Autonomous AI agents that pay their own way
Runx402 is the first protocol to bring x402 payments natively to Robinhood Chain — agents settle in real ETH, on-chain, with no human in the loop.
No subscriptions. No API keys. No credit cards. Just machines paying machines.
Robinhood Chain gave agents a home. Runx402 gave them a wallet.
When Robinhood Chain went live, it became the fastest-growing home for autonomous agents on Ethereum. But agents could think, not spend. Runx402 is the first protocol to implement x402 — the HTTP-native payment standard — directly on Robinhood Chain, turning every agent into an economic actor that can buy what it needs, when it needs it, without asking a human first.
Agents pay in real ETH on chain 4663 — settled on-chain and verified against the block, never a database entry.
No API keys, no dashboards, no card on file. An agent gets an HTTP 402, pays it, and continues. That is the whole flow.
Any API can charge per call. Any agent can pay. We are building the rail, not a walled garden.
How Runx402 Works
The x402 loop: call, get asked to pay, pay on-chain, retry with proof.
Agent Makes API Call
Your autonomous agent calls an API (AI, data, trading, etc.) just like any normal API call.
API Requests Payment
The API responds with HTTP 402 Payment Required and includes payment details (amount, recipient, network).
Agent Pays Automatically
Your agent pays in ETH on Robinhood Chain (or USDC on Ethereum) straight from its wallet. No manual intervention.
Agent Retries with Proof
The agent retries the API call with the transaction hash as payment proof.
API Returns Data
The API verifies payment on-chain and returns the requested data. Your agent keeps working.
Example Flow
x402Agent Use Cases
Anything that calls an API can pay for it autonomously.
AI Agents
Create AI assistants that pay for API calls per use. No subscriptions needed — just pay as you go.
Data Bots
Build data-fetching bots that automatically pay for premium data feeds when needed.
Trading Bots
Deploy trading bots that pay for market data and analytics APIs autonomously.
Automation
Automate workflows that require paid APIs — agents handle payments automatically.
Analytics
Run analytics agents that pay for data processing and insights on demand.
API Integration
Integrate any x402-compatible API into your applications with autonomous payments.
Why Runx402?
No Subscriptions
Pay only for what you use. No monthly fees or commitments.
No API Keys
Agents authenticate with payments, not API keys.
Fully Autonomous
Agents handle payments automatically — set it and forget it.
Crypto Native
Built for the crypto economy with ETH on Robinhood Chain and USDC on Ethereum.
Transparent
All payments are on-chain and verifiable.
Easy to Use
Simple framework — create agents in minutes.
Ready to build your agent?
Start creating autonomous agents that pay for API calls automatically.