chain_selector — Duo Data Utilities MCP Tool
chain_selector
(chain selector) 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 chain_selector from your client
- Claude Code Duo Data Utilities chain_selector run in your project directory
- Claude Desktop Duo Data Utilities chain_selector ~/Library/Application Support/Claude/claude_desktop_config.json
- Cursor Duo Data Utilities chain_selector ~/.cursor/mcp.json
- VS Code Duo Data Utilities chain_selector .vscode/mcp.json
- Zed Duo Data Utilities chain_selector ~/.config/zed/settings.json
- Windsurf Duo Data Utilities chain_selector ~/.codeium/windsurf/mcp_config.json
- Cline Duo Data Utilities chain_selector ~/Library/Application Support/Code/User/globalStorage/saoudrizwan.claude-dev/settings/cline_mcp_settings.json
- Gemini CLI Duo Data Utilities chain_selector ~/.gemini/settings.json
- Grok Duo Data Utilities chain_selector .mcp.json (in your project root)
- ChatGPT Duo Data Utilities chain_selector Settings → Connectors → Advanced → Developer mode
- Claude.ai Duo Data Utilities chain_selector Settings → Connectors → Add custom connector
- LangChain Duo Data Utilities chain_selector 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
- ref_nuts
- 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.