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delegate-agent

The delegate agent demonstrates A2A delegation with Python ADK. This agent showcases:

  • Agent-to-Agent (A2A) communication patterns
  • RESTful API endpoints
  • Health monitoring
  • Docker containerization
  • Multi-platform deployment

Prerequisites

Before you begin, ensure you have the following tools installed:

  • uv package manager
  • Docker for containerization
  • Make for build automation

Usage

Copy the .env template and add the Google API key:

cp .env.example .env

Run the agent with:

# Native Python environment
make run
# Docker container
make docker-run

After successful start, the agent will be available at:

Ask the agent a question using curl:

curl http://localhost:8100/ \
    -H "Content-Type: application/json" \
    -d '{
      "jsonrpc": "2.0",
      "id": 1,
      "method": "message/send",
      "params": {
        "message": {
          "role": "agent",
          "parts": [
            {
              "kind": "text",
              "text": "What is the weather in New York?"
            }
          ],
          "messageId": "9229e770-767c-417b-a0b0-f0741243c589",
          "contextId": "abcd1234-5678-90ab-cdef-1234567890ab"
        },
        "metadata": {}
      }
    }' | jq

Configuration

The agent can be configured using environment variables:

  • AGENT_A2A_RPC_URL: Base URL for the Agent-to-Agent communication
  • SUB_AGENTS: JSON map of sub agents to delegate to. Format: {"agent_name": {"url": "http://agent-url/.well-known/agent-card.json"}} (default: empty)

Sub Agents Configuration

The delegate agent can work with multiple sub agents by configuring the SUB_AGENTS environment variable. Each sub agent is defined by its name and the URL to its agent card. See .env.example for an example configuration.