Central Bank Rates (AllRatesToday)
Official central-bank & tax-authority rates from 100+ sources. No API key needed to start.
Open source Open in the app JSON README (API)
About
Official central-bank & tax-authority rates from 100+ sources. No API key needed to start.
Details
- Kind
- MCP servers
- Topic
- Finance & crypto
- Publisher
- com.allratestoday
- Origin
- official
- Category
- ferramentas
- Transport
- local
- Version
- 0.2.0
- Stars
- 1
- Last push
- 2026-08-30T09:21:06Z
- Repository state
- ativo
- Language
- TypeScript
- License
- MIT
- Added
- 2026-08-29 03:00:59
- Updated
- 2026-08-30 10:00:12
- Origin id
com.allratestoday/central-bank-mcp
README
# Central Bank Rates MCP Server — @allratestoday/central-bank-mcp
[](https://www.npmjs.com/package/@allratestoday/central-bank-mcp)
[](https://www.npmjs.com/package/@allratestoday/central-bank-mcp)
[](./LICENSE)
[](https://modelcontextprotocol.io)
[](https://www.typescriptlang.org/)
**Give your AI assistant the official exchange rates that compliance, tax, and accounting actually require. A Model Context Protocol server that lets Claude Code, Cursor, Claude Desktop, Windsurf, and any MCP-compatible client fetch published central-bank and tax-authority rates from 60+ institutions — ECB, Fed, Bank of Japan, HMRC, US Treasury, and more — via the [AllRatesToday API](https://allratestoday.com/central-bank-rates-api/).**
After installation, your assistant can answer questions like:
- *"What is the ECB's official USD/EUR rate today?"*
- *"What HMRC rate should I use for this March invoice?"*
- *"Show me the Bank of Japan's official rate for every day of Q1."*
- *"Compare the official USD/LKR rate across every central bank that publishes one."*
## ⚖️ Official rates vs mid-market rates
Everything this server returns is an **official published rate**: fixed once the institution publishes it, carrying that institution's own publication date — the number tax authorities, auditors, and customs require. It is *not* the live market rate. For **live mid-market rates** (price display, conversion, anything that should track the market), use the companion server [`@allratestoday/mcp-server`](https://www.npmjs.com/package/@allratestoday/mcp-server). The two can diverge by several percent — pick by use case. Methodology: [allratestoday.com/official-rates-methodology](https://allratestoday.com/official-rates-methodology/).
## 🚀 Why this server?
- 🏛️ **100+ official sources** — central banks (ECB, Fed, BOJ, SNB, RBI, …) plus tax authorities (HMRC, US Treasury, …), each served from its own published tables
- 📅 **Point-in-time correctness** — ask for any date; weekends and holidays roll back to the rate legally in force, and the response tells you which publication date applied
- 📊 **Cross-bank comparison** — one call returns every institution's rate for a pair, with min/max/median and spread stats
- 🧮 **Honest derivations** — pairs a bank doesn't publish directly are cross-computed only within that bank's own table and flagged `derived`; banks are never mixed
- 🔓 **Works with no API key** — installs and answers out of the box; the latest published table of every source is open
- 🧰 **Five focused tools** — small surface, easy for the model to use correctly
- 🔌 **Works everywhere MCP does** — stdio transport, MCP 1.x; Claude Code, Cursor, Claude Desktop, Windsurf, or any generic host
## 🔓 Keyless mode — what works with no setup
Install it with no configuration at all and it starts, connects, and answers:
| Tool | Keyless | What you get |
|---|---|---|
| `list_central_banks` | ✅ | Every covered institution, from a catalogue bundled with the package (no coverage dates). |
| `get_official_rates` | ✅ | The **latest published table** of any source, or one pair from it, with the publisher's own `rate_date`. |
| `get_official_rates` with a `date` | 🔑 | One sentence explaining how to get a key. |
| `get_official_rate_history` | 🔑 | Same. |
| `compare_official_rates` | 🔑 | Same. |
| `get_publication_calendar` | 🔑 | Same. |
The keyless path reads the open, edge-cached `/api/open/central-bank/{bank}`
endpoint — free to use with a visible attribution link back to allratestoday.com
(the exact wording ships in each response's `attribution` field).
## 🔑 Get your API key (free)
A key adds historical dates, time series, cross-bank comparison and publication
calendars. The free tier covers the latest published tables and light historical
use — **no credit card required**. Deep history and dated tables need a paid plan.
1. Register at [allratestoday.com/register](https://allratestoday.com/register) — 30 seconds
2. Verify your email
3. Copy your key from the dashboard (format: `art_live_xxxxx`)
4. Use it as `ALLRATES_API_KEY` in the configs below
Without one the server prints a short summary of keyless mode on stderr and
keeps running — it never exits, because an MCP server that exits breaks the
host client's whole configuration.
## 🧩 Easiest install: the Claude Code plugin
If you use Claude Code, install the plugin instead of configuring this server by
hand — it bundles both AllRatesToday MCP servers, two skills, and five slash
commands (`/rate`, `/convert`, `/official-rate`, `/fx-history`,
`/add-currency-support`):
```
/plugin marketplace add AllRates-Today/claude-code-plugin
/plugin install allratestoday@allratestoday
```
Everything below still applies for other MCP clients.
## 📦 Installation
```bash
# Run without installing (recommended)
npx -y @allratestoday/central-bank-mcp
```
```bash
# Or install globally
npm install -g @allratestoday/central-bank-mcp
central-bank-mcp
```
Both commands launch the stdio MCP server and wait for a client to connect — your MCP client launches them as a subprocess.
## 🏁 Quick setup per client
### Claude Code
```bash
claude mcp add central-bank-rates -- npx -y @allratestoday/central-bank-mcp
claude mcp env central-bank-rates ALLRATES_API_KEY=art_live_xxxxx
```
Restart Claude Code. Verify by asking: *"Which central banks can you fetch official rates from?"*
### Cursor
Edit `~/.cursor/mcp.json` (or `.cursor/mcp.json` inside your project):
```json
{
"mcpServers": {
"central-bank-rates": {
"command": "npx",
"args": ["-y", "@allratestoday/central-bank-mcp"],
"env": {
"ALLRATES_API_KEY": "art_live_xxxxx"
}
}
}
}
```
### Claude Desktop
Edit `claude_desktop_config.json` (Settings → Developer → Edit Config) and add the same `mcpServers` block as the Cursor example above, then restart Claude Desktop.
## 🧰 Tools
| Tool | What it does | Plan |
|---|---|---|
| `list_central_banks` | All covered institutions with codes, metadata, latest date | Free (keyless: bundled catalogue) |
| `get_official_rates` | A bank's published table (or one pair), latest or for a given date | Keyless (latest) / Paid (dated) |
| `get_official_rate_history` | Date-by-date official series for one pair | Paid, billed ~1 call per month covered |
| `compare_official_rates` | One pair across every bank, with spread stats | Free (key required) |
| `get_publication_calendar` | Dates a bank actually published (no values) | Free (key required) |
## 🔒 Privacy
Only the request parameters and your API key ever reach allratestoday.com — never conversation context.
## 📚 More from AllRatesToday
- [Central bank REST API docs](https://allratestoday.com/central-bank-rates-api/)
- [Per-bank npm SDKs](https://github.com/AllRates-Today)
- [`@allratestoday/mcp-server`](https://www.npmjs.com/package/@allratestoday/mcp-server) — live mid-market rates MCP server
## License
MIT © AllRatesToday