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D Fetcher

by com.dfetcher
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Server Details

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

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Status
Healthy
Uptime
100.0% over the last 24 hours
Last Tested
Transport
Streamable HTTP · MCP 2025-06-18
URL
ChatGPT
–
Claude
–

TDQS

A4.5/5.0

Scored across 3 tools

Disambiguation5/5

Each tool has a distinct role: calculate is the core computation, describe_skin_types provides input for skin type, and geocode converts location to coordinates. There is no overlap or ambiguity between them.

Naming Consistency4/5

Tool names are imperative verbs in lowercase, with snake_case for multi-word names (describe_skin_types). While 'calculate' and 'geocode' are single verbs without a noun, the pattern is consistent enough and easy to predict.

Tool Count5/5

Three tools is a well-scoped size for a focused vitamin D calculator server. Each tool is necessary and there are no redundant additions.

Completeness5/5

The server covers the full user journey: geocoding location, determining skin type, and calculating vitamin D synthesis with detailed outputs. No obvious dead ends or missing operations within the stated purpose.

Available Tools

3 tools
calculateVitamin D synthesis calculatorAInspect

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.

Inputs: lat (required), lon (required), age, day, +6 more.

describe_skin_typesFitzpatrick skin type referenceAInspect

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.

Inputs: no named parameters.

geocodeResolve a place to lat/lonAInspect

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.

Inputs: query (required).

Tool Schema Changelog

Recent tool additions, removals, and schema changes observed during successful MCP inspections.

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