mcpbeat

Cnb MCP Server

dev.cz-agents/cnb
answering

Cnb is answering right now. Last checked 1 min ago. 98 installs a week from npm. It exposes 3 tools. Last commit 2 Aug 2026.

Official ČNB exchange rates — daily & historical CZK vs EUR, USD, 30+ currencies. For accounting.

Installs per day peak 33 · avg 9 · +29% w/w
a month agotoday
Uptime history 39 hours of history
39 hours agonow
100.0%
Uptime 24h
92 of 92 checks
3
Tools
read from the server
189 ms
Response time
average over 24h
98
Installs / week
npm and PyPI

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 1 min ago.

run in your terminal
claude mcp add cnb --transport http https://cnb.cz-agents.dev/mcp
~/Library/Application Support/Claude/claude_desktop_config.json
{
  "mcpServers": {
    "cnb": {
      "url": "https://cnb.cz-agents.dev/mcp"
    }
  }
}
~/.codex/config.toml
[mcp_servers.cnb]
url = "https://cnb.cz-agents.dev/mcp"
.cursor/mcp.json
{
  "mcpServers": {
    "cnb": {
      "url": "https://cnb.cz-agents.dev/mcp"
    }
  }
}
.vscode/mcp.json
{
  "mcpServers": {
    "cnb": {
      "url": "https://cnb.cz-agents.dev/mcp"
    }
  }
}

Available tools 3

Read directly from the server with tools/list, grouped by what they act on. If a tool disappears, we record the date.

convert
convert
Convert an amount between two currencies using official ČNB rates. E.g., convert 100 EUR to CZK, or 50 USD to GBP (goes via CZK cross-rate). Optional `date` for historical conversion.
rate
get_rate
Quick single-currency lookup. Returns just the CZK rate for one currency (or all rates if no code given).
rates
get_rates
Get official CZK exchange rates published by ČNB. Returns all currencies from the daily sheet (~31 majors). Optional `date` parameter (YYYY-MM-DD) for historical rates; otherwise returns latest.

Endpoints

URLTransportStateLatencyChecked
https://cnb.cz-agents.dev/mcp streamable-http answering 190 ms 1 min ago

Cnb — questions

Answers built from our own checks of this server.

What can Cnb do?
It exposes 3 tools, read directly from the server on our last check. Among them: convert, get_rate, get_rates. The full list with descriptions is on this page — we take it from the server itself via tools/list, not from a README. How MCP servers expose tools in the first place →
Is Cnb working right now?
We send a real MCP handshake every 15 minutes. Over the last 24 hours 92 of 92 checks got a reply (100.0%), average response time 189 ms. The bar chart above shows every period we have measured.
How do I connect Cnb?
Copy the ready config from this page — we generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each with the file path that client actually reads. It is a remote server, so there is nothing to install — the client connects to the address.
Does Cnb need an API key?
No. Cnb completed a full MCP handshake with us as an anonymous client and listed its tools without asking for anything. All 3 of them are readable on this page. This is what we observed, not what the docs claim.
How fast is Cnb?
It answers our handshake in 189 ms on average, which is faster than 65% of all working MCP servers we measure. The comparison comes from our own checks across the whole registry, every 15 minutes.
How many people use Cnb?
The npm package @czagents/cnb was installed 98 times in the last week. Week over week that is +29%. We show installs rather than GitHub stars on purpose: a star is a bookmark, an install is someone actually running it.
Is Cnb open source?
Yes — it is published under the MIT licence, written in TypeScript, 4 stars on GitHub and 2 open issues. The source link is on this page, so you can read exactly what it does with your data before you connect it.