How to integrate Solcast MCP with Atomic Agent

Connect Atomic Agent to Solcast MCP. Get solar irradiance forecast for sydney tomorrow, retrieve 7-day pv power forecast for berlin, and more using natural language, with authentication handled for you.

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Api Key

Solcast offers global solar resource data, including irradiance and PV power forecasts. It helps developers and businesses optimize solar energy management and analytics.

6 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 Solcast.

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 Solcast account. See the Atomic Agent documentation for installation instructions.

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How Atomic Agent connects to Solcast

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 Solcast 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 Solcast. It searches Composio for the right tool.
  4. On first use, open the sign-in link returned in the chat. Connect your Solcast 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 Solcast MCP server, and what's possible with it?

The Solcast MCP server is an implementation of the Model Context Protocol that connects your AI agent and assistants like Claude, Cursor, etc directly to your Solcast account. It provides structured and secure access so your agent can perform Solcast operations on your behalf.

Use Solcast from Atomic Agent

With your account connected, ask Atomic Agent to work with Solcast 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 Solcast action and event your agent gets out of the box.

Get Historic Radiation And Weather

Tool to get historical irradiance and weather estimated actuals for a requested location.

Get PV Power Resource

Tool to retrieve a specific PV power resource by its unique identifier.

Get Resources PV Power Sites

Tool to list PV power resources available to authenticated user.

Patch PV Power Resource

Tool to partially update an existing PV power resource's technical specifications.

Create PV Power Resource

Tool to create a new PV power resource for Advanced PV Power forecasting.

Update PV Power Resource

Tool to update an existing PV power resource with comprehensive technical specifications for solar installation site modeling.

FAQ

Frequently asked questions

With a standalone Solcast MCP server, the agents and LLMs can only access a fixed set of Solcast tools tied to that server. However, with the Composio Tool Router, agents can dynamically load tools from Solcast 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 Solcast tools.

Yes, absolutely. You can configure which Solcast 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 Solcast data and credentials are handled as safely as possible.

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