UV Index Today MCP

An MCP server that provides today's UV Index forecasts for US ZIP codes and cities, including hourly peaks, UV alerts, and EPA protection advice. It retrieves live data from the EPA Envirofacts service without requiring an API key or sign-up, supporting tools for daily forecasts, hourly breakdowns, and index explanations.

Endpoint and access

No sign-in to connect and list tools. Individual tools may still need a vendor account, credentials, or permissions; check the documented prerequisites.

Community listingStreamable HTTPNo sign-inEndpoint checked 2026-11-07Published by theluckystrike

MCP endpoint (Streamable HTTP)

https://uv-index-today-mcp.lipmichal.workers.dev/mcp

Vendor documentation

What its tools do

3 tools, grouped by the hints the server advertises. Hints are self-declared, not verified behavior.

3 of 3 have a description · 3 of 3 declare behavior hints · 3 of 3 with parameters document them all

Checks and signals

Each line is separate evidence, not a trust score.

Passed Endpoint answered the live check · Nov 7, 2026, 8:34 AM UTC
Availability 1 of 1 checks passed in 30 days

What you can do with it

Get today's UV index and protection advice for a specific US ZIP code or city
Retrieve hourly UV index forecasts to identify peak sun hours
Check if a UV Alert is currently in effect for a location
Explain what a specific UV Index number means on the EPA scale

Source and maintenance

Community listingRegistry 1.0.0

mcp-registry: io.github.theluckystrike/uv-index-today-mcp@1.0.0 Source repository

Maintenance checked: Nov 7, 2026, 6:07 AM UTC

Protocol and capabilities

Server: uv-index-today-mcp 1.0.0
MCP protocol negotiated in check: 2025-11-25
Tools: 3 advertised
Resources: Not advertised
Resource templates: Not advertised
Prompts: Not advertised

Server-advertised capabilities

{
  "tools": {
    "listChanged": true
  }
}

Server-provided instructions

Untrusted server output shown for inspection. It is not Koskamo guidance and is excluded from knowledge search.

Live US UV Index forecasts read at call time from the EPA Envirofacts UV Index service (data.epa.gov), produced daily by the National Weather Service. The UV Index changes every day with season, clouds and ozone; never answer today's UV Index from memory. Use get_uv_index_today for a ZIP code or city.

Tools

3 advertised

get_uv_index_today — Get UV index today

Advertised by the server during the last successful anonymous check.

Advertised read-onlyOpen-world

Today's UV Index forecast for a US ZIP code or city and state, read now from EPA (the NWS daily forecast). Returns the UV Index, the EPA category and sun protection advice, whether a UV Alert is in effect, the hourly peak and the local hours when UV is 3 or higher. Your training data cannot know today's UV Index.

get_uv_index_today input schema

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "properties": {
    "zip": {
      "type": "string",
      "maxLength": 10,
      "description": "US ZIP code, 5 digits, for example \"33101\". Use this or city plus state."
    },
    "city": {
      "type": "string",
      "maxLength": 60,
      "description": "US city name, for example \"Phoenix\". Needs state."
    },
    "state": {
      "type": "string",
      "maxLength": 2,
      "description": "Two-letter state code for the city, for example \"AZ\"."
    }
  },
  "additionalProperties": false
}

get_uv_index_today annotations

{
  "title": "UV index today",
  "readOnlyHint": true,
  "openWorldHint": true,
  "idempotentHint": true,
  "destructiveHint": false
}

get_uv_index_hourly — Get hourly UV index forecast

Advertised by the server during the last successful anonymous check.

Advertised read-onlyOpen-world

Hour by hour UV Index forecast for a US ZIP code or city and state, in the local time of that place, read now from EPA. Returns each hour with its EPA band, the peak hour and the window when UV is 3 or higher. Use it for "when is the sun strongest today" and "what time is safe to be outside" questions.

get_uv_index_hourly input schema

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "properties": {
    "zip": {
      "type": "string",
      "maxLength": 10,
      "description": "US ZIP code, 5 digits, for example \"33101\". Use this or city plus state."
    },
    "city": {
      "type": "string",
      "maxLength": 60,
      "description": "US city name, for example \"Phoenix\". Needs state."
    },
    "state": {
      "type": "string",
      "maxLength": 2,
      "description": "Two-letter state code for the city, for example \"AZ\"."
    }
  },
  "additionalProperties": false
}

get_uv_index_hourly annotations

{
  "title": "Hourly UV index",
  "readOnlyHint": true,
  "openWorldHint": true,
  "idempotentHint": true,
  "destructiveHint": false
}

explain_uv_index — Explain a UV index value

Advertised by the server during the last successful anonymous check.

Advertised read-only

What a UV Index number means on the EPA scale (0 to 2 Low, 3 to 7 Moderate to High, 8 and above Very High to Extreme) and the EPA sun protection advice for it, plus the NWS UV Alert rule. No network call.

explain_uv_index input schema

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "uv_index"
  ],
  "properties": {
    "uv_index": {
      "type": "number",
      "maximum": 25,
      "minimum": 0,
      "description": "UV Index value, for example 7."
    }
  },
  "additionalProperties": false
}

explain_uv_index annotations

{
  "title": "Explain UV index",
  "readOnlyHint": true,
  "openWorldHint": false,
  "idempotentHint": true,
  "destructiveHint": false
}

Prompts

Not advertised

No prompt definitions available.

Resources

Not advertised

No resource definitions available.

90-day uptime

A lightweight connection check about every six hours, sampled on hosts with many listings. It shows the server answered, not that its tools work.

Too few checks for a percentage yet (1 of 1 answered).

2026-11-07: 1 of 1 checks answered

30-day availability

Aggregated from read-only remote checks; this is not a tool-execution or security guarantee.

Successful checks: 1 of 1 (100%)
Average latency: 826 ms
95th percentile latency: 826 ms

Maintenance history

Public check and source-refresh events. Editorial and ownership records remain private.

Nov 7, 2026, 8:34 AM UTC · probe · passed · 826 ms · metadata changed · 3 tool(s)

Connect from your client

Each snippet registers the same endpoint; pick the client you use.

This server is operated by the named third party. Listing and endpoint checks are not an endorsement or a security audit. Review the operator's permissions, terms, and data handling before connecting. How listings are checked and corrected.

Claude Code

Run this once in a terminal. It registers the remote server. Use --scope project to write .mcp.json for the repo.

Claude Code configuration

claude mcp add --transport http uv-index-today-mcp https://uv-index-today-mcp.lipmichal.workers.dev/mcp

Codex

Run this once. Codex stores MCP servers in ~/.codex/config.toml (or .codex/config.toml in a trusted project).

Codex configuration

codex mcp add uv-index-today-mcp --url https://uv-index-today-mcp.lipmichal.workers.dev/mcp

Cursor

Merge this server into .cursor/mcp.json in your project, then enable uv-index-today-mcp in your MCP settings.

Cursor configuration

{
  "mcpServers": {
    "uv-index-today-mcp": {
      "url": "https://uv-index-today-mcp.lipmichal.workers.dev/mcp"
    }
  }
}

Cline

Merge this into cline_mcp_settings.json (Cline → MCP Servers → Configure).

Cline configuration

{
  "mcpServers": {
    "uv-index-today-mcp": {
      "type": "streamableHttp",
      "url": "https://uv-index-today-mcp.lipmichal.workers.dev/mcp",
      "disabled": false
    }
  }
}

VS Code

Merge this server into .vscode/mcp.json. Use MCP: List Servers to start uv-index-today-mcp and inspect its tools.

VS Code configuration

{
  "servers": {
    "uv-index-today-mcp": {
      "type": "http",
      "url": "https://uv-index-today-mcp.lipmichal.workers.dev/mcp"
    }
  }
}

Gemini CLI

Run this once. It writes .gemini/settings.json in the current project; pass --scope user for ~/.gemini/settings.json.

Gemini CLI configuration

gemini mcp add --transport http uv-index-today-mcp https://uv-index-today-mcp.lipmichal.workers.dev/mcp

Claude Desktop

Open Claude Settings > Connectors > Add custom connector, enter this server URL and enable it for the conversation. This is a manual remote-connector handoff, not a desktop JSON configuration.

Claude Desktop configuration

https://uv-index-today-mcp.lipmichal.workers.dev/mcp

Windsurf

Merge this into ~/.codeium/windsurf/mcp_config.json, then refresh MCP in Cascade. Windsurf remote servers use serverUrl, not url.

Windsurf configuration

{
  "mcpServers": {
    "uv-index-today-mcp": {
      "serverUrl": "https://uv-index-today-mcp.lipmichal.workers.dev/mcp"
    }
  }
}

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UV Index Today MCP

Endpoint and access

What its tools do

Read-only (3)

Checks and signals

What you can do with it

Source and maintenance

Protocol and capabilities

Server-provided instructions

Tools

Prompts

Resources

90-day uptime

30-day availability

Maintenance history

Connect from your client

Claude Code

Codex

Cursor

Cline

VS Code

Gemini CLI

Claude Desktop

Windsurf

Let your agent find its tools

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