Coordination Patterns

RoundBasedCoordinationPattern and BlackboardPattern provide peer-only coordination without a central orchestrator agent.

Core behavior

• Round-based execution with deterministic peer order (sorted peer ids).

• No manager/supervisor role required.

• Explicit termination reasons:

  • converged

  • max_rounds_reached

  • explicit_stop

  • peer_failure

Blackboard specialization

BlackboardPattern keeps an explicit shared board payload:

{
    "task": str,
    "round": int,
    "messages": list,
    "proposals": dict,
    "decisions": dict,
    "history": list,
}

The reducer merges per-peer contributions by channel, appends immutable message history entries, computes state_hash, and can declare convergence when the hash stays unchanged for configured stability rounds.

Background references

• AutoGen

• CAMEL

• MetaGPT

• ChatDev

These are examples of LLM multi-agent coordination; these patterns are framework-native and intentionally minimal.

Example

See examples/patterns/coordination_patterns.py.