# D Fetcher MCP server

Vitamin D synthesis calculator: sun position, UV, IU/min, time to dose, sunburn risk, daily window.

## Links
- Registry page: https://www.getdrio.com/mcp/com-dfetcher-vitamin-d
- Repository: https://github.com/rgrieselhuber/dfetcher
- Website: https://dfetcher.com

## Install
- Endpoint: https://dfetcher.com/mcp
- Auth: Not captured

## Setup notes
- Remote endpoint: https://dfetcher.com/mcp

## Tools
- calculate (Vitamin D synthesis calculator) - Calculate vitamin D synthesis at a given location and time. Returns sun position, UV index, IU/min, minutes to reach the target dose, MED (sunburn threshold), the peak window, and optional 15-min day / monthly year curves. UV index uses a live satellite-driven forecast where available, with a clear-sky fallback. Endpoint: https://dfetcher.com/mcp
- geocode (Resolve a place to lat/lon) - Turn a place name, postal code, or "code, CC" string into { lat, lon, label }. Auto-detects US/CA/GB/NL/JP/BR postal patterns; ambiguous digit-only codes default to US unless the caller appends a country code (e.g. "10115, DE"). Falls back to Open-Meteo place-name search for everything else. Endpoint: https://dfetcher.com/mcp
- describe_skin_types (Fitzpatrick skin type reference) - Returns the six Fitzpatrick skin types with sun-reactivity behavior and descriptive ancestry hints. Call this when the user's skin type is unknown so you can pick the closest match before calling calculate. Endpoint: https://dfetcher.com/mcp

## Resources
Not captured

## Prompts
Not captured

## Metadata
- Owner: com.dfetcher
- Version: 1.0.0
- Runtime: Streamable Http
- Transports: HTTP
- License: Not captured
- Language: Not captured
- Stars: Not captured
- Updated: May 29, 2026
- Source: https://registry.modelcontextprotocol.io