[FEATURE] Hook/Callback Support for Graph Agents

[ilove2git]

Problem Statement

Currently, the Graph multi-agent mode does not support hooks or callbacks for agents. Attempts to add an agent with hooks (i.e., custom event callbacks) result in a ValueError: "Agent callbacks are not supported for Graph agents yet."

Proposed Solution

Implement hook/callback support for agents in Graph multi-agent mode, consistent with the behavior provided in other orchestration modes.

Use Case

Allow users to leverage hooks for custom event handling, logging, telemetry, or integration with external systems when using Graph-based agent orchestration.

Alternatives Solutions

No response

Additional Context

Related: Session Persistence for Graph Agents

[zastrowm]

Unblocked using hooks as part of #760; as part of multi-agent session persistence, we'll be adding multi-agent specific hooks