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100
MCP live MCP 2025-06-18 streamable-http

D Fetcher

com.dfetcher/vitamin-d

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

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Uptime
100.0%
5 direct probes · 30d
Response
768ms
last probe
Tools
3
callable
Resources
0
readable
Prompts
0
available
Primary URL
https://dfetcher.com/mcp
Score: 100/100
Handshake verified by our own probe.
why this score
pass Answers the MCP handshake 50/50
The handshake and the list calls succeeded on the primary URL.
pass Lists tools, resources or prompts 30/30
3 tools, 0 resources, 0 prompts returned.
pass 3 or more catalogue items 10/10
3 items in total; 3 or more earns these points.
pass Describes itself 10/10
99 characters; more than 30 earns these points.

Tools · 3

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 …

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 coun…

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 calc…

How to use

Add to your Claude Desktop / Cursor / Cline MCP config:

{
  "mcpServers": {
    "d_fetcher": {
      "url": "https://dfetcher.com/mcp",
      "transport": "streamable-http"
    }
  }
}