---
id: "concept-the-agent-stack"
type: "concept"
source_timestamps: ["00:02:51", "00:03:02"]
tags: ["framework", "taxonomy", "infrastructure"]
related: ["concept-layer-1-compute", "concept-layer-2-identity", "concept-layer-3-memory", "concept-layer-4-tools", "concept-layer-5-trust", "concept-layer-6-orchestration", "framework-the-agent-stack"]
definition: "A taxonomy dividing the emerging AI agent infrastructure into six distinct layers: Compute, Identity, Memory, Tools, Trust, and Orchestration."
sources: ["s52-orchestration-layer"]
sourceVaultSlug: "s52-orchestration-layer"
originDay: 52
---
# The 6-Layer Agent Stack

## Definition
A taxonomy dividing the emerging AI agent infrastructure into six distinct layers — the "system calls" of the agent operating system.

## The six layers
1. **Layer 1 — Compute & Sandboxing** ([[concept-layer-1-compute]]): safe, isolated execution environments.
2. **Layer 2 — Identity & Communication** ([[concept-layer-2-identity]]): protocols for agents to be recognized and to message each other.
3. **Layer 3 — Memory & State** ([[concept-layer-3-memory]]): active curation of context across sessions.
4. **Layer 4 — Tools & Integration** ([[concept-layer-4-tools]]): middleware for SaaS and API interaction.
5. **Layer 5 — Trust, Provisioning & Billing** ([[concept-layer-5-trust]]): financial capability and resource acquisition.
6. **Layer 6 — Orchestration & Coordination** ([[concept-layer-6-orchestration]]): multi-agent collaboration and lifecycle management.

## Why the taxonomy matters
Understanding this stack lets builders categorize vendors, identify gaps, and decide where to build proprietary value versus where to rely on commodity providers. It is the spine of the entire video and the most reusable artifact for anyone evaluating agent-infrastructure startups.

The formal version of this taxonomy as a sequenced framework lives at [[framework-the-agent-stack]]. The practical skill of using it lives at [[concept-stack-literacy]]. The marketing-side antagonist is [[concept-false-lego-marketing]].