Explain Flow

Explain Flow

Trace the message flow in an AG2 multi-agent conversation. Use this command when you need to understand how messages move between agents, debug unexpected routing, or document a conversation pattern.

How to Trace

1. Identify the entry point

Find where the conversation starts. Look for:

• run_group_chat(pattern=..., messages="...") -- group chat entry
• agent.initiate_chat(recipient, message="...") -- two-agent entry

2. Determine the pattern

Check the pattern type to understand routing:

• DefaultPattern with handoffs: Follow the Handoff list to see allowed transitions. The LLM picks from allowed targets based on the conversation.
• AutoPattern: The group manager LLM selects the next speaker each turn. Check group_manager_args for the model used.
• RoundRobinPattern: Agents speak in list order, cycling back to the start.

3. Trace each turn

For each message in the conversation:

Turn 1: [initial_agent] receives the user message
Turn 2: [initial_agent] replies -> routed to [next_agent] via handoff/pattern
Turn 3: [next_agent] replies -> ...
...
Turn N: [final_agent] replies with TERMINATE -> conversation ends

4. Tool call detours

When an agent makes a tool call, the flow is:

caller_agent -> [tool call: function_name(args)] -> executor_agent
executor_agent -> [tool result: return_value] -> caller_agent
caller_agent -> continues conversation

Tool calls add two extra turns (call + result) before the conversation resumes.

5. Identify termination

The conversation ends when:

• An agent's reply contains TERMINATE
• max_rounds is reached (if configured)
• No valid next speaker is found

Checklist

When explaining a flow, cover each of these:

• Entry point and initial message
• Pattern type and routing logic
• Each agent's role in the conversation
• Handoff transitions (who can speak to whom)
• Tool calls and their effect on flow
• Termination condition
• Total expected turns for a typical run

Example Output

Flow: Research and Summarize

1. User message -> researcher (initial_agent)
2. researcher -> [tool: web_search("quantum error correction")] -> executor
3. executor -> [result: "...search results..."] -> researcher
4. researcher -> [handoff] -> writer
5. writer -> [summary text + TERMINATE] -> END

Pattern: DefaultPattern
Handoffs: researcher -> writer
Tools: web_search (caller=researcher, executor=executor)
Termination: writer replies with TERMINATE