Cnb MCP Server

by cz-agents Your server? Claim it

answering

Cnb is answering right now. Last checked moments ago. 102 installs a week from npm. It exposes 3 tools. Last commit 10 Sep 2026.

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

Installs per day peak 29 · avg 16 · +111% w/w

a month agotoday

Uptime history 47 days of history · worst day 99%

47 days agonow

100.0%

Uptime 24h

92 of 92 checks

Tools

read from the server

212 ms

Response time

average over 24h

102

Installs / week

npm and PyPI

What the code does

We read the source, 20 h ago · tools taken from the live server · rules 3dff92dd89df

Capabilities

What this server is able to do. For an MCP server this is often the job itself — a terminal server runs commands because that is what it is for. Listed so you know what you are plugging in, not as an accusation.

Page loads a third-party script www/cs/index.html:339, www/cs/onboard.html:15, www/cs/pricing.html:500 и ещё 8

  <script async defer src="https://analytics.mhai.app/script.js" data-website-id="5a96aa8b-7575-4667-8ac6-267287849cf3"></script>

Is this your server and something here is wrong? Tell us — corrections are free and do not require a plan.

This code can reach further than it looks

We found places where it runs commands, builds paths or queries from values it is given. None of that is a flaw by itself — it becomes one when the code changes, and code changes quietly between releases. We re-read it on every one.

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 0 min ago.

Claude Code Claude Desktop Codex Cursor VS Code

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

URL	Transport	State	Latency	Checked
https://cnb.cz-agents.dev/mcp	streamable-http	answering	214 ms	0 min ago

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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 212 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 212 ms on average, which is faster than 64% 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 102 times in the last week. Week over week that is +111%. 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, 6 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.