D Fetcher is an MCP server with 3 tools an agent can call, among them calculate, describe_skin_types, geocode. It answers at https://dfetcher.com/mcp over streamable HTTP, and it listed its tools to an anonymous client, so no sign-in was needed for that. Our probes reached it 10 of 10 times since 4 September 2026; the last check, on 18 October 2026, succeeded.
Vitamin D synthesis calculator: sun position, UV, IU/min, time to dose, sunburn risk, daily window.
Description as the publisher wrote it.
| Tool | What 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 l Inputs: lat, lon, skin, area, scalp, age |
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 Inputs: query |
Every block below points at https://dfetcher.com/mcp. Pick your client and copy.
claude mcp add --transport http d-fetcher https://dfetcher.com/mcp
{
"mcpServers": {
"d-fetcher": {
"command": "npx",
"args": ["-y", "mcp-remote", "https://dfetcher.com/mcp"]
}
}
}{
"mcpServers": {
"d-fetcher": {
"url": "https://dfetcher.com/mcp"
}
}
}{
"servers": {
"d-fetcher": {
"type": "http",
"url": "https://dfetcher.com/mcp"
}
}
}{
"context_servers": {
"d-fetcher": {
"url": "https://dfetcher.com/mcp"
}
}
}{
"mcpServers": {
"d-fetcher": {
"serverUrl": "https://dfetcher.com/mcp"
}
}
}{
"mcpServers": {
"d-fetcher": {
"url": "https://dfetcher.com/mcp"
}
}
}name: D Fetcher
version: 0.0.1
schema: v1
mcpServers:
- name: D Fetcher
type: streamable-http
url: https://dfetcher.com/mcp{
"mcpServers": {
"d-fetcher": {
"httpUrl": "https://dfetcher.com/mcp"
}
}
}{
"mcpServers": {
"d-fetcher": {
"type": "http",
"url": "https://dfetcher.com/mcp"
}
}
}{
"mcpServers": {
"d-fetcher": {
"url": "https://dfetcher.com/mcp"
}
}
}goose://extension?url=https%3A%2F%2Fdfetcher.com%2Fmcp&type=streamable_http&id=d-fetcher&name=D%20Fetcher
It answered our last check on 18 October 2026 in 164 ms. Over 10 checks since 4 September 2026 it answered 10. Status here comes from Neuronto's own probes, not from the publisher.
Yes. It is published by dfetcher.com and served from dfetcher.com, the vendor's own domain: https://dfetcher.com/mcp.
3, as returned by the server's own tools/list on 10 September 2026: calculate, describe_skin_types, geocode.
It answered our last check on 18 October 2026 in 164 ms. Over 10 checks since 4 September 2026 it answered 10.
Put the server under mcpServers in ~/.cursor/mcp.json with the URL https://dfetcher.com/mcp. The exact JSON is above, with the same setup for Claude Code, Claude Desktop, VS Code, Windsurf, Zed, Gemini CLI and the rest.
It listed its tools to an anonymous client, so reading the tool list needs no key. Individual tools can still ask for credentials in their own inputs.
Publisher: com.dfetcher. Endpoint host: dfetcher.com. ARD identifier: urn:air:com.dfetcher:mcp:vitamin-d.
First indexed 31 August 2026. The tools are exactly what the server returned; nothing on this page
is inferred from its name. Ranking in Neuronto search is never for sale.