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Interaction Structure

In a multi-agent agency, defining roles and responsibilities is only part of the coordination problem. Even when agents understand their roles, the organization still needs mechanisms that specify how agents interact with one another to achieve shared outcomes.

The interaction structure of an agency defines the patterns through which roles collaborate, exchange information, and progress toward organizational goals. It organizes complex collaborations into structured sequences of activities that agents can follow while maintaining flexibility in how they perform individual actions.

Without interaction structure, agents may understand their responsibilities but lack clear guidance on how to coordinate their actions with others. Interaction structures provide the operational blueprint that transforms role-based responsibilities into coordinated workflows.

In AgencyGrid, interaction structures are designed to support both predictable coordination and flexible execution. The agency defines the expected patterns of collaboration, while agents retain autonomy in deciding how to achieve their objectives within those patterns.

Why Interaction Structure Matters

In large multi-agent organizations, coordination is inherently complex. Tasks may require multiple agents working together across different stages of a workflow. These agents may need to exchange information, negotiate decisions, validate results, and coordinate their activities across time.

Without structured interaction patterns, collaboration can become chaotic.

Agents may attempt to communicate in incompatible ways, pursue tasks in the wrong order, or duplicate each other’s work. Even when agents possess the necessary capabilities, the absence of structured interactions can prevent effective cooperation.

Interaction structures solve this problem by defining:

  • how interactions begin
  • which roles participate in them
  • how communication occurs
  • what conditions must be achieved during the interaction
  • how interactions transition into subsequent stages

Through these mechanisms, interaction structures provide the framework for coordinated activity within the agency.

Scenes: Units of Interaction

In AgencyGrid, interactions are typically organized into scenes.

A scene represents a structured interaction involving specific roles working together toward a defined outcome. Scenes provide a way to break complex workflows into manageable segments that can be executed and coordinated independently.

Each scene defines several elements:

  • the roles that participate in the interaction
  • the objective that the interaction aims to achieve
  • the rules governing communication between participants
  • the conditions that determine when the interaction begins and ends

For example, in a distributed software development agency, a scene might represent the task assignment phase. In this scene, a planning role assigns development tasks to coding roles.

Another scene might represent code verification, where evaluator roles examine submitted code and determine whether it meets quality standards.

By dividing workflows into scenes, the agency can organize interactions into structured phases that guide collaboration.

Scene Scripts

Scenes are defined through scene scripts, which specify how the interaction should unfold.

A scene script describes:

  • which roles must participate
  • what goals must be achieved
  • how roles are expected to interact
  • what communication patterns are allowed

Scene scripts do not specify every action that agents must take. Instead, they define the expected structure of the interaction, leaving agents free to determine how they achieve the required outcomes.

This approach preserves agent autonomy while ensuring that interactions follow organizational expectations.

For example, a negotiation scene script might define that a requester role proposes a task, evaluator roles analyze feasibility, and a decision role determines whether the proposal is accepted.

The exact negotiation strategy used by each agent may vary, but the overall structure of the interaction remains consistent.

Interaction Goals

Every scene has an associated goal that defines the desired outcome of the interaction.

Interaction goals represent the conditions that must be satisfied for the scene to be considered complete.

For example, a document review scene might aim to achieve the goal that:

  • a document has been submitted
  • it has been evaluated
  • a final decision has been recorded

Once these conditions are satisfied, the scene is complete and the workflow can progress to the next stage.

Defining explicit interaction goals helps ensure that collaborative activities produce meaningful outcomes.

Landmarks

Within scenes, important conditions are often represented by landmarks.

A landmark is a state or condition that must be achieved during the course of an interaction. Landmarks provide reference points that help coordinate the activities of multiple participants.

For example, in a task execution workflow, landmarks might include:

  • task specification received
  • task execution started
  • task result submitted
  • result verified

These landmarks define key milestones that structure the interaction.

Landmarks can also be arranged in a partial order, which specifies the sequence in which certain conditions must occur while still allowing flexibility in how they are achieved.

Different agents may use different strategies to reach the same landmark, allowing the agency to support diverse approaches to problem solving.

Interaction Flexibility

One of the strengths of the landmark approach is that it allows flexibility within structured interactions.

Rather than prescribing specific actions that agents must take, landmarks define the conditions that must be achieved.

Agents remain free to determine how to reach those conditions using their own reasoning strategies and capabilities.

For example, two analysis agents may both reach the landmark of producing an analytical report, but they may use different datasets, algorithms, or tools to generate their results.

