mcp-cbr-rates

A Model Context Protocol (MCP) server that exposes public Bank of Russia (Центральный банк РФ, CBR) data — currency quotes, key rate, inflation and a compact macro snapshot — to AI agents.

mcp-cbr-rates is part of the atomno family of MCP servers focused on the Russian fintech ecosystem. It is fully open-source, requires no API keys, and is built on top of the official public CBR endpoints.

Features

• Five high-quality MCP tools, each with a strict Pydantic schema: get_rate, history_rates, key_rate, inflation, statistics.
• Built-in TTL (Time-To-Live) cache: 1 hour for daily quotes, 24 hours for historical series, to be polite to the source.
• Async httpx transport with automatic retries on 5xx errors.
• Safe XML parsing via defusedxml.
• 50+ unit tests with respx-mocked HTTP, ≥80 % coverage.
• No secrets, no telemetry, no third-party trackers.

Quick start

Install from PyPI (recommended)

pipx install atomno-mcp-cbr-rates
atomno-mcp-cbr-rates  # starts the MCP server over stdio

Or with uv:

uv tool install atomno-mcp-cbr-rates

Install from source

git clone https://github.com/atomno-mcp/mcp-cbr-rates.git
cd mcp-cbr-rates
pip install -e .
atomno-mcp-cbr-rates  # starts the MCP server over stdio

Use with Cursor

Add the following to .cursor/mcp.json (or your global ~/.cursor/mcp.json):

{
  "mcpServers": {
    "cbr-rates": {
      "command": "atomno-mcp-cbr-rates"
    }
  }
}

Use with Claude Desktop

Add to claude_desktop_config.json:

{
  "mcpServers": {
    "cbr-rates": {
      "command": "atomno-mcp-cbr-rates"
    }
  }
}

On Windows the config lives at %APPDATA%\Claude\claude_desktop_config.json; on macOS at ~/Library/Application Support/Claude/claude_desktop_config.json.

Use with Claude Code

claude mcp add cbr-rates -- atomno-mcp-cbr-rates

Tools

Examples in plain English:

"What was the official EUR rate on April 25, 2024?" Tool: get_rate(char_code="EUR", on_date="2024-04-25")

"Plot the daily USD-RUB rate over the last 90 days." Tool: history_rates(char_code="USD", date_from=..., date_to=...)

"Give me the latest key rate, USD/EUR/CNY, and inflation in one go." Tool: statistics()

The history_rates window is capped at 366 days; for longer periods, call the tool repeatedly.

Configuration

All settings are optional and read from environment variables:

Legacy CBR_* names are still accepted for compatibility, but new configs should use MCP_CBR_*.

There are no API keys to configure — all CBR endpoints used here are public.

Development

git clone https://github.com/atomno-mcp/mcp-cbr-rates.git
cd mcp-cbr-rates
python -m venv .venv && source .venv/bin/activate  # or .\.venv\Scripts\activate on Windows
pip install -e ".[dev]"
pytest --cov=src/mcp_cbr_rates

Layout:

apps/mcp-cbr-rates/
├── src/mcp_cbr_rates/
│   ├── server.py        # FastMCP entry point, tool registration
│   ├── tools.py         # high-level async tools with caching
│   ├── client.py        # httpx wrapper around CBR XML / SOAP / HTML endpoints
│   ├── schemas.py       # Pydantic v2 models for inputs & outputs
│   ├── cache.py         # async TTL cache
│   ├── currency_codes.py # static ISO → CBR id map (with dynamic fallback)
│   └── errors.py        # typed exception hierarchy
└── tests/               # respx-mocked unit tests + fixtures

Data sources

• https://www.cbr.ru/scripts/XML_daily.asp — daily currency quotes.
• https://www.cbr.ru/scripts/XML_dynamic.asp — historical currency series.
• https://www.cbr.ru/scripts/XML_valFull.asp — currency code lookup.
• https://www.cbr.ru/DailyInfoWebServ/DailyInfo.asmx — SOAP service for the CBR key rate.
• https://www.cbr.ru/hd_base/infl/ — monthly year-over-year inflation table.

All endpoints are read-only and free of charge.

Disclaimer

This project is not affiliated with the Bank of Russia in any way. It is an unofficial, best-effort wrapper around publicly available data. Use at your own risk; the authors disclaim any responsibility for the freshness, accuracy or applicability of the data delivered through this server.

If CBR's HTML or XML schemas change, individual tools may stop working until this package is updated. Please open an issue if you notice a regression.

License

MIT — see LICENSE.