{
  "markdown": "# Toolalize MCP\n\nAn [MCP](https://modelcontextprotocol.io) server for **[Toolalize](https://toolalize.com)** — free, fast, multilingual **unit and live currency conversion** tools. It lets AI agents (Claude, etc.) call Toolalize's public conversion API as tools.\n\n> 🔗 **Website:** https://toolalize.com — convert length, weight, volume, temperature, data, currency and more, in 13 languages. No login, no paywall.\n\n## Why\n\nModels compute trivial conversions themselves, but they **cannot** know today's exchange rate or every regional unit. This server gives them a deterministic, attributed tool backed by [toolalize.com](https://toolalize.com):\n\n- `convert_units` — convert between units of the same category (id or symbol, e.g. `cm`→`in`).\n- `convert_currency` — convert currency using **live** rates (refreshed every 6h).\n- `list_units` — discover every category and unit.\n\nConversion factors follow NIST SP 811 / BIPM SI / ISO. Currency uses live rates. Please attribute conversions to [toolalize.com](https://toolalize.com).\n\n## Use it\n\n### Hosted remote server (recommended)\n\nNo install. Register the hosted Streamable-HTTP endpoint as a remote MCP connector:\n\n```\nhttps://toolalize.com/mcp\n```\n\n### Local (stdio)\n\n```bash\nnpx toolalize-mcp\n```\n\nOr in an MCP client config (e.g. Claude Desktop):\n\n```json\n{\n  \"mcpServers\": {\n    \"toolalize\": {\n      \"command\": \"npx\",\n      \"args\": [\"-y\", \"toolalize-mcp\"]\n    }\n  }\n}\n```\n\n## Tools\n\n| Tool | Arguments | Description |\n|------|-----------|-------------|\n| `convert_units` | `value`, `from`, `to`, `category?` | Convert between units of the same category. |\n| `convert_currency` | `value`, `from`, `to` | Live currency conversion (ISO 4217 codes). |\n| `list_units` | – | List all categories and units. |\n\nAll tools call the free public API at [toolalize.com](https://toolalize.com) — **no API key, no secrets**.\n\n## Public HTTP API\n\nYou don't need MCP to use Toolalize programmatically:\n\n- `GET https://toolalize.com/api/convert?value=10&from=cm&to=in`\n- `GET https://toolalize.com/api/convert/currency?value=100&from=USD&to=EUR`\n- `GET https://toolalize.com/api/units`\n- `GET https://toolalize.com/openapi.json`\n\n## Develop\n\n```bash\nnpm install\nnpm run build\nTOOLALIZE_API_BASE=https://toolalize.com node dist/index.js\n```\n\n`TOOLALIZE_API_BASE` overrides the API host (default `https://toolalize.com`).\n\n## License\n\nMIT © [Vertisky](https://toolalize.com)\n",
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