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.

REF_ID: APIOSK_REV_2026

Monetize
Any
API.

Import your OpenAPI spec. Set a price. AI agents pay per request with x402. No API keys, no accounts, no backend changes.

laptop_macCLIENT

Sends request

securityAPIOSK GATEWAY

Validates payment

$0.001

dnsAPI PROVIDER

Returns data

OLD WAYAPI_KEY: "sk-..."

NEW WAYPAY_PER_CALL

verifiedAvailable on ClawHub

smart_toyFor Agents

clawhub install apiosk

terminalFor Developers

clawhub install apiosk-publish

GET STARTED IN ONE COMMAND

CLAWHUB SKILLS

For Agents

Access APIs for data, logic, and compute

clawhub install apiosk

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

trending_up90+ installs

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View on ClawHubarrow_outward

For Developers

Monetize your API in 30 seconds

clawhub install apiosk-publish

check_circleRegister any endpoint
check_circleSet your price per request
check_circleInstant settlement on-chain
check_circleAuto health check & go live

View on ClawHubarrow_outward Use Dashboard UIarrow_outward

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/obcraft/openclaw-apioskarrow_outward

AutoGPT

Plug-and-play for AutoGPT agents

No config needed
Auto payment
15+ APIs ready

github.com/obcraft/autogpt-apioskarrow_outward

LangChain

LLM-powered agent integration

Agents SDK
Tools wrapper
Streaming support

github.com/obcraft/langchain-apioskarrow_outward

Agent SDK

JavaScript & Python SDKs

TypeScript SDK
Python SDK
Auto-retry & fallback

github.com/obcraft/apiosk-agent-sdkarrow_outward

One-click embed:npx apiosk-agent init

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 API, pay per request with USDC using x402, and get data back. No API keys, no OAuth, no accounts. Built for autonomous agent payments in the machine economy.

View Use Casesarrow_outward

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Instant Revenue // 03

Instant Revenue

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

Get Startedarrow_outward

verified_user

Explore APIs

Start building immediately with our curated APIs. No signup required - just pay per call with USDC on Base.

Explore All APIs List your own API's

INFRASTRUCTURE

Platform

public

5 Networks

Multi-chain Ready

Base, Ethereum, Polygon, and Arbitrum live.

toll

Live

Expanded Tokens

USDC, USDT, DAI with automatic decimal handling.

sync

Integration

Github Import

Auto-discover API endpoints from your repo.

schema

Live

API by Schema

Upload OpenAPI schema, get pay-per-call endpoints.

JOIN THE
MACHINE
ECONOMY

Built for software that decides, pays, and acts on its own.

smart_toy

AI Agents & Builders

Cost-aware, autonomous, per-task economics.

code

Indie API Developers

Simple pay-per-call monetization, no subscriptions or contracts.

business_center

Internal & B2B Teams

Cost control, abuse prevention, FinOps visibility.

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.

Monetize Any API.