---

iso_doc_type: "Description" iso_viewpoint: "SequenceView" type: "architecture" title: "Experiment Lifecycle — 6-Phase Hatchet DAG" description: "ISO 42010 SequenceView / ISO 15289 Description documentation for Experiment Lifecycle — 6-Phase Hatchet DAG." tags: ['iso42010', 'okf', 'sequence_view', 'dag'] timestamp: "2026-10-01T14:00:00Z" generated: "agent:okf-professional-documenter" verified: "true" last_verified_commit: "fbdc5848"

Experiment Lifecycle — 6-Phase Hatchet DAG

Purpose: Phase-by-phase breakdown of the autonomous mission lifecycle with responsible agents, I/O artifacts, and transitions.

---

Phase Sequence Diagram

sequenceDiagram
    participant PO as Product Owner
    participant Poller as PollerDaemonService
    participant Hatchet as Hatchet DAG
    participant Rustant as RustantAgent
    participant ZeroClaw as ZeroClawAgent
    participant Auditor as AuditorAgent
    participant Reviewer as Senior Reviewer

    Note over PO,Reviewer: Phase 1: Ingestion
    PO->>Poller: Create tagged issue (V1)
    Poller->>Hatchet: PolledIssueEvent

    Note over PO,Reviewer: Phase 2: Plan
    Hatchet->>Rustant: plan_mission(goal)
    Rustant->>Rustant: R2R context + SDD sequence
    Rustant-->>Hatchet: SddMissionPlan
    Hatchet->>PO: Tech Lead approval (V2)

    Note over PO,Reviewer: Phase 3: Code
    Hatchet->>ZeroClaw: execute_tdd_task(tasks)
    ZeroClaw->>ZeroClaw: TDD Red→Green→Refactor
    ZeroClaw-->>Hatchet: Code patches

    Note over PO,Reviewer: Phase 4: Validation
    Hatchet->>ZeroClaw: run_tests(suite)
    Hatchet->>Auditor: security_review(diff)
    ZeroClaw-->>Hatchet: Test results
    Auditor-->>Hatchet: SAST score

    Note over PO,Reviewer: Phase 5: Review
    Hatchet->>Rustant: review_mission(results)
    Rustant-->>Hatchet: Approval/rejection

    Note over PO,Reviewer: Phase 6: Delivery
    Hatchet->>Poller: Create PR/MR
    Poller->>Reviewer: PR for review (V4)
    Reviewer->>Reviewer: Manual merge

Phase Detail Table

Phase	Agent	Input	Output	HITL Gate	Failure Mode
1. Ingestion	PollerDaemonService	GitHub/GitLab/Jira event	PolledIssueEvent	V1: PO creates Epic	Invalid labels → Skip
2. Plan	RustantAgent	Goal + R2R context	SddMissionPlan	V2: Tech Lead approves	LLM timeout → Retry
3. Code	ZeroClawAgent	SddTaskItem list	Code patches	—	Compilation error → Retry
4. Validation	ZeroClaw + Auditor	Code patches	Test + SAST results	V3: Architect (deadlock)	SAST < 8.0 → Block
5. Review	RustantAgent	Validation results	Review decision	—	Rejection → Back to Phase 3
6. Delivery	PollerDaemonService	Approved changes	PR/MR	V4: Reviewer merges	—

---

Related: Agent Specifications · HITL Governance