What is the x402 protocol?
x402 is a standard for HTTP 402 Payment Required responses; Aifinpay agents automatically sign and pay these.
@AiFinPay
基本信息
Stripe for AI agents. Pay any HTTP API in stablecoins or native tokens on Polygon and Solana mainnet with one MCP call. Non-custodial, on-chain settlement, atomic 99/1 partner split. Five tools: payable_fetch, agent_address, agent_quote, pay_with_split, quote_split.
使用下面的配置,将此服务器添加到你的 MCP 客户端。
{
"mcpServers": {
"aifinpay": {
"command": "npx",
"args": [
"@aifinpay/mcp"
],
"env": {
"AIFINPAY_MAX_USD": "0.10",
"AIFINPAY_CHAIN": "auto"
}
}
}
}工具列表暂未提供
当前收录暂时没有可展示的工具列表,不代表服务没有工具。请查阅项目文档了解支持的能力。
点击上方按钮,在临时沙箱中运行此服务器并实时获取工具列表。
Aifinpay is a payment rail for autonomous AI agents that enables one-line payment to any x402-protected URL on Polygon or Solana mainnet. It is designed for developers building agentic systems who need non-custodial, on-chain settlement.
Install the Python or Node SDK via pip install aifinpay-agent --pre or npm install @aifinpay/agent@alpha. For Claude Desktop or Cursor, configure the MCP server with npx @aifinpