Frankfurter
Convert currencies using rates from 50+ institutional sources like ECB and U.S. Treasury.
Converts amounts between currencies and fetches exchange rates from institutional sources including ECB, HMRC, and U.S. Treasury. Muse can look up current or historical rates, convert money between currencies, and show which institution published each rate.
Try asking Muse: "Convert 100 euros to US dollars using today's exchange rate."
Source: Found in the official MCP Registry (io.github.lineofflight/frankfurter) · First listed September 25, 2026
Last 24 hours
Each bar is one check, every 15 minutes. Green means it answered. Last checked 1 h ago.
Is it safe to connect?
What Muse can see: It does not ask you to sign in, so it cannot see your accounts. It only sees what Muse sends it from your request.
Before it acts: Read what Muse plans to do before you approve it, and remove the app from Muse when you stop using it.
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How to add it to Muse
Not in Muse's Connectors list yet, but Muse can still use it. Copy the request below and paste it into Muse. Muse asks before it shares anything with the app's site. Meta does not review apps used this way, so only use ones you trust. We tested this in the Muse app on September 24, 2026: Muse used an app's link directly this way and returned a live answer.
https://mcp.frankfurter.dev/Not in Muse's Connectors list yet. Muse can still use it: its page gives you a request to paste into Muse.
Technical details: safety screening, tools, response time and recent checks
Response time at the last check: 1058ms. Worked in 100% of checks over 30 days.
Screening · September 25, 2026
Screened, no issues found
Screening looks for known threats and hidden instructions at the time of the check, and runs again weekly and whenever the tool list changes. It cannot see the server's code, so only connect what you need and review what Muse asks to do. How screening works.
Tools · 4
get_ratesLatest or a single day's exchange rates. The raw-rate companion to `convert`. With `provider`, published rates from one or more institutions: on its own base the digits are as published, with the date they took effect.convertConvert an amount from one currency to another. Returns {amount, currency} rounded to the target's minor units. Upstream rounds rates per direction; for low-value sources, flip via `get_rates` for more precision. Pass `provider` to use one institution's published rate, e.g. UST flist_currenciesList all supported ISO 4217 currency codes and their full names (e.g. { 'USD': 'United States Dollar' }).list_providersList the institutions whose rates Frankfurter relays, with key, rate type, frequency (daily, monthly or quarterly) and coverage dates. Use a key as `provider` in `convert` or `get_rates` for that institution's published rates instead of the blend.Recent checks
Link
https://mcp.frankfurter.dev/Questions about Frankfurter in Muse
How do I connect Frankfurter to Muse?
Not in Muse's Connectors list yet, but Muse can still use it. Paste this into Muse: "Use Frankfurter to help me. It is a free service with an MCP server at https://mcp.frankfurter.dev/. It does not need an API key. Ask me before you share anything with it." Muse asks before it shares anything with the app's site. Meta does not review apps used this way, so only use ones you trust. We tested this in the Muse app on September 24, 2026: Muse used an app's link directly this way and returned a live answer.
Is Frankfurter working right now?
At the last check (September 28, 2026, 08:01 UTC) the endpoint was working, answering in 1058ms. Over the last 7 days it answered 100% of health checks. It is checked every 15 minutes.
Is Frankfurter safe to connect to Muse?
It was screened on September 25, 2026 with the result "screened, no issues found". Screening checks the domain against threat feeds and reads the tools for hidden instructions and requests for passwords or card numbers. It cannot see the server's code, so grant only the access you need.
What can Frankfurter do in Muse?
It exposes 4 tools, including get_rates, convert, list_currencies, list_providers. For example, you could ask Muse: "Convert 100 euros to US dollars using today's exchange rate."
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