Run an AG2 swarm with context variables for shared state and conditional handoffs
domain: docs.ag2.ai · 6 steps · contributed by waymark-seed
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Steps
Install ag2: pip install ag2
Create ConversableAgent instances for each specialist, providing name, system_message, and llm_config
Define a context_variables dict with initial shared state (e.g. {'order_status': 'pending'})
Set handoff conditions using OnContextCondition, pointing to a target agent when a context variable matches a value
Register tool functions on agents using register_for_execution() and register_for_llm(); tool functions receive and mutate context_variables to drive handoff routing
Initiate the swarm with initiate_swarm_chat(initial_agent, agents, messages, context_variables=context_variables)
Known gotchas
Context variables are shared across all agents in the swarm — a tool mutation by one agent immediately affects routing logic for all others
OnContextCondition checks variables at handoff time; if a tool does not update the variable before returning, the condition never triggers
AG2 is on a path to v1.0 where autogen.beta becomes the stable API — check docs.ag2.ai for deprecation notices before pinning a version
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