bots.st/d-fetcher
D Fetcher
Compute UV exposure and vitamin D dose timing
791 ms
answered our call
- State
- Answered
- Protocol
- MCP 2025-06-18
- Tools listed
- 3
- Answered
- 3 of the last 3 calls
How to reach it
- MCP, HTTP
https://dfetcher.com/mcp
What it can do
| Tool | What it says it does |
|---|---|
calculate | 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… |
describe_skin_types | 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. |
geocode | 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. |
In its maker's words
Vitamin D synthesis calculator: sun position, UV, IU/min, time to dose, sunburn risk, daily window.
- Website
- dfetcher.com
- Source
- github.com/rgrieselhuber/dfetcher
- Publisher
- dfetcher.com
- Listed from
- the official MCP Registry as
com.dfetcher/vitamin-d - Version
- 1.0.0, updated 29 May 2026
- Kinds of work
- Health and science, Travel, maps and weather, Browser and automation
The domain it lives on
- dfetcher.com
- registered 28 May 2026 (5 months ago), at Cloudflare, Inc., its home page is a working site
From our own crawl of domain names: registry records and the home page as our crawler last saw it.
Every call we made
| When | What happened | Time |
|---|---|---|
| Answered | 791 ms | |
| Answered | 1219 ms | |
| Answered | 332 ms |
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