A small Node.js example that queries the Weather Assistant agent using the @a2a-js/sdk. Two scripts are included:

• index.js – performs a blocking request and prints the final result.
• stream.js – streams partial responses as they are produced by the agent.

• Node.js 18 or later (for built‑in fetch; older versions need a polyfill)
• An API key if your agent requires one

1. Clone & install

   git clone <this-repo-url>
   cd a2a-weather-client
   npm install

2. Configure

   • Export your API key:

     export A2A_API_KEY="your_key_here"

   • Set the agent's base URL:

     export A2A_AGENT_URL="http://your-host/gateway/a2a/weather-agent/1"

3. Run

   # Query for London in blocking mode
   npm start -- "London"       # or: node index.js "London"
   
   # Stream the response instead
   node stream.js "Tokyo"

You should see output like:

📡 Asking for weather in London…
🌤  Agent says: The current temperature in London is 18°C with light rain…