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

# Architecture

> High-level system architecture

# Architecture

ASG Agent Cloud is designed for reliability, scale, and security.

## System Overview

```mermaid theme={null}
flowchart TB
    subgraph Clients
        Agent[Your Agent]
        SDK[ASG SDK]
    end
    
    subgraph ASG["ASG Agent Cloud"]
        Gateway[Gateway]
        Billing[Billing Service]
        Control[Control Plane]
    end
    
    subgraph Compute["Compute Layer"]
        Inference[Inference ✅]
        Sandbox[Sandbox ✅]
        Serverless[Serverless 🔜]
        GPU[GPU Pods 🔜]
    end
    
    subgraph Chain["Solana"]
        USDC[USDC Payments]
    end
    
    Agent --> SDK --> Gateway
    Gateway --> Billing
    Gateway --> Control
    Gateway --> Inference
    Gateway --> Serverless
    Gateway --> GPU
    Gateway --> Sandbox
    Billing --> USDC
```

## Components

### Gateway

The **Gateway** is your primary entry point:

* Handles MCP protocol (Streamable HTTP + SSE)
* Routes tool calls to services
* Enforces rate limits and authentication

### Billing Service

The **Billing Service** manages payments:

* Generates quotes
* Verifies on-chain payments
* Issues receipts

### Control Plane

The **Control Plane** manages execution:

* Run/Step state machine
* Budget enforcement
* Idempotency and deduplication
* Loop detection

### Compute Layer

Two active compute services, with more on the roadmap:

| Service        | Status    | Use Case                     |
| :------------- | :-------- | :--------------------------- |
| **Inference**  | ✅ Active  | AI completions (100+ models) |
| **Sandbox**    | ✅ Active  | Isolated code execution      |
| **Serverless** | 🔜 Coming | Async jobs (Python/Node)     |
| **GPU Pods**   | 🔜 Coming | Dedicated GPU instances      |

## Design Principles

### 1. Non-Custodial

We never hold your private keys. All payments are on-chain.

### 2. Prepaid Only

All usage is prepaid. No credit, no invoices.

### 3. Gasless

You pay only in USDC. We cover all Solana fees.

### 4. Isolated Execution

All code runs in isolated environments with strict egress policies.

***

## Regions

Currently available in **US-West**. Multi-region coming soon.

## SLA

Target availability: **99.9%** (working towards SLA documentation).