How to integrate Weathermap MCP with Hermes

Hermes is a 24/7 autonomous agent that lives on your computer or server — it remembers what it learns and evolves as your usage grows. This guide explains the easiest and most robust way to connect your Weathermap account to Hermes. You can do this through either Composio Connect CLI or Composio Connect MCP. For personal use we recommend the CLI, but you won't go wrong with MCP either.

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

2 Tools

Introduction

Hermes is a 24/7 autonomous agent that lives on your computer or server — it remembers what it learns and evolves as your usage grows.

This guide explains the easiest and most robust way to connect your Weathermap account to Hermes. You can do this through either Composio Connect CLI or Composio Connect MCP. For personal use we recommend the CLI, but you won't go wrong with MCP either.

Also integrate Weathermap with

What is Composio Connect?

Composio Connect is a consumer offering that lets anyone plug 1,000+ applications directly into their agent harness — including Hermes. It can:

  • Search and load tools from relevant toolkits on-demand, reducing context usage.
  • Chain multiple tools to accomplish complex workflows via a remote workbench, without excessive back-and-forth with the LLM.
  • Manage app authentication end-to-end with zero manual overhead.

Integrating Weathermap with Hermes

Using Composio Connect CLI

1. Install the Composio CLI

Run the install script directly, or paste https://composio.dev/hermes into your Hermes chat box to have it installed for you.

bash
curl -fsSL https://composio.dev/install | bash
Hermes authenticating with Composio

2. Authenticate

Once the CLI is installed, ask Hermes to authenticate with Composio.

3. Connect to Weathermap

Ask your agent to connect to Weathermap, or simply request any Weathermap-related task. Hermes will prompt you to authenticate and authorize access.

4. Done. You're all set with a new Weathermap connection.


Using Composio Connect MCP

1. Get your MCP URL and API Key

Go to dashboard.composio.dev and copy your Connect MCP URL and API key.

Copy MCP URL and API key from Composio dashboard

2. Open the Hermes config file

bash
nano ~/.hermes/config.yaml

3. Add the Composio Connect MCP server

bash
mcp_servers:
  composio:
    url: "https://connect.composio.dev/mcp"
    headers:
      x-consumer-api-key: "YOUR_COMPOSIO_API_KEY"
    connect_timeout: 60
    timeout: 180

Save with Ctrl + O, Enter, then exit with Ctrl + X.

4. Restart your Hermes agent

Once restarted, ask your agent to connect to Weathermap or request any Weathermap-related task. It will prompt you to authenticate and authorize access.

5. Done!

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.

Way Forward

With Weathermap connected, Hermes can now act on your behalf whenever it detects a relevant task or you ask it to.

From here, you can extend Hermes further:

  • Connect more apps: Calendar, Slack, Notion, Linear, and hundreds of others are available through the same Composio Connect setup. Each new integration compounds what Hermes can do for you.
  • Build workflows across tools: Once multiple apps are connected, Hermes can chain actions together — turn an email into a calendar invite, a Slack message into a Linear ticket, or a meeting note into a follow-up draft.
  • Let it learn your patterns: The more you use Hermes, the better it gets at anticipating how you'd handle recurring tasks. Give it feedback on drafts and decisions, and it will adapt.

If you run into trouble or want to share what you've built, join the community or check out the Docs for deeper configuration options.

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. Hermes 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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