Agent interactions

Add a second agent

To show μAgents interacting, we'll need to create a second agent. Importing the Bureau class will allow us to create a collection of agents and run them together in the same script. Then we can simply add agents alice and bob to the Bureau and run it.

from uagents import Agent, Context, Bureau

alice = Agent(name="alice", seed="alice recovery phrase")
bob = Agent(name="bob", seed="bob recovery phrase")

@alice.on_interval(period=2.0)
async def say_hello(ctx: Context):
    ctx.logger.info(f'Hello, my name is {ctx.name}')

@bob.on_interval(period=2.0)
async def say_hello(ctx: Context):
    ctx.logger.info(f'Hello, my name is {ctx.name}')

bureau = Bureau()
bureau.add(alice)
bureau.add(bob)

if __name__ == "__main__":
    bureau.run()

Yoy should observe alice and bob printing out their name in the terminal.

Run your agents

python simple-agents.py

You will see the message printed out every 2 seconds. You might see a message indicating insufficient funds to register, check out agent registration for more information.

Hello, my name is alice Hello, my name is bob Hello, my name is alice Hello, my name is bob

Agent communication

To allow our agents to communicate with each other we will need a message structure, and for that, we need to import Model to define a generic message.

from uagents import Model

class Message(Model):
    text: str

We can use the send function from the Context class to send a message from alice to bob on an interval.

@alice.on_interval(period=2.0)
async def send_message(ctx: Context):
    msg = f'hello there {bob.name} my name is {alice.name}'
    await ctx.send(bob.address, Message(text=msg))

We also need to introduce a message handler for bob. We will do this inside the on_message decorator that will activate the message_handler once bob receives the message.

@bob.on_message(Message)
async def message_handler(ctx: Context, sender: str, msg: Message):
    ctx.logger.info(f"Received message from {sender}: {msg.text}")
    ctx.logger.info(msg)

Finally, we need to add both agents to the Bureau in order to run them from the same script.

from uagents import Agent, Context, Bureau, Model

class Message(Model):
    text: str

alice = Agent(name="alice", seed="alice recovery phrase")
bob = Agent(name="bob", seed="bob recovery phrase")

@alice.on_interval(period=2.0)
async def send_message(ctx: Context):
    msg = f'hello there {bob.name} my name is {alice.name}'
    await ctx.send(bob.address, Message(text=msg))


@bob.on_message(model=Message)
async def message_handler(ctx: Context, sender: str, msg: Message):
    ctx.logger.info(f"Received message from {sender}: {msg.text}")


bureau = Bureau()
bureau.add(alice)
bureau.add(bob)

if __name__ == "__main__":
    bureau.run()

When running the script above, you should see alice's message printed on the terminal:

Run your agents

python agent-communication.py

[bob]: message received from agent1qww3ju3h6kfcuqf54gkghvt2pqe8qp97a7nzm2vp8plfxflc0epzcjsv79t: hello there bob my name is alice [bob]: message received from agent1qww3ju3h6kfcuqf54gkghvt2pqe8qp97a7nzm2vp8plfxflc0epzcjsv79t: hello there bob my name is alice

You could also try to add a response from bob to alice, for that you would need to add a send message from bob after alice's message is received and a new message handler for alice to be able to manage and print out bob's message. For a slightly more complex example check out the next section remote agents.