Agents

An agent is a piece of code that receives messages and produces results.

An agent has:

• an address (like "hello"),
• a handler for incoming messages,
• and access to the fabric so it can send messages to other agents.

In the hello quickstart:

• You defined a HelloAgent (or similar) class.
• You registered it with the fabric at an address.
• You sent a single message to that address and logged the result.

That one agent was both:

• the server for that address, and
• the only piece of user-defined logic in the fabric.

As you build more complex systems, you will:

• create multiple agents with different responsibilities,
• have agents call each other (workflow/orchestrator agents, worker agents, etc.),
• and spread those agents across multiple nodes.

The underlying primitives are the same as in hello-world – just more agents and more nodes.