This flexibility allows the agency to support heterogeneous agents while maintaining coordinated workflows.

Transitions Between Scenes

Scenes do not exist in isolation. Complex workflows require interactions to occur in sequences that progress toward the agency’s objectives.

The connections between scenes are defined by transitions.

Transitions specify:

  • which scenes follow others
  • the conditions required for a new scene to begin
  • synchronization rules between scenes

For example, a development workflow might include the following sequence:

  1. task assignment scene
  2. development scene
  3. testing scene
  4. deployment scene

Transitions ensure that each scene begins only when the required conditions from previous scenes have been satisfied.

This mechanism allows the agency to coordinate complex multi-stage workflows.

Concurrent Scenes

In many cases, multiple interactions can occur simultaneously.

AgencyGrid supports concurrent scenes, allowing different interactions to take place in parallel.

For example:

  • several development tasks may be executed simultaneously by different agents
  • multiple review processes may occur in parallel
  • negotiation interactions may occur between different participants at the same time

Agents may also participate in multiple scenes simultaneously, depending on their roles and responsibilities.

Concurrency improves system efficiency by allowing independent activities to proceed without waiting for unrelated interactions to complete.

Scene Creation and Lifecycle

Scenes are not always predefined or permanent. In many systems, scenes are created dynamically as needed.

For example, each new task assigned within a workflow may create a new instance of an execution scene.

Scene lifecycle management includes:

  • creating new scene instances
  • tracking the progress of interactions
  • terminating scenes once their goals are achieved

Agencies may also impose limits on how many instances of a particular scene can exist simultaneously in order to manage system resources.

Coordination Through Interaction Structure

Interaction structures enable the agency to coordinate the activities of multiple agents without controlling every detail of their behavior.

By defining structured interaction patterns, the agency ensures that:

  • tasks progress through well-defined stages
  • agents communicate using consistent protocols
  • dependencies between activities are respected

At the same time, agents retain autonomy in determining how they perform their roles within each interaction.

This balance between structure and flexibility allows multi-agent systems to achieve both stability and adaptability.

Interaction Protocols

Within scenes, communication between roles often follows defined interaction protocols.

Interaction protocols specify the sequence of communicative acts that agents exchange during an interaction.

Examples of communicative acts may include:

  • requests
  • proposals
  • confirmations
  • approvals
  • notifications

Protocols ensure that participants understand the meaning of messages and respond in appropriate ways.

For example, a task negotiation protocol may involve:

  1. a request message initiating the interaction
  2. proposals from potential participants
  3. evaluation of proposals
  4. acceptance or rejection of offers

Such protocols help standardize interactions and reduce ambiguity in communication.

Structured Collaboration

Through scenes, landmarks, transitions, and interaction protocols, AgencyGrid provides a framework for structured collaboration.

This framework ensures that agents coordinate their activities in ways that support the agency’s objectives.

Structured collaboration allows organizations of agents to perform complex operations such as:

  • distributed problem solving
  • collaborative research
  • multi-stage decision making
  • coordinated resource allocation

Each of these processes involves multiple participants working together through organized interaction patterns.

Interaction Structures in Open Systems

In open environments, agents may come from diverse sources and may not share the same internal designs.

Interaction structures provide a common framework that allows such agents to collaborate effectively.

Because the agency defines the interaction patterns externally, agents only need to understand the structure of the scenes and the protocols governing communication.

They do not need to share the same reasoning methods or internal architectures.

This design supports interoperability across heterogeneous agents.

Interaction Structures and Organizational Adaptation

Interaction structures can evolve as agencies adapt to changing conditions.

Agencies may modify:

  • scene definitions
  • interaction protocols
  • transitions between scenes
  • the ordering of landmarks

These changes allow the organization to adjust workflows in response to new goals, environmental changes, or improvements in coordination strategies.

Adaptive interaction structures ensure that agencies remain effective even as their operating environments evolve.

Interaction Structure as the Engine of Coordination

Interaction structures are the mechanisms that transform organizational roles into coordinated activity.

While the social structure defines the participants and their responsibilities, interaction structures define how collaboration actually unfolds in practice.

Through scenes, landmarks, transitions, and communication protocols, AgencyGrid organizes interactions in a way that enables agents to coordinate effectively while maintaining their autonomy.

This interaction layer acts as the engine that drives collaborative workflows within the agency.

By providing clear patterns for coordination, interaction structures enable large-scale multi-agent organizations to perform complex tasks with reliability, flexibility, and efficiency.