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OpenWeather を ChatGPT に接続する方法 — MCP 経由

Query OpenWeather (current weather, forecasts, air quality, geocoding) from any AI agent. 6 tools, API-key auth.

HCBy HelpCode teamUpdated 2 min read Open source on GitHub

No credit card · 7-day trial · Self-host alternative available

MCP connector

OpenWeather

Query OpenWeather (current weather, forecasts, air quality, geocoding) from any AI agent. 6 tools, API-key auth.

Tools

6

Region

INTL

Category

data

Authentication

Required env vars

OPENWEATHER_API_KEY
Install in one click on Cloud

7-day free trial · No credit card

  • 7-day free trial
    No credit card required
  • GDPR & SOC 2 ready
    EU data residency, audit logs
  • Open-source on GitHub
    Source-available BSL-1.1
  • Works with ChatGPT, Claude, Gemini
    Any MCP-compatible client

No install? Use cloud.anythingmcp.com directly.

Sign in, install the OpenWeather in one click, paste the credentials, mint an MCP API key — done. No Docker, no git clone, no local server to run.

Open Cloud

💡 インストール不要? cloud.anythingmcp.com を直接利用してください。 サインインし、Connectors → OpenWeather をクリック、認証情報を貼り付け、MCP API キーを発行 — 完了です。Docker も git clone もローカルサーバーも不要。

OpenWeather + ChatGPT

Query OpenWeather (current weather, forecasts, air quality, geocoding) from any AI agent. 6 tools, API-key auth.

前提条件

完全なセットアップ手順はコネクタ自体に組み込まれています (ストアでコネクタを選択すると表示)。必要な環境変数:

OPENWEATHER_API_KEY

ステップ 1 — 認証情報を取得

This connector wraps the OpenWeather REST API (api.openweathermap.org).

Setup:

  1. Sign up at https://openweathermap.org/users/sign_up (free tier: 60 calls/min, 1M/month).
  2. Go to https://home.openweathermap.org/api_keys → copy the default key OR create a new one labelled e.g. mcp.
  3. Wait ~10 minutes — new keys take time to activate on the free tier.
  4. Set OPENWEATHER_API_KEY.

Authentication: every request takes appid=${OPENWEATHER_API_KEY} as a query string. The adapter injects it automatically — never include it in tool arguments.

…(continued in the in-app connector instructions)

ステップ 2 — アダプターをインストール

git clone https://github.com/HelpCode-ai/anythingmcp.git
cd anythingmcp && docker compose up -d

ステップ 3 — ChatGPT にコネクタを追加

ChatGPT は Connectors 機能 (Plus / Pro / Team / Enterprise プラン) で MCP サーバーをサポートします。無料プランはカスタムコネクタをサポートしません。

  1. ChatGPT → Settings → Connectors を開きます (またはコンポーザーの 🔧 アイコン → Manage connectors をクリック)。
  2. "Add custom connector" をクリック。
  3. 入力:
    • Name: OpenWeather
    • MCP server URL: https://cloud.anythingmcp.com/mcp
    • Authentication: Bearer token → MCP API キーを貼り付け
  4. Connect をクリック。

利用可能なツール

ToolWhat it does
openweather_geocode_cityTranslate a city name (optionally with state and country code) into latitude/longitude
openweather_reverse_geocodeTranslate latitude/longitude back into a list of nearby place names
openweather_current_weatherCurrent weather at given coordinates: temperature, humidity, wind, conditions, sunrise/sunset
openweather_forecast_5day5-day weather forecast at 3-hour intervals
openweather_air_pollutionCurrent air-quality index (AQI 1-5) + concentrations of CO, NO, NO2, O3, SO2, PM2
openweather_air_pollution_forecastHourly air-pollution forecast for the next ~4 days at given coordinates

FAQ

ChatGPT 無料プランはカスタム MCP Connectors で動作しますか? いいえ — Plus、Pro、Team、Enterprise が必要です。

次のステップ

Ready to ship

Your OpenWeather agent is one click away.

Install the connector, paste the key, prompt ChatGPT. Free for 7 days, no credit card.