x402-enhanced
Internet-native payments using the HTTP 402 Payment Required standard. Set up as a buyer to pay for API access, or as a seller to monetize your APIs.
Best for API monetizationWorks with GitHubHigh risk
⌘source
- author
@LeoYeAI- language
- Python
★2kstars
306forks
May 6, 2026
✦overview.md
Key Features
- ·Zero protocol fees
- ·Zero friction setup
- ·Instant stablecoin settlement
- ·Works with AI agents
- ·No accounts or KYC required
Use Cases
- →Monetize a weather API with per-request payments
- →Auto-pay for serverless AI agent services
- →Streaming data access with pay-per-call
Best for
- ✓API monetization
- ✓automated agent payments
Not ideal for
- !traditional subscription billing
- !high-latency environments
FAQs
name
x402
description
Internet-native payments using the HTTP 402 Payment Required standard. Set up as a buyer to pay for API access, or as a seller to monetize your APIs.
metadata:{"openclaw":{"emoji":"💸"}}
x402 Payment Protocol
x402 is an open, internet-native payment standard built around the HTTP 402 Payment Required status code. It enables programmatic payments between clients and servers without accounts, sessions, or credential management.
Key Benefits:
- Zero protocol fees (only blockchain network fees)
- Zero friction (no accounts or KYC required)
- Instant settlement via stablecoins
- Works with AI agents and automated systems
Documentation: https://docs.x402.org | GitHub: https://github.com/coinbase/x402
How x402 Works
- Client requests a resource from a server
- Server responds with
402 Payment Required+ payment instructions - Client signs and submits a payment payload
- Server verifies payment, optionally via a facilitator
- Server returns the requested resource
Environment Variables
For Buyers (Clients)
# EVM wallet private key (Ethereum/Base/Polygon)
EVM_PRIVATE_KEY=0x...
# Solana wallet private key (base58 encoded)
SVM_PRIVATE_KEY=...
# Target server URL
RESOURCE_SERVER_URL=http://localhost:4021
ENDPOINT_PATH=/weather
For Sellers (Servers)
# Your EVM wallet address to receive payments
$install
1-click copynpx skills add LeoYeAI/openclaw-master-skills --skill x402-enhancedSafety assessment
★
Clarity score
How clear and easy to understand the SKILL.md instructions are, rated from 1 to 5.
4/ 5
very goodClear and well structured, with only minor parts that might need a second read.
◎
Actionability score
How directly an agent can act on the SKILL.md instructions, rated from 1 to 5.
3/ 5
mediumPartially actionable with several concrete steps, but still missing important details.