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8 clients · secrets stay placeholders

JSON (mcpServers)Claude CodeCodexOpenCodeCursorVS CodeGemini CLIGoose

{
  "mcpServers": {
    "vitamin-d": {
      "type": "http",
      "url": "https://dfetcher.com/mcp"
    }
  }
}

claude mcp add --transport http vitamin-d https://dfetcher.com/mcp

[mcp_servers.vitamin-d]
url = "https://dfetcher.com/mcp"

{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "vitamin-d": {
      "type": "remote",
      "url": "https://dfetcher.com/mcp",
      "enabled": true
    }
  }
}

{
  "mcpServers": {
    "vitamin-d": {
      "type": "http",
      "url": "https://dfetcher.com/mcp"
    }
  },
  "deeplink": "cursor://anysphere.cursor-deeplink/mcp/install?name=vitamin-d&config=eyJ0eXBlIjoiaHR0cCIsInVybCI6Imh0dHBzOi8vZGZldGNoZXIuY29tL21jcCJ9"
}

{
  "servers": {
    "vitamin-d": {
      "type": "http",
      "url": "https://dfetcher.com/mcp"
    }
  }
}

{
  "mcpServers": {
    "vitamin-d": {
      "httpUrl": "https://dfetcher.com/mcp"
    }
  }
}

extensions:
  "vitamin-d":
    enabled: true
    name: "vitamin-d"
    type: streamable_http
    uri: "https://dfetcher.com/mcp"
    timeout: 300

Quality 79 / 100good

protocol75 · weight 25

warn
protocol.modernnewest supported version is 2025-06-18; 2026-07-28 not supported, older versions are deprecated until 2027-07-28
n/a
protocol.statelessonly applies to 2026-07-28 servers
pass
protocol.transportstreamable HTTP
n/a
protocol.list_ttlonly applies to 2026-07-28 servers

authorizationn/a · weight 15

n/a
auth.prm, auth.as_metadata, auth.cimdno remote uses OAuth
n/a
auth.secret_in_urlno templated URL

tool hygiene71 · weight 30

pass
tools.descriptionsevery tool has a description
pass
tools.description_lengthdescriptions are concise
pass
tools.schemasevery tool has an object input schema
fail
tools.annotationsno tool declares readOnlyHint or destructiveHint, so clients cannot tell safe calls from risky ones
fail
tools.directory_hintsno tool declares all four of readOnlyHint, destructiveHint, idempotentHint and openWorldHint; missing: calculate (readOnlyHint, destructiveHint, idempotentHint, openWorldHint); geocode (readOnlyHint, destructiveHint, idempotentHint, openWorldHint); describe_skin_types (readOnlyHint, destructiveHint, idempotentHint, openWorldHint)
pass
tools.token_costabout 572 tokens to load every tool
pass
tools.api_dumptools are not a one-to-one API dump

stability100 · weight 15

pass
stability.changesno tool changes in 30 days
pass
stability.rug_pullno tool changed its meaning under the same name

dependenciesn/a · weight 15

n/a
deps.known_vulns, deps.mcp_sdk_version, deps.resolvableno npm or PyPI package

3 tools, about 572 tokens to load them all · tool set aa1a31781c0c · checked 2026-10-19 10:52 UTC

Tool changes

No tool definition changes recorded. A server's first observation is its baseline; later probes record what changes.

Checks run on what our credential-free, read-only probes observe; tools are never called and no code audit is performed. How it is computed.

Trust 88 / 100

provenance85

liveness99

freshness65

hygiene100

+repository +dns-namespace +website +reachable +uptime-96% ~updated-143d-ago

Derived from observable signals (official registry feed and our own credential-free probes); no code audit performed. How it is computed.

Endpoints

remote	auth	reachable	uptime 30d	p50	protocol	last ok
`https://dfetcher.com/mcp` streamable-http	none	yes	96%	225 ms	2025-06-18	2026-10-19

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 / monthly year curves. UV index uses a live satellite-driven forecast where available, with a clear-sky fallback.
`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.

Schemas: list_tools.

Similar MCP servers

Official server.json

{
  "name": "com.dfetcher/vitamin-d",
  "title": "D Fetcher",
  "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
  "remotes": [
    {
      "url": "https://dfetcher.com/mcp",
      "type": "streamable-http"
    }
  ],
  "version": "1.0.0",
  "repository": {
    "url": "https://github.com/rgrieselhuber/dfetcher",
    "source": "github"
  },
  "websiteUrl": "https://dfetcher.com",
  "description": "Vitamin D synthesis calculator: sun position, UV, IU/min, time to dose, sunburn risk, daily window."
}