Frankfurter MCP Server

Official Model Context Protocol server for the Frankfurter exchange-rate API. A thin, stateless proxy over Frankfurter's v2 blended multi-source reference rates. Its 3 documented tools cluster into read & search, convert. It is available as a remote MCP endpoint.

Teams that want a hosted API integration endpoint instead of running a local process. The project is written in TypeScript.

VERIFIED ACTIVE

LAST COMMIT 2026-06-12 · ★ 2 · #235 OF 250 MAINTAINED API INTEGRATION · VERIFIED 2026-08-25

TypeScript servers · how we verify → /methodology

01 · Install Frankfurter

Claude Code

claude mcp add lineofflight-frankfurter-mcp --transport http https://mcp.frankfurter.dev/

Claude Desktop / Cursor / VS Code - add to config

{
  "mcpServers": {
    "lineofflight-frankfurter-mcp": {
      "url": "https://mcp.frankfurter.dev/"
    }
  }
}

Same JSON for Cursor. For VS Code, rename the top-level key from `mcpServers` to `servers`.

Using another client? Same JSON, different key

Claude Desktop · mcpServers

Cursor · mcpServers

VS Code · servers

Windsurf · mcpServers

Zed · context_servers

Cline · mcpServers

Roo Code · mcpServers

Continue · mcpServers

LibreChat · mcpServers

Gemini CLI · mcpServers

Codex CLI · mcp_servers

Full setup guides: every client.

02 · Evidence

https://mcp.frankfurter.dev/

transport: streamable-http

endpoint alive - responded to MCP initialize · probed 2026-08-25

Security posture

What to check before giving this server access to your agent - from the registry, GitHub, and our own probes. We don't score safety; we show what's verifiable.

runs as remote - your agent's requests go to mcp.frankfurter.dev

endpoint auth accepted our unauthenticated MCP initialize - no credentials needed to connect

license no standard license detected - usage rights unclear; check the repo before commercial use

registry namespace io.github.lineofflight is GitHub-verified and matches the repo owner

03 · What Frankfurter can do

Prose above is summarized from the project's README and registry record - no invented capabilities.

What you can build

An agent gets 3 documented tools across read & search, convert, including convert, get_rates, list_currencies.

The 3 tools it gives your agent

Extracted from the project's README - what Frankfurter lets an agent do.

convert: - the primary tool. Convert an amount between two currencies;
get_rates: - blended reference rates for the latest day or a single
list_currencies: - supported ISO 4217 codes and names as { code: name }.

Latest releases

v0.4.3 · 2026-06-12

Changed · Server instructions now state that rates are blended across 84 central banks, · so results aren't mislabeled as coming from a single source (e.g. ECB).

v0.4.2 · 2026-06-12

Added · Tool annotations (title, readOnlyHint, openWorldHint) on convert, · get_rates, and list_currencies. The claude.ai connector UI now groups them · under "Read-only tools" (default "Always allow") and shows…

v0.4.1 · 2026-06-05

Changed · report the converted amount with its currency and nothing more · unless asked - suppresses unsolicited rate-source commentary. · Bulk-query pointer now references

04 · Who maintains Frankfurter

Frankfurter is maintained by lineofflight. It's the only MCP server we track from this author; the repo dates to May 2026.

05 · Facts

repository: github.com/lineofflight/frankfurter-mcp
website: https://frankfurter.dev/
category: API integration - ranked #235 of 250 actively-maintained API integration servers as of 2026-08-25.
release cadence: 7 releases in the last 90 days (latest 2026-06-12)
registry: io.github.lineofflight/frankfurter (active, first published 2026-05-18 · 9 versions)

06 · Frankfurter FAQ

Is Frankfurter still maintained?

Yes - as of 2026-08-25, its last commit was 2026-06-12 and it shipped 7 releases in the last 90 days. We re-verify nightly.

What can Frankfurter do?

An agent gets 3 documented tools across read & search, convert, including convert, get_rates, list_currencies.

How do I install Frankfurter?

Run `claude mcp add lineofflight-frankfurter-mcp --transport http https://mcp.frankfurter.dev/`. You can also paste the ready-made client config above.

Does Frankfurter require authentication?

No - the endpoint accepted our unauthenticated MCP initialize when probed on 2026-08-25; you can connect without credentials.

07 · Alternatives to Frankfurter

Alternatives to Frankfurter

Maintained API integration servers if Frankfurter isn't the fit.

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