4. Communication Flows and Sequences - HugAI v2 Specification¶

This section describes the main communication flows between agents, humans, and tools in the HugAI v2 protocol, using sequence diagrams and examples.

4.0. Table of Phases, Agents, and Checkpoints¶

Phase	Main Agents	Governance Checkpoints	Brief Description
Analysis	Requirements Analyzer, Domain Expert	Requirements Review	Extraction and validation of requirements, context
Design	Architecture Agent, Router Agent	Architecture Approval	Architecture, models, and API design
Implementation	Code Generator, Integration Agent, Documentation Writer	Code and documentation review	Code generation, integration, documentation
Quality	Test Agent, Security Agent, Performance Agent, Code Reviewer	Quality and security approval	Testing, security analysis, performance, review
Operations	Deployment Agent, DevOps Agent, Maintenance Agent, Observability Agent	Deployment approval, monitoring	Deployment, CI/CD, monitoring, maintenance
Governance	Compliance Agent, Risk Management Agent, Escalation Manager	Audit, compliance, risk management	Supervision, compliance, incident management

4.0.1. Phases, Agents, and Checkpoints Diagram¶

flowchart TD
    A[Analysis] -->|Validated requirements| B[Design]
    B -->|Architecture approved| C[Implementation]
    C -->|Code reviewed| D[Quality]
    D -->|Quality approved| E[Operations]
    E -->|Deployment approved| F[End]
    subgraph Checkpoints
      A1[Requirements review]
      B1[Architecture approval]
      C1[Code review]
      D1[Quality approval]
      E1[Deployment approval]
      F1[Audit/Compliance]
    end
    A --> A1
    B --> B1
    C --> C1
    D --> D1
    E --> E1
    F --> F1

4.0.2. Explanation of Phases and Collaboration¶

Analysis: Analysis agents extract and validate requirements, with human review if needed.
Design: Design agents propose architectures and models, subject to stakeholder approval.
Implementation: Implementation agents generate code and documentation, reviewed by quality agents and humans.
Quality: Quality agents run tests, security and performance analysis, with approval checkpoints.
Operations: Operations agents deploy, monitor, and maintain the system, with approvals for critical deployments.
Governance: Governance agents oversee compliance, risks, and manage incidents, with audit and final checkpoints.

4.1. Agent Initialization and Registration¶

Description: A client or agent initiates the connection, negotiates capabilities, and registers in the system.

sequenceDiagram
    participant Client
    participant Protocol
    participant Agent
    Client->>Protocol: initialize
    Protocol-->>Client: response (ack)
    Client->>Protocol: agent/register
    Protocol-->>Client: response (successful registration)
    Protocol->>Agent: new agent notification (optional)

Example messages: - initialize - agent/register - response

4.2. Task Request and Response Between Agents¶

Description: An agent requests another to execute a task and receives the response.

sequenceDiagram
    participant AgentA
    participant Protocol
    participant AgentB
    AgentA->>Protocol: agent/request (task)
    Protocol->>AgentB: agent/request (task)
    AgentB-->>Protocol: response (result)
    Protocol-->>AgentA: response (result)

Example messages: - agent/request - response

4.3. Governance Flow and Human Approval¶

Description: An agent or the system requests human approval for an artifact or critical decision.

sequenceDiagram
    participant Agent
    participant Protocol
    participant Human
    Agent->>Protocol: governance/approval (request)
    Protocol->>Human: approval notification
    Human-->>Protocol: governance/approval (decision)
    Protocol-->>Agent: response (decision)

Example messages: - governance/approval - response

4.4. External Tool Integration¶

Description: An agent interacts with an external tool (CI/CD, analysis, etc.) through the protocol.

sequenceDiagram
    participant Agent
    participant Protocol
    participant Tool
    Agent->>Protocol: tool/integration (action)
    Protocol->>Tool: tool/integration (action)
    Tool-->>Protocol: response (result)
    Protocol-->>Agent: response (result)

Example messages: - tool/integration - response

4.5. Auditing and Traceability¶

Description: All relevant actions are logged for traceability and compliance.

sequenceDiagram
    participant Actor
    participant Protocol
    participant Audit
    Actor->>Protocol: relevant action (any message)
    Protocol->>Audit: audit/log
    Audit-->>Protocol: response (ack)

Example messages: - audit/log - response

Note: These flows can be combined and extended depending on the system's complexity and use cases.