reference data mcp server for Claude.ai

io.github.cyanheads/reference-data-mcp-server

Countries, timezones, elements, constants, HTTP status codes, unit conversion, and MIME type lookup.

client:Claude.ai transport:streamable-http runtime:npm tools:10

Install reference data mcp server in Claude.ai

Settings → Connectors → Add custom connector

https://reference-data.caseyjhand.com/mcp

Claude on the web takes a remote URL and completes OAuth in the browser. For a packaged server use Claude Desktop or Claude Code instead. Claude.ai docs

What Claude.ai can do once it is connected

ref_geo_lookup
ref_geo_search
ref_timezone_lookup
ref_timezone_convert
ref_element_lookup
ref_element_search
ref_constant_lookup
ref_unit_convert
ref_http_status
ref_mime_type

reference data mcp server in other clients

Claude Code
Claude Desktop
Cursor
VS Code
Zed
Windsurf
Cline
Gemini CLI
Grok
ChatGPT
LangChain

reference data mcp server MCP server