About x402-mcp-server
x402-mcp-server is an MCP server published by AiAgentKarl in the Blockchain category: mCP server wrapping x402 DeFi data endpoints — AI agent discovery layer.
Six months or more without a commit doesn't mean the server is broken, but check the open issues before depending on it in production.
Install
uvx x402-mcp-serverpip install x402-mcp-serverThis server has no ConduID identity, so agent calls to it are not receipted. Pin the version you install and review the source before granting it credentials.
Tools (6)
create_payment_requestCreate a 402 payment request for a tool
Parameters not published.
get_payment_statusCheck payment status
Parameters not published.
get_price_listView all tool prices
Parameters not published.
get_revenueRevenue statistics
Parameters not published.
list_paymentsPayment history
Parameters not published.
verify_paymentVerify on-chain USDC payment
Parameters not published.
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README
x402 Payment Gateway MCP Server 💰
MCP Server that enables micropayments between AI agents using USDC on Solana. Based on the x402 protocol (HTTP 402 Payment Required).
What is x402?
x402 is a protocol that lets AI agents pay for services automatically. When an agent calls a premium tool, it gets a "402 Payment Required" response with payment instructions. The agent pays via blockchain, then gets access.
Features
- Payment Requests — Create x402-compatible payment requests for any tool
- On-Chain Verification — Verify USDC payments directly on Solana
- Tool Pricing — Set per-call prices for individual tools
- Revenue Tracking — Dashboard with total revenue, per-tool breakdown
- Payment History — Full audit trail of all transactions
Installation
pip install x402-mcp-server
Configuration
Set your merchant wallet in .env:
MERCHANT_WALLET=YourSolanaWalletAddress
SOLANA_RPC_URL=https://api.mainnet-beta.solana.com
Usage with Claude Code
{
"mcpServers": {
"x402": {
"command": "uvx",
"args": ["x402-mcp-server"],
"env": {
"MERCHANT_WALLET": "YourSolanaWalletAddress"
}
}
}
}
Tools
| Tool | Description |
|---|---|
create_payment_request |
Create a 402 payment request for a tool |
verify_payment |
Verify on-chain USDC payment |
get_payment_status |
Check payment status |
set_tool_price |
Set price for a tool |
get_price_list |
View all tool prices |
list_payments |
Payment history |
get_revenue |
Revenue statistics |
Flow
Agent A x402 Gateway Agent B (Service)
| | |
|-- "Use premium tool" ---->| |
| |-- 402 Payment Required ---->|
|<-- Payment instructions --| |
| | |
|-- USDC payment on-chain ->| |
| |-- verify_payment ---------->|
| |<-- verified ----------------|
|<-- Access granted --------| |
More MCP Servers by AiAgentKarl
| Category | Servers |
|---|---|
| 🔗 Blockchain | Solana |
| 🌍 Data | Weather · Germany · Agriculture · Space · Aviation · EU Companies |
| 🔒 Security | Cybersecurity · Policy Gateway · Audit Trail |
| 🤖 Agent Infra | Memory · Directory · Hub · Reputation |
| 🔬 Research | Academic · LLM Benchmark · Legal |
License
MIT
README copy captured when this server was indexed; it may lag the repository. The original is authoritative.