This server has a remotely hosted endpoint. Open its connector listing for connection details, authentication requirements, and setup instructions:
A sleek currency converter you can self-host in seconds. Compare up to 5 currencies at once with live exchange rates, swap them around, search through 50 options. One HTML file, zero setup.
→ Try it live · → Use it inside Claude or ChatGPT
Currensor also runs as a plugin (an MCP server) for Claude and ChatGPT. Ask for a conversion in plain words and a live Currensor card appears right in the chat. Change the amount on the card and every currency updates instantly.
Plugin address:
https://currensor-mcp.currensor-mcp.workers.dev/mcpApp | How to add it |
Claude | Settings → Connectors → Add custom connector → paste the address → choose No sign-in |
ChatGPT | Settings → Plugins → Developer mode on, then + → Create custom MCP server → paste the address → No Auth |
Then ask: "Use Currensor to convert 250 CAD to INR, EUR and JPY."
Live mid-market rates for 166 currencies, refreshed daily, with a backup rate feed
No sign-in, no API key, nothing about you stored. The server keeps only anonymous daily counts (which app, which currency pair) to see if people find it useful
Free and open source: the server is in mcp/ and runs on Cloudflare Workers
Related MCP server: dolar-argentina
Live exchange rates — Updated hourly; the page checks again just after each update, and falls back to two daily public feeds if the hourly service is down
50 currencies — Grouped by region (Americas, Europe, Asia & Pacific, Middle East & Africa)
Multi-currency view — See up to 5 conversions side by side
Smart swap logic — Picking a currency already in use auto-swaps instead of duplicating
Drag to reorder — Rearrange your target currencies by dragging the grip handle
Dark & Light themes — Trading terminal dark mode or clean travel app light mode, saved to your preference
Shareable conversion cards — Generate a branded PNG image of your conversion to share anywhere
Export / Copy — One tap copies all conversions with currency symbols, ready to paste into WhatsApp, Slack, or email
Bottom-sheet picker — Mobile-friendly currency selector with instant search
Cross-platform flags — Twemoji flag images that render identically on every device
Graceful fallback — Bundled rates kick in if APIs are unavailable
Zero dependencies — One HTML file. No frameworks, no build step, no node_modules
Option 1: Just open it
git clone https://github.com/Kay0sstheory/Currensor.git
cd Currensor
# Open index.html in your browserOption 2: GitHub Pages (free hosting) Already live at kay0sstheory.github.io/Currensor
Americas: USD, CAD, MXN, BRL, ARS, CLP, COP, PEN Europe: EUR, GBP, CHF, SEK, NOK, DKK, PLN, CZK, HUF, RON, TRY, RUB, UAH, ISK Asia & Pacific: JPY, CNY, INR, KRW, SGD, HKD, TWD, THB, MYR, IDR, PHP, VND, PKR, BDT, LKR, AUD, NZD Middle East & Africa: AED, SAR, QAR, KWD, BHD, ILS, EGP, ZAR, NGN, KES, MAD
Pure HTML, CSS, JavaScript — no frameworks, no libraries
Hourly rates service on Cloudflare Workers (primary, source in mcp/) + Open Exchange Rates API and Currency API (daily backups)
Twemoji CDN for cross-platform flag rendering
DM Sans + Space Mono fonts via Google Fonts
Canvas API for shareable card generation
Dark/light themes via CSS variables with localStorage persistence
Mobile-responsive down to 360px viewport
v2.2 — Claude & ChatGPT plugin with an in-chat card; refreshed backup rates
v2.1 — Swap logic fix, drag-to-reorder, cross-platform Twemoji flags, bigger rate text, dark/light theme toggle, shareable conversion cards, export/copy with currency symbols
v2.0 — Live exchange rates, 50 currencies grouped by region, live status indicator, improved mobile UX
v1.0 — Initial release with bundled rates and 20 currencies
Interactive globe for selecting target currencies (v3)
Historical rate sparkline charts
Rate heatmap — weekly performance at a glance
Volatility indicator per currency pair
Purchasing power comparison
Shareable URLs with encoded conversion state
Favorites saved to localStorage
I'm building tools with AI and learning in public. I can't write code from scratch (yet), but I can design, think through problems, and ship real products by collaborating with AI. Every project teaches me something new.
Follow along: @Kay0sstheory
MIT — do whatever you want with it.
This server cannot be deployed
Live & historical FX rates and currency conversion for AI agents. No API keys.
Live & historical FX rates and currency conversion for AI agents. No API keys.
Convert currencies on the daily European Central Bank reference rates. No API key, no signup.
Convert currencies on the daily European Central Bank reference rates. No API key, no signup.