AI_PLUMBER
SYSTEM_INDEX
UPLINK STATUS: OPTIMIZED
ACCESS_LEVEL: ADMIN_ROOT
SESSION_ID: 0x99_PIPE_FLOW
LAST_SYNC: 22.03.2026_04:00_GMT
©2026 AI_PLUMBER_CORP
architecture AI PLUMBER
Home / Framework / AI Plumber Stack
Framework

AI Plumber Stack

The six-layer governance architecture for regulated agentic AI. Every pipe must be operational before agents get write access. By Koen Van Lysebetten.

The Six Pipes

Six architectural layers stacked in order of operational priority. Each layer depends on the one below it. Skip a pipe, and the stack collapses under regulatory pressure.

01

Identity

Constrained agent identities with narrowly scoped service accounts. No agent inherits human privileges. Every action is cryptographically attributable to a specific agent identity.

02

Audit

Full decision trail: input context, reasoning trace, output action, confidence score. 100% reversible. Every agent decision can be traced, reviewed, and rolled back.

03

Kill Switch

Real-time telemetry against safety thresholds. Velocity, cost, error rate, confidence decay, policy violations. Threshold breach triggers automatic suspension and human escalation.

04

Human Gate

High-stakes actions require explicit human approval. The workflow mechanically pauses. No agent can bypass the gate without a valid human authorization token.

05

Legacy Insulation

Isolation layers between AI agents and legacy systems. Prevents cascading failures across system boundaries. API translation layers absorb breaking changes without governance regression.

06

Learning Loop

Continuous improvement driven by production telemetry. Model performance, governance violations, cost trends, and confidence distributions feed back into architecture decisions.

Related

Ready to implement the six-pipe governance stack?

Book Architecture Review →