AutopayOS Documentation

AutopayOS is a secure payment authorization platform that enables AI agents to make autonomous purchases within policy-defined constraints. Built on Google's Agent Payments Protocol (AP2), it provides verifiable credentials, cryptographic evidence chains, and enterprise-grade policy controls.

Get started

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Quickstart →

Accept your first agent payment in under 5 minutes.

How AutopayOS works →

Learn the core concepts: Intents, Carts, Payments, and Policies.

API Reference →

Complete reference for all REST API endpoints.

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Why AutopayOS?

Feature	Description
Policy-driven authorization	Define spending limits, merchant allowlists, velocity controls, and time windows
Cryptographic audit trail	Every transaction produces tamper-evident evidence with hash chaining
Multi-rail payments	Route payments through Stripe, Visa IC, or custom rails
Human presence verification	WebAuthn/FIDO2 integration for high-value transactions
A2A Protocol	Agent-to-Agent communication following Google AP2 specification

How it works

┌─────────────┐     ┌─────────────┐     ┌─────────────┐     ┌─────────────┐
│   Agent     │────▶│   Intent    │────▶│    Cart     │────▶│   Payment   │
│  requests   │     │  approved   │     │  verified   │     │  executed   │
└─────────────┘     └─────────────┘     └─────────────┘     └─────────────┘
                           │                   │                   │
                           ▼                   ▼                   ▼
                    ┌─────────────────────────────────────────────────────┐
                    │              Evidence Chain (Audit Trail)            │
                    └─────────────────────────────────────────────────────┘

1. Intent — Agent requests permission to shop with budget constraints
2. Cart — Merchant cart is verified against the intent and policy
3. Payment — Payment mandate is issued and executed through a payment rail

Every step is cryptographically signed and stored in the evidence chain.

Explore by use case

For AI Agent Developers

Build shopping agents that can autonomously make purchases:

• Building your first agent
• TypeScript SDK reference
• Python SDK reference

For Platform Operators

Configure policies and monitor agent activity:

• Policy configuration
• Evidence and audit trails
• Webhook notifications

For Payment Integration

Integrate with payment processors:

• Shared Payment Tokens (SPT)
• Stripe integration
• Payment rails

Quick links

Resource	Description
API Reference	Complete REST API documentation
TypeScript SDK	@autopayos/sdk package reference
Python SDK	autopayos PyPI package reference
Testing guide	Test mode, demo endpoints, sandbox
A2A Protocol	Agent-to-Agent communication spec

Base URLs

Production:  https://api.autopayos.com
Sandbox:     https://sandbox-api.autopayos.com
Dashboard:   https://dashboard.autopayos.com

Need help?

• Discord: discord.gg/autopayos
• Email: [email protected]
• GitHub: github.com/autopayos