Separate sessions reduce accidental context mixing between roles and prevent internal tool chatter from overwhelming a human-facing workspace. Each agent can retain only the instructions and task state relevant to its responsibility.
Isolation still needs controlled handoffs. A coordinator should pass concise verified outputs across sessions instead of exposing every internal message or allowing agents to share state implicitly.
ELI5
Agent session isolation keeps each AI agent's conversation and temporary working context separate by default. Information moves between agents only when an allowed coordination step deliberately shares it.
For example, a research agent can send a short source summary to a writing agent without exposing every private note from its session. This reduces accidental context leakage, although files, credentials and tool permissions also need their own enforced boundaries.
