Documentation
Everything you need to know about using Atomic Rail for your API monetization.
Getting Started
Learn the basics and get up and running quickly
Guides
In-depth tutorials and how-to articles
Getting Started
Quick Start
Get your first paid API endpoint running in under 5 minutes. Install the package, get your credentials, set up your API, and start earning.
Core Concepts
Understand how Atomic Rail works — the x402 protocol, usage metering, direct payments, and cryptographic security.
Installation
Install the Atomic Rail SDK and set up your environment. Covers npm, bun, yarn, and environment variables.
Guides
Creating Your First Paid API
A hands-on guide to building a complete pay-per-use API from server to client.
Understanding the Dashboard
A quick tour of your Atomic Rail Meter Dashboard.
Action Registry
The Action Registry is the "Source of Truth" for your gated APIs. It allows you to move the configuration of your infrastructure from hardcoded files to a dynamic, UI-driven control plane.
Client-Side Integration
This guide explains how to integrate Atomic Rail payments into your frontend. We provide a high-level SDK that automates wallet orchestration, mobile deep-linking, and payment signatures.
Accessing Payer Info
How to use `req.payerAddress` for personalization and user-specific logic.
Testing in Development
How to test your paid APIs locally and on testnet before going to production.
Deploying to Production
Checklist and guides for deploying your paid API to production.