About D Fetcher
Vitamin D synthesis calculator: sun position, UV, IU/min, time to dose, sunburn risk, daily window
Configuration
Remote servers need no local install. Pick your client, then copy the config or install in one click.
https://dfetcher.com/mcpclaude mcp add --transport http com-dfetcher-vitamin-d https://dfetcher.com/mcp{"mcpServers":{"com-dfetcher-vitamin-d":{"type":"http","url":"https://dfetcher.com/mcp"}}}Open in Cursor{"servers":{"com-dfetcher-vitamin-d":{"type":"http","url":"https://dfetcher.com/mcp"}}}Open in VS Code{"mcpServers":{"com-dfetcher-vitamin-d":{"type":"http","url":"https://dfetcher.com/mcp"}}}{"mcpServers":{"com-dfetcher-vitamin-d":{"serverUrl":"https://dfetcher.com/mcp"}}}Run commands in a terminal; paste JSON into the client’s MCP config and restart. Servers that need sign-in will prompt on first connect.
Tools
3| Parameter | Type | Required | Description |
|---|---|---|---|
| age | integer | No | Age in years (used for the age factor). |
| day | boolean | No | Include 15-min samples through the local day. |
| lat | number | Yes | Latitude in degrees. |
| lon | number | Yes | Longitude in degrees. |
| area | number | No | Exposed body fraction. 0.10 face+hands, 0.25 arms+face, 0.40 t-shirt+shorts, 0.85 near-full body. |
| date | string | No | ISO 8601 timestamp or epoch ms. Defaults to now. |
| skin | integer | No | Fitzpatrick skin type 1–6. Use describe_skin_types if unknown. |
| year | boolean | No | Include monthly solar-noon samples with cloud climatology. |
| scalp | enum | No | Scalp coverage. "bald" adds ~3.5% BSA.hair | bald |
| target | integer | No | Daily vitamin D target in IU. |
Details
The maintainer has not added details yet. Check the README in the repository.
Comments
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An open protocol that defines how AI applications connect to external tools and data in a uniform way. Clients talk to the model; MCP servers provide tools, resources and prompt templates. They exchange standard messages, so one server can be reused by many clients.