ref_nuts — Duo Data Utilities MCP Tool
ref_nuts
(ref nuts) is one of 31 tools on the
Duo Data Utilities
MCP server. Connect the server and your client discovers it on the handshake.
by client
How to call ref_nuts from your client
- Claude Code Duo Data Utilities ref_nuts run in your project directory
- Claude Desktop Duo Data Utilities ref_nuts ~/Library/Application Support/Claude/claude_desktop_config.json
- Cursor Duo Data Utilities ref_nuts ~/.cursor/mcp.json
- VS Code Duo Data Utilities ref_nuts .vscode/mcp.json
- Zed Duo Data Utilities ref_nuts ~/.config/zed/settings.json
- Windsurf Duo Data Utilities ref_nuts ~/.codeium/windsurf/mcp_config.json
- Cline Duo Data Utilities ref_nuts ~/Library/Application Support/Code/User/globalStorage/saoudrizwan.claude-dev/settings/cline_mcp_settings.json
- Gemini CLI Duo Data Utilities ref_nuts ~/.gemini/settings.json
- Grok Duo Data Utilities ref_nuts .mcp.json (in your project root)
- ChatGPT Duo Data Utilities ref_nuts Settings → Connectors → Advanced → Developer mode
- Claude.ai Duo Data Utilities ref_nuts Settings → Connectors → Add custom connector
- LangChain Duo Data Utilities ref_nuts pip install langchain-mcp-adapters
Fastest route
claude mcp add --transport http data-utilities https://api.duoleads.com/mcpOther tools on this server
- id_national
- id_gs1
- id_security
- time_zone
- time_dst
- time_business-days
- time_rrule
- time_calendar
- text_slug
- text_transliterate
- text_unicode
- text_similarity
- code_url
- code_idn
- code_semver
- code_hash
- code_jwt
- geo_geohash
- geo_pluscode
- geo_polygon
- geo_distance
- chain_address
- chain_selector
- ref_airport
- ref_currency
- ref_country
- num_radix
- num_words
- num_stats
- num_allocate
This list was read from the server itself, by connecting to it and calling tools/list on 29 September 2026. It is what
the server actually exposes, not what its listing claims.
Mutating and Read-only are read off each tool's name, not its schema — a hint, not a guarantee. The registry stores tool names only; connect the server for its live schemas.