How to integrate Weathermap MCP with Atomic Agent

Connect Atomic Agent to Weathermap MCP. Show current weather for paris, france, give me tomorrow’s forecast in tokyo, and more using natural language, with authentication handled for you.

Weathermap logoWeathermap
No Auth

Weathermap is a visual weather data and forecasting platform. It helps users understand climate patterns and track severe weather conditions effectively.

2 Tools

Introduction

Atomic Agent is an open-source AI agent that runs on your machine and supports local models through llama.cpp. Connect it to 1,500+ apps through Composio, including Weathermap.

This guide uses Atomic Agent's built-in Composio integration. You need Atomic Agent v0.5.6 or later, your own Composio API key, and a Weathermap account. See the Atomic Agent documentation for installation instructions.

Also integrate Weathermap with

How Atomic Agent connects to Weathermap

Atomic Agent connects to Composio's Tool Router over Streamable HTTP MCP. It discovers the tools needed for your request, and Composio handles account authentication.

Execution and account-connection tools follow Atomic Agent's configured approval policy. Review any approval prompt before allowing an action on your connected account.

Connect Weathermap to Atomic Agent

  1. Sign up or sign in to the Composio dashboard. Copy your API key.
  2. In Atomic Agent, open the Integrations tab and select Composio. Select API key, press e, paste the key, and press Enter. The tools become available immediately, without a restart.
  3. Ask Atomic Agent to do something in Weathermap. It searches Composio for the right tool.
  4. On first use, open the sign-in link returned in the chat. Connect your Weathermap account, then return to Atomic Agent to continue.

Headless setup

Add the following line to ~/.atomic-agent/.env, replacing YOUR_COMPOSIO_API_KEY with your key. Start Atomic Agent after saving the file.

bash
COMPOSIO_API_KEY=YOUR_COMPOSIO_API_KEY

What is the Weathermap MCP server, and what's possible with it?

The Weathermap MCP server is an implementation of the Model Context Protocol that connects your AI agent and assistants like Claude, Cursor, etc directly to visual weather data and forecasts. It provides structured and secure access to real-time and forecasted weather information, so your agent can perform actions like retrieving current conditions, visualizing climate trends, tracking severe weather, and generating weather maps on your behalf.

  • Current weather lookups: Instantly ask your agent to fetch up-to-date weather conditions for any city or geographic location worldwide.
  • Forecast generation: Let your agent provide detailed weather forecasts—hourly, daily, or multi-day—for planning ahead or staying informed.
  • Severe weather tracking: Enable your agent to monitor and alert you about severe weather patterns, storms, or climate warnings in specific areas.
  • Visual weather mapping: Have your agent generate and display visual weather maps, including precipitation, temperature, and wind overlays for better situational awareness.
  • Climate data queries: Request climate trends and patterns for custom regions to support research, reporting, or travel planning.

Use Weathermap from Atomic Agent

With your account connected, ask Atomic Agent to work with Weathermap in natural language. You can connect more apps through the same Composio integration as you need them.

Visit the Atomic Agent website or inspect the Atomic Agent source code.

Troubleshooting

Why is my API key rejected?

Copy the key directly from the Composio dashboard. Atomic Agent requires ASCII characters because it sends the key in an HTTP header. Remove any extra characters introduced when copying.

Why are Composio tools unavailable after saving a key?

Check that you use Atomic Agent v0.5.6 or later and that Composio is enabled in your configuration. A "composio": { "enabled": false } setting disables the integration while keeping the saved key on disk.

Does Composio have a free plan?

The Hobby plan includes 100,000 tool calls per month. Composio-managed OAuth apps have a lower included allowance. See Composio pricing for the current limits that apply to your connection.

TOOLS

Supported Tools

Every Weathermap action and event your agent gets out of the box.

Geocode Location to Coordinates

Tool to resolve a human place name into canonical lat/lon coordinates using OpenWeather Geocoding API.

Weather Info

Tool for querying the OpenWeatherMap API.

FAQ

Frequently asked questions

With a standalone Weathermap MCP server, the agents and LLMs can only access a fixed set of Weathermap tools tied to that server. However, with the Composio Tool Router, agents can dynamically load tools from Weathermap and many other apps based on the task at hand, all through a single MCP endpoint.

Yes, you can. Atomic Agent fully supports MCP integration. You get structured tool calling, message history handling, and model orchestration while Tool Router takes care of discovering and serving the right Weathermap tools.

Yes, absolutely. You can configure which Weathermap scopes and actions are allowed when connecting your account to Composio. You can also bring your own OAuth credentials or API configuration so you keep full control over what the agent can do.

All sensitive data such as tokens, keys, and configuration is fully encrypted at rest and in transit. Composio is SOC 2 Type 2 compliant and follows strict security practices so your Weathermap data and credentials are handled as safely as possible.

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