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Multi-Agent Constitutional Architecture

RFC-001 — A four-layer governance architecture for multi-agent AI systems.

Replaces ad-hoc coordination (natural language group chats, implicit role assumptions, unstructured orchestration) with a formal constitutional framework that functions simultaneously as a management document and a technical specification.

Why This Exists

Multi-agent AI coordination fails at empirically documented rates:

  • 41–86.7% failure rates across 1,642 production execution traces (Galileo, 2025)
  • Up to 70% performance degradation when adding agents to sequential tasks (DeepMind/MIT, 180 configurations, Dec 2025)
  • 40% of multi-agent pilots fail within six months of production (TechAhead, 2026)

The constitutional architecture addresses five structural failure modes: simultaneous action collision, hallucination cascading, context window commons depletion, split-brain inconsistency, and silent degradation under overload.

Architecture

┌──────────────────────────────────────────────────────┐
│  Section 0: Task Classification & Applicability Gate │
├──────────────────────────────────────────────────────┤
│  Layer 1: Foundational Principles                    │
│  Layer 2: Behavioral Archetypes                      │
│  Layer 3: Operational Protocols                      │
│  Layer 4: Amendment & Learning                       │
├──────────────────────────────────────────────────────┤
│  Cross-cutting: Observability Layer                  │
└──────────────────────────────────────────────────────┘

Section 0 is the most important part — it tells you when NOT to use multi-agent architecture.

Key Design Principles

  • Governance is code. Every norm, role, and resolution mechanism is machine-readable.
  • Minimize communication. The best coordination doesn't require agents to talk.
  • Fail loud. Silent degradation is the primary enemy.
  • Match architecture to task. No single coordination pattern is universally optimal.
  • Simpler than you think. Complexity is a cost. Pay it only when evidence says it's worth it.

Documents

Document Description
RFC-001.md Full specification (v0.2.0)

Companion Essay

Five AI Agents Walk Into a Group Chat — explores the convergence of management and engineering in multi-agent systems, and why constitutions beat group chats.

Empirical Grounding

This RFC is grounded in recent research:

  • Kim, Y. et al. (2025). Towards a Science of Scaling Agent Systems. Google DeepMind / MIT.
  • Cemri, M. et al. (2025). Why Do Multi-Agent LLM Systems Fail? NeurIPS 2025. [MAST Taxonomy]
  • Cursor (2026). Scaling Long-Running Autonomous Coding. FastRender experiment.
  • Hammond, L. et al. (2025). Multi-Agent Risks from Advanced AI.

Status

Draft — open for discussion and contribution.

License

CC BY-SA 4.0


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A four-layer governance architecture for multi-agent AI systems

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