KosmoKrator

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ExchangeRate MCP Integration for LangGraph

Connect ExchangeRate to LangGraph through the local KosmoKrator MCP gateway with scoped tools, credentials, and write policy.

5 functions 5 read 0 write No credentials auth
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Connect ExchangeRate to LangGraph

Run KosmoKrator integration calls from LangGraph nodes while preserving local credentials and permissions.

Use a graph node that calls the KosmoKrator CLI for deterministic steps or an MCP client for dynamic tool selection. The gateway is local, scoped to this integration, and starts with --write=deny so LangGraph can inspect read-capable tools without receiving write access by default.

ExchangeRate MCP Config for LangGraph

Headless CLI calls fit repeatable graph edges; MCP fits exploratory agent nodes.

{
  "mcpServers": {
    "kosmokrator-exchangerate": {
      "type": "stdio",
      "command": "kosmo",
      "args": [
        "mcp:serve",
        "--integration=exchangerate",
        "--write=deny"
      ]
    }
  }
}

Run the Gateway Manually

kosmokrator mcp:serve --integration=exchangerate --write=deny

Why Use KosmoKrator Here

Scoped tools

Expose only ExchangeRate instead of a broad multi-service tool list.

Local credentials

Reuse credentials already configured for the KosmoKrator CLI and Lua runtime.

Write policy

Start read-only, then opt into ask or allow for trusted workspaces.

ExchangeRate Tools Visible to LangGraph

LangGraph sees stable MCP tool names generated from the ExchangeRate integration catalog.

MCP toolSource functionTypeDescription
integration__exchangerate__exchangerate_list_currencies exchangerate.exchangerate_list_currencies Read List all available currencies (fiat, crypto, precious metals, stablecoins). Supports 340+ assets. Optionally filter by name or code.
integration__exchangerate__exchangerate_popular_currencies exchangerate.exchangerate_popular_currencies Read Show the most commonly used currency codes (no API call needed). Use these codes directly with exchangerate_convert_currency. Popular codes: {$popular}
integration__exchangerate__exchangerate_convert_currency exchangerate.exchangerate_convert_currency Read Convert an amount from one currency to another. Supports 340 fiat currencies, cryptocurrencies, and precious metals. Common codes: usd, eur, gbp, jpy, cny, chf, cad, aud, btc, eth, sol, xau, xag.
integration__exchangerate__exchangerate_rates exchangerate.exchangerate_rates Read Get all exchange rates for a base currency. Optionally filter to specific target currencies. Supports 340 fiat currencies, cryptocurrencies, and precious metals.
integration__exchangerate__exchangerate_history exchangerate.exchangerate_history Read Compare a currency pair across multiple dates to see rate changes over time. Returns each date's rate and the overall change.

Related ExchangeRate Pages

ExchangeRate CLIUse direct JSON commands instead of MCP discovery. ExchangeRate MCPFull gateway reference and MCP tool names. KosmoKrator for LangGraphClient-level gateway setup.