Agent-by-Agent — Structural Reference

Orientation

Agent-by-agent describes the structural organization of systems in which state transitions, decisions, or outcomes emerge through sequential interactions between discrete agents. It addresses how system behavior is constructed stepwise through agent-to-agent exchanges rather than through centralized coordination.

The concept emerges within interaction-driven systems, including distributed artificial intelligence, multi-agent environments, machine-to-machine communication frameworks, and protocol-based systems. These systems rely on discrete exchanges between agents to produce coherent system-level outcomes.

Agent-by-agent reflects a shift from centralized orchestration toward interaction-based system evolution. System state is not imposed by a central controller but is formed incrementally through successive agent interactions that propagate and transform state across the system.

Problem Space

Interaction-driven systems operate through distributed agents with partial information and localized decision logic, creating a structural challenge in coordinating consistent system-level outcomes. This introduces dependency on interaction order, response timing, and propagation effects across agents.

Sequential Interaction vs. Global Coordination

Agent-by-agent systems rely on stepwise exchanges rather than global synchronization. System behavior emerges through sequences of interactions, making coordination dependent on interaction flow rather than centralized control.

Local Decision vs. System Outcome

Each agent operates based on local information and internal logic, while system-level outcomes arise from the aggregation of these interactions. This creates a structural gap between local decisions and global system behavior.

Propagation vs. Stability

State changes propagate across agents through interaction chains, potentially amplifying or stabilizing system behavior. The system must manage how local changes influence broader system dynamics through successive exchanges.

Structure

Further structural context is described in the About section, including positioning within interaction-driven systems and differentiation from related system models.

Formal definition, scope boundary, and structural models are provided in Method.