Inside the xAgent Agent Harness, Part 1: How Sessions Understand Task Changes
Many Agent systems describe a harness as one loop: send a user message to a model, execute the Tool Call returned by the model, and send the result back. That loop matters, but it does not answer an earlier question. When the user sends another message, does it continue the current task, begin a new phase of the same task, or fall outside the responsibility of the current Session?
xAgent handles this before the business Agent runs. The original input first enters the Session as a stable fact. The system then evaluates the task relationship, maintains Session goals, and adjusts Skills and Tools only when the change actually requires it. The business Agent receives an aligned task state and execution environment instead of a capability set permanently fixed when the Session was created.