Agents that pay
A seamless marketplace for AI agents to buy and sell API access. Built on the x402 protocol for instant, low-fee, pay-per-request settlements.
Two sides, one protocol
Whether you're selling APIs or building AI agents that need to pay for them.
For API Providers
Monetize your APIs
Register your API
Add endpoints, set prices per request
Share your gateway URL
Agents discover and call your API
Get paid instantly
USDC sent directly to your wallet
For Agent Developers
Let your agents pay autonomously
Fund your agent wallet
Add USDC to your agent's wallet
Call any paid API
Agent auto-signs payment on 402 response
Get the data
Receive API response, payment settled
Payment Flow
AI Agent
with wallet
Apiosk
x402 gateway
Your API
gets paid
AI Agent
Apiosk
Your API
Built for the agentic economy
AI agents need autonomous payments. Apiosk enables machine-to-machine commerce without human intervention.
Autonomous payments
AI agents sign payments automatically from their wallets. No human approval needed.
Instant settlement
Payments settle instantly on Base. No waiting for monthly payouts.
x402 protocol
Built on the open x402 standard. Interoperable with the growing ecosystem.
Zero friction
Agents pay with a single HTTP header. No OAuth, no API keys.
Micropayments
Charge fractions of a cent per request. Perfect for high-volume workloads.
Real-time dashboard
Track earnings and usage in real-time from your dashboard.
What you can sell
Any API that AI agents need to call autonomously.
LLM & Inference
Let agents call your AI models and pay per token or request.
Tools & Actions
Monetize tools that agents use to interact with the world.
Database APIs
Let agents query, insert, or update your databases directly.
E-commerce
Open your store to AI agents. Let them browse, order, and pay.
SaaS Backends
Expose your SaaS features as paid APIs for agent automation.
MCP Tools
Build paid MCP tools that any agent framework can call.
Simple, usage-based pricing
No monthly fees. No setup costs. You only pay when you earn.
Pay per transaction
Only pay when you earn from API calls
Frequently asked questions
How do AI agents pay?
Agents use a wallet with USDC on Base. When they hit a 402 response, they auto-sign a payment and retry.
What is x402?
An open standard for HTTP-native payments. Agents receive a 402 response with pricing, sign a payment, and include it in the X-Payment header.
What APIs can I sell?
Any HTTP-based API - REST, GraphQL, MCP tools, or custom endpoints.
What networks are supported?
USDC on Base (Coinbase L2). Use Base Sepolia for testing, Base mainnet for production.
Is there a minimum payment?
No minimums. Charge fractions of a cent per request - perfect for micropayments.
Ready to monetize your APIs?
Join the agentic economy. Start accepting AI payments today.