This example is based on the Hello World example from a2a
https://github.com/a2aproject/a2a-samples.git
https://a2a-protocol.org/latest/tutorials/python/1-introduction/


# Hello World Example

Hello World example agent that only returns Message events

## Getting started

1. Start the server

   ```bash
   uv run run_main_agent.py
   ```

2. Run the test client

   ```bash
   uv run run_test_client.py
   ```

## Disclaimer
Important: The sample code provided is for demonstration purposes and illustrates the mechanics of the Agent-to-Agent (A2A) protocol. When building production applications, it is critical to treat any agent operating outside of your direct control as a potentially untrusted entity.

All data received from an external agent—including but not limited to its AgentCard, messages, artifacts, and task statuses—should be handled as untrusted input. For example, a malicious agent could provide an AgentCard containing crafted data in its fields (e.g., description, name, skills.description). If this data is used without sanitization to construct prompts for a Large Language Model (LLM), it could expose your application to prompt injection attacks.  Failure to properly validate and sanitize this data before use can introduce security vulnerabilities into your application.

Developers are responsible for implementing appropriate security measures, such as input validation and secure handling of credentials to protect their systems and users.