Examples

Code in this section follows the patterns used in the a2a-adapter examples  on GitHub.

Run the examples

The a2a-adapter repository  includes runnable examples in the examples/ directory. Use them to try different adapters and the A2A client.

1. Clone the repository

git clone https://github.com/hybroai/a2a-adapter.git
cd a2a-adapter

2. Install dependencies

pip install a2a-adapter

3. Start an agent server

In a terminal, run one of the agent examples (the server will listen on port 9000 by default unless the script says otherwise):

# N8n workflow agent (no n8n instance required for a minimal run)
python examples/01_single_n8n_agent.py
 
# Or: CrewAI crew
python examples/02_single_crewai_agent.py
 
# Or: LangChain / LangGraph / OpenClaw / custom...
python examples/03_single_langchain_agent.py
python examples/07_langgraph_server.py
python examples/08_openclaw_agent.py
python examples/05_custom_adapter.py

Leave this terminal running.

4. Call the agent from another terminal

Open a second terminal, from the same repo root:

cd a2a-adapter
python examples/04_single_agent_client.py

The client sends a test message to http://localhost:9000 and prints the agent’s response. You can point the client at a different base URL if your agent runs on another port or host.

Example files overview