What is x402 payment protocol?

x402 is a payment protocol built by Stripe and Coinbase that enables AI agents to pay for API requests directly with cryptocurrency. It allows seamless machine-to-machine payments without API keys or accounts.

How do AI agents pay for APIs with Apiosk?

AI agents pay per API request using USDC on the Base blockchain through the x402 protocol. No API keys, accounts, or subscriptions are needed - agents simply pay and call the API endpoint.

What is an x402 payment gateway?

An x402 payment gateway like Apiosk processes payments from AI agents to APIs using the x402 protocol. It handles payment verification, settlement, and routing so API providers can monetize their services with autonomous agent payments.

How do I list my API on Apiosk?

Import your OpenAPI spec or paste a GitHub URL in the Apiosk dashboard. The platform automatically detects endpoints, configures x402 pricing, and deploys them. No backend changes required - you can go live in under 5 minutes.

Software will soon pay for software.

Payment infrastructure for autonomous software

Per-request payments for software, services, and agents — no accounts, no API keys, no subscriptions.

smart_toyAGENT

hubAPIOSK

x402

cloudAPI

$0.001

MIN PAYMENT

<100ms

SETTLEMENT

USDC

CURRENCY

LIVE

STATUS

Get started in one command

Install Skills

Agent Integrations

Access APIs for data, logic, and compute via skills.sh

npx skills add obcraft/apiosk-skill --skill apiosk-gateway

check_circleNo API keys required
check_circlePay per request ($0.001-0.10)
check_circleWeather, prices, news, code execution, PDF gen + more

verified_userLive security audits on skills.sh

View on skills.sharrow_outward View on GitHubarrow_outward

For Developers

Monetize your API in 30 seconds via skills.sh

npx skills add obcraft/apiosk-publish-skill --skill apiosk-publish

check_circleRegister any endpoint
check_circleSet your price per request
check_circleInstant settlement to your wallet
check_circleAuto health check & go live

verified_userLive security audits on skills.sh

View on skills.sharrow_outward View on GitHubarrow_outward

Instant Integration

Go live in 10 seconds with a prepaid wallet

Create your prepaid wallet in dashboard, then copy your connection string and paste it into your own agents for instant Apiosk ecosystem integration.

Connection String

Login required to view your connection string

Authentication required. Login opens dashboard where your prepaid wallet and connection string are available.

Open Dashboardarrow_outward

Monetization Surface

Monetize more than APIs

Apiosk supports multiple listing types. Start with APIs, then expand into skills, datasets, products, services, and connectors.

API

Monetize a REST API endpoint with x402 pay-per-call pricing.

Skill

Sell an AI agent tool or MCP-style endpoint.

Product

Publish digital downloads or files behind instant payments.

Dataset

Offer structured data access with paid queries.

Service

Expose webhooks and automation relays as paid actions.

Connector

Monetize platform integrations like Slack, Notion, and more.

Agent integrations

Works with every agent

Drop-in integrations for the biggest agent frameworks. Your agents pay automatically — no API keys, no setup.

OpenClaw

Native integration for autonomous agents

Auto wallet management
Batch API calls
Workflow orchestration

github.com/Apiosk/openclaw-apioskarrow_outward

AutoGPT

Plug-and-play for AutoGPT agents

No config needed
Auto payment
15+ APIs ready

github.com/Apiosk/autogpt-apioskarrow_outward

LangChain

LLM-powered agent integration

Agents SDK
Tools wrapper
Streaming support

github.com/Apiosk/langchain-apioskarrow_outward

Agent SDK

JavaScript & Python SDKs

TypeScript SDK
Python SDK
Auto-retry & fallback

github.com/Apiosk/apiosk-agent-sdkarrow_outward

One-click embed:npx apiosk-agent init

New Feature

On-chain referral rewards are live

Referrers now earn $APIOSK rewards through our verified Base distributor contract while x402 settlement stays unchanged for pay-per-call API payments.

Open Referrals Dashboardarrow_outward View Verified Contractarrow_outward

Live Contract Details

Distributor: 0xa86C9fD045C4cAd672E336e4545142D0A8966Ef5

Token: 0xb9823f9080e6d9618a379ea495dc3f7e3a51cc52

Status: verified, owner and operator set, contract unpaused

Featured Token Links

Trade APIOSK on Flauncharrow_outward Open MoltLaunch Agentarrow_outward Open Referralsarrow_outward

5-Minute Setup // 01

5-Minute Setup

Import your OpenAPI spec or paste a GitHub URL. Apiosk detects your endpoints, configures x402 payment pricing, and deploys them behind the payment gateway. Zero backend changes.

Read Docsarrow_outward

account_balance_wallet

dns

Agent Payment Ready // 02

Agent Payment Ready

AI agents discover your APIs, datasets, services, and digital resources, pay per request with USDC using x402, and get instant access. No API keys, no OAuth, no accounts. Built for autonomous agent payments in the machine economy.

View Use Casesarrow_outward

smart_toy

Instant Revenue // 03

Instant Revenue

Every request, download, or access is an x402 payment. Real-time settlement on Base, Ethereum, Polygon, or Arbitrum. You earn per usage with micropayments — no invoicing, no billing cycles.

Get Startedarrow_outward

verified_user

Explore listing types

APIs are just the start. Monetize tools, files, datasets, services, and connectors with the same payment flow.

Explore All Listingsarrow_outward Create A Listingarrow_outward

Platform

Join the
Machine
Economy

Built for software that decides, pays, and acts on its own with programmable pay-per-call flows.

Get Started View Docs

smart_toy

AI Agents & Builders

Cost-aware, autonomous, per-task economics with x402-native payments.

code

Indie API Developers

Simple pay-per-call monetization with no subscriptions or lock-in contracts.

business_center

Internal & B2B Teams

Usage control, abuse protection, and finance visibility for production workloads.

Core Capabilities

schema

OpenAPI Import

Paste schema URLs or repos and launch monetized endpoints in minutes.

toll

USDC on Base

HTTP 402 + x402 flow with instant payment verification in each request.

lock

Abuse Controls

Per-endpoint pricing, rate controls, and policy checks for safe scaling.

query_stats

Provider Analytics

Track volume, revenue, and usage patterns from one dashboard.

Learn more

Protocol Specs

GET /v1/compute/process HTTP/1.1
Host: api.provider.com
X-Payment: [Base64-encoded x402 payment proof]
Content-Type: application/json

The x402 payment header encapsulates EIP-712 signed authorization directly into the HTTP request, enabling sub-millisecond validation by the gateway node.