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Weather

by Thx93 · remote · no sign-in to list tools · v1.1.0 · published by GitHub user Thx93

US weather for AI agents: active NWS alerts by state, 5-period forecasts by lat/lon. Paid per call.

Changes · 1
CompareRegistry entry

3 tools: 1 change things and 2 only read.

Scanned Oct 21, 2026

No check matched anything in the tool definitions. No finding is not a safety guarantee. How the checks work.

claude mcp add --transport http weather https://agent-evidence-api.thx93.workers.dev/weather/mcp

Tools

Open a tool for its reasons and full description. Descriptions are the publisher's own words, shown as they are.

3 tools

Changes things 1Claude Code: ask
  • healthCheck that the service is up.No findings

    Why it is in this group

    • Nothing in its name or description says what it does, so it is counted as a write.
    • The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
    Description, as the server wrote it
    Check that the service is up. Costs nothing.

    Annotations the server declares

    • readOnlyHint: true
    • destructiveHint: false
    • idempotentHint: true
    • openWorldHint: true
    • title: Health
Only reads 2Claude Code: allow
  • get-alertsGet active weather alerts for a US state.No findings

    Why it is in this group

    • The name "get-alerts" says "get": a word for reading.
    Description, as the server wrote it
    Get active weather alerts for a US state. Give the two-letter state code (for example CA or NY) and get every active National Weather Service alert for it: the event type, the area it covers, its severity, what is happening, and the official instruction. US locations only. No API key and no account: discovery is free, a call costs $0.01 in USDC on Base via x402, and nothing is charged when the request returns no data. Free tools: health and tools/list.

    Annotations the server declares

    • readOnlyHint: true
    • destructiveHint: false
    • idempotentHint: true
    • openWorldHint: true
    • title: Get Weather Alerts
  • get-forecastGet the weather forecast for a point on the map.No findings

    Why it is in this group

    • The name "get-forecast" says "get": a word for reading.
    Description, as the server wrote it
    Get the weather forecast for a point on the map. Give latitude and longitude and get the next five forecast periods for it: the period name, its temperature, wind speed and direction, and the plain-language forecast. US locations only. No API key and no account: discovery is free, a call costs $0.01 in USDC on Base via x402, and nothing is charged when the request returns no data. Free tools: health and tools/list.

    Annotations the server declares

    • readOnlyHint: true
    • destructiveHint: false
    • idempotentHint: true
    • openWorldHint: true
    • title: Get Weather Forecast

This is not a safety rating, and no finding is not a safety guarantee. The groups and findings come from fixed checks of the tool definitions the server returned on the date shown, not from its code or what it does when called. How the checks work.

Install

Pinned to version 1.1.0. Values in angle brackets are yours to fill in.

claude mcp add --transport http weather https://agent-evidence-api.thx93.workers.dev/weather/mcp

Run in a terminal.

Claude Code permissions

Allow the reads, ask before a change, deny the deletes. Paste into .claude/settings.json.

.claude/settings.json
{
  "permissions": {
    "allow": [
      "mcp__weather__get-alerts",
      "mcp__weather__get-forecast"
    ],
    "ask": [
      "mcp__weather__health"
    ],
    "deny": []
  }
}

Tools that only read are allowed, tools that change things ask first, tools that delete or cancel are denied. It assumes the server is installed as weather. Review it before you use it.