exchange-rates.caseyjhand.com/mcp"
    }
  }
}
~/.codex/config.toml
[mcp_servers.exchange-rates-mcp-server]
url = "https://exchange-rates.caseyjhand.com/mcp"
.cursor/mcp.json
{
  "mcpServers": {
    "exchange-rates-mcp-server": {
      "url": "https://exchange-rates.caseyjhand.com/mcp"
    }
  }
}
.vscode/mcp.json
{
  "mcpServers": {
    "exchange-rates-mcp-server": {
      "url": "https://exchange-rates.caseyjhand.com/mcp"
    }
  }
}

This one needs environment variables set before it will start: FRANKFURTER_BASE_URL (Frankfurter API base URL. Override for local testing or self-hosted instances.), FX_TIMESERIES_CANVAS_THRESHOLD_DAYS (Day range above which fx_get_timeseries spills results to DataCanvas for SQL analytics, when DataCanvas is enabled (CANVAS_PROVIDER_TYPE=duckdb). Longer ranges return inline otherwise.), FX_ENABLE_CANVAS_DROP (Enable fx_dataframe_drop, which permanently removes one staged table or view from a DataCanvas. Disabled by default; the tool stays listed but uncallable until set to true.), MCP_HTTP_HOST (The hostname for the HTTP server.), MCP_HTTP_PORT (The port to run the HTTP server on.), MCP_HTTP_ENDPOINT_PATH (The endpoint path for the MCP server.), MCP_AUTH_MODE (Authentication mode to use: 'none', 'jwt', or 'oauth'.), MCP_LOG_LEVEL (Sets the minimum log level for output (e.g., 'debug', 'info', 'warn').). The author declared them in the registry entry; get the values from the project itself.

Available tools 7

Read directly from the server with tools/list, grouped by what they act on. If a tool disappears, we record the date.

dataframe
fx_dataframe_describe
List tables and columns staged on a DataCanvas from a prior fx_get_timeseries call. Required first step before fx_dataframe_query — use it to discover table names and column schemas. Requires DataCanvas (CANVAS_PROVIDER_TYPE=duckdb) — without it this tool is not listed at all and fx_get_timeseries returns every range inline.
fx_dataframe_query
Run a read-only SQL SELECT against DataCanvas tables staged by fx_get_timeseries. Supports aggregations, GROUP BY, window functions, and JOINs across multiple registered tables. Run fx_dataframe_describe first to discover table names and column schemas. Requires DataCanvas (CANVAS_PROVIDER_TYPE=duckdb) — without it this tool is not listed at all and fx_get_timeseries returns every range inline.
convert
fx_convert_currency
Convert an amount between any two currencies at the latest or a historical rate. Returns the converted amount, the rate used, the actual rate date, and whether the date was snapped from a weekend/holiday to the prior business day. Cross-rates are triangulated through EUR automatically.
currencies
fx_list_currencies
List all supported ISO 4217 currency codes with their full names. Call this before converting to disambiguate "dollars" (USD vs AUD vs CAD vs HKD vs SGD) or to validate a user-supplied currency code. Covers the ~30 ECB reference currencies.
rate
fx_get_rate
Get the exchange rate for a currency pair on a given date (default: latest). Returns the rate, the actual rate date (which may differ from the requested date on weekends/holidays — ECB publishes business days only), and source provenance. Cross-rates are triangulated through EUR automatically. A same-currency pair returns a rate of 1, dated to the same publication day any other pair would report for that date. Use fx_convert_currency when you want the converted amount; use this tool when you only need the rate number.
rates
fx_get_rates
Get all available exchange rates for one base currency in a single snapshot. Useful for bulk comparison and seeding downstream tools. Returns a map of quote currency → rate, the actual snapshot date, and whether a historical date was snapped from a weekend/holiday to the prior business day. Optionally filter to a subset of quote currencies via symbols. Listing the base currency itself in symbols is accepted and returns a rate of 1 for it.
timeseries
fx_get_timeseries
Get historical daily exchange rates for a currency pair over a date range. ECB publishes on business days only — weekends and holidays produce no entry, and no date outside the requested range is ever returned, so a range covering only non-publication days comes back with an empty rates map and a notice explaining why. A same-currency pair returns a rate of 1 on each publication day in the range. Inline results are returned as a date→rate map paged at 500 publication days: rate_count is always the total for the requested range, and when a page is cut short the response carries truncated=true and next_start_date — call again with start_date set to next_start_date and the same end_date for the next page. When DataCanvas is enabled (CANVAS_PROVIDER_TYPE=duckdb) long ranges (>90 days by default) spill to it instead: the response carries spilled=true, a canvas_id, and a table_name — call fx_dataframe_describe to inspect the staged table, then fx_dataframe_query to run SQL against it. Without DataCanvas long ranges are paged inline (spilled=false) and the notice says so.

Endpoints

URLTransportStateLatencyChecked
https://exchange-rates.caseyjhand.com/mcp streamable-http answering 230 ms 14 min ago

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Exchange Rates MCP Server — questions

Answers built from our own checks of this server.

What can Exchange Rates MCP Server do?
It exposes 7 tools, read directly from the server on our last check. Among them: fx_convert_currency, fx_dataframe_describe, fx_dataframe_query, fx_get_rate, fx_get_rates, fx_get_timeseries and 1 more. The full list with descriptions is on this page — we take it from the server itself via tools/list, not from a README. How MCP servers expose tools in the first place →
Is Exchange Rates MCP Server working right now?
We send a real MCP handshake every 15 minutes. Over the last 24 hours 91 of 91 checks got a reply (100.0%), average response time 357 ms. The bar chart above shows every period we have measured.
How do I connect Exchange Rates MCP Server?
Copy the ready config from this page — we generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each with the file path that client actually reads. It is a remote server, so there is nothing to install — the client connects to the address.
Does Exchange Rates MCP Server need an API key?
No. Exchange Rates MCP Server completed a full MCP handshake with us as an anonymous client and listed its tools without asking for anything. All 7 of them are readable on this page. This is what we observed, not what the docs claim.
How fast is Exchange Rates MCP Server?
It answers our handshake in 357 ms on average, which is faster than 43% of all working MCP servers we measure. The comparison comes from our own checks across the whole registry, every 15 minutes.
How many people use Exchange Rates MCP Server?
The npm package @cyanheads/exchange-rates-mcp-server was installed 442 times in the last week. Week over week that is +476%. We show installs rather than GitHub stars on purpose: a star is a bookmark, an install is someone actually running it.
Is Exchange Rates MCP Server open source?
Yes — it is published under the Apache-2.0 licence, written in TypeScript and 1 stars on GitHub. The source link is on this page, so you can read exactly what it does with your data before you connect it.