> ## Documentation Index
> Fetch the complete documentation index at: https://docs.layer3x.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Introduction

> Layer3x — The Execution Firewall for AI-Driven Payments

Layer3x is a runtime execution authorization platform for AI agents

operating in financial and payment workflows.

Before any AI-generated payment executes, it passes through Layer3x.

The response is one of three deterministic signals:

## 🟢 GO

Policy validated. Action authorized. Proceed with execution.

## 🔴 NO-GO

Blocked by policy. Reason logged. Webhook fired to your systems.

## 🟡 EXCEPTION

Anomaly detected — hash mismatch or silent timeout.

Transaction frozen pending reconciliation.

***

## What Layer3x is not

* **Not an IAM tool** — IAM grants access to systems. Layer3x governs

  whether a specific AI-generated action should execute right now.

* **Not a workflow tool** — workflow tools orchestrate sequences.

  Layer3x intercepts at the execution boundary.

* **Not an AI monitoring tool** — monitoring observes after the fact.

  Layer3x blocks before execution.

***

## How it connects

**Claude MCP** — Connect as a native tool in 60 seconds.

One URL in your Claude connector settings. No SDK required.

→ See \[MCP Setup]\(/integration/mcp-setup)

**REST API** — Works with LangChain, Make, n8n, or any custom agent.

→ See \[REST API]\(/integration/rest-api)