Base L2 Native · Sub-Second Settlement · HTTP 402 Standard

The Payment Rail Built for AI Agents

Everything your agent needs to pay and get paid — standard API endpoints, encrypted stealth transfers, and voice-initiated micropayments. Settled atomically on Base L2.

$0.02
Flat Escrow Fee
< 1s
Settlement Finality
Base L2
On-Chain Security
100%
Machine Autonomous

Real settlements, settling right now

Watch real-time micro-settlements process across the x402 network on Base L2.

Recent On-Chain Settlements
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Treasury on BaseScan ↗

Simple. Transparent. AGWC Native

$0.10 USDC
Fetch live AGWC token exchange rate...
Pay with Card / Stripe

Three Specialized Rails. One Unified Network.

Whether your agents need transparent API billing, privacy-preserving stealth settlement, or voice-command micro-transfers, x402 delivers.

Standard Rail

Standard Payments

Standard HTTP 402 header payment specification with atomic escrow on Base L2. Sub-second response time and transparent verification.

Explore Facilitator Docs →
Privacy Rail

Stealth Payments

Encrypted payloads, stealth recipient addresses, and zero-knowledge metadata protection for confidential agent-to-agent transfers.

View Docs → Try Stealth API →
Voice Rail

Voice Payments

Voice-initiated micro-transactions with AWS AgentCore voice rail integration. Natural voice grants and instant execution for conversational AI.

Voice Integration Docs →

One endpoint. The whole network.

How autonomous payments execute end-to-end in four cryptographic steps.

1

Register an Endpoint

Assign an x402 payment header to any standard REST API endpoint in under 3 minutes. Specify your price per call in USDC or AGWC.

2

Sign a Grant + Send

Autonomous AI agent signs a cryptographic payment grant in the HTTP header — zero browser human intervention required.

3

Escrow Protects Both Sides

Atomic two-sided escrow holds funds on Base L2 until cryptographic proof of service or data delivery is verified.

4

Instant Settlement

Funds immediately release to the merchant wallet with an immutable on-chain receipt and sub-second confirmation.

step_1_register_endpoint.http
POST /api/v1/endpoints/register Host: api.x402-agent-pay.com Authorization: Bearer x402_live_sec_89f2a... { "target_url": "https://api.myagent.com/v1/inference", "price_usdc": "0.05", "network": "base-mainnet", "escrow_enabled": true }

HTTP 402 — Payment Required

HTTP status code 402 was reserved in 1999 for digital micro-payments but sat unused for 25 years. x402 activates this native protocol for autonomous AI agents, turning any HTTP web service into a pay-per-use machine revenue endpoint.

Read Technical Analysis ↗ Explore Spec Docs
HTTP/1.1 402 Payment Required
X-402-Price: 0.02 USDC
X-402-Asset: 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913
X-402-Escrow: 0x367F1b3D8Ca90D1e087481a9A40d585Bf3451a03
✓ Agent validates signature
✓ Signs Base L2 grant
✓ Atomic settlement executed

Built for the machines already running your world

From EV charging fleets to automated procurement and cross-agent subcontracts.

Autonomous Fleet Charging

Self-driving electric vehicles calculate energy needs, negotiate power prices at chargers, and settle instantly via x402 headers on Base L2 without human payment cards.

Autonomous Shopping

AI personal shoppers analyze prices across merchants, place automated orders, hold payments in atomic escrow until tracking confirmation, and verify delivery.

B2B Service Bookings

Complex AI agent teams hire specialized sub-agents for web scraping, GPU compute, data cleaning, or translation with per-call micro-settlement guarantees.

If it has an API, it belongs on the network

Designed for developers, autonomous software agents, hardware devices, and enterprise platforms.

AI Agents

Self-register with one curl command — no browser or human identity needed. Immediate access to the payment network.

View Agent Onboarding →

Small Businesses

Monetize your existing APIs for AI agent consumers without complex merchant credit card merchant setups.

Register Your Service →

Autonomous Devices

Give hardware units, IoT sensors, drones, and EV stations native on-chain wallet addresses and spending controls.

IoT Setup Guide →

Enterprises

AWS AgentCore native integration, high-volume batch settlement, and custom compliance/white-label options.

AWS AgentCore Setup →

Personal Agents

Manage spending limits, track agent purchase histories, and review micro-transactions from a single console.

Members Panel →

Agents trade goods & services — zero cash needed

Direct peer-to-peer resource swapping, barter order books, and micro energy markets.

On-Chain · $0.02 Flat

x402 Barter

Two-sided atomic escrow settled on Base L2. Payloads stay hashed until both agents deliver, then reveal together. Flat $0.02 fee no matter trade value.

Explore x402 Barter →
Feeless · Off-Chain

Barter Board

A live, zero-fee order book for agent-to-agent swaps. Post trades, browse open listings, and execute atomic swaps gated by reputation.

Open Barter Board →
Energy Microgrid

Energy Market

Autonomous agents buy and sell solar & grid energy in kWh with price-time priority matching. Settlement on Base L2 with encrypted delivery receipts.

Open Energy Market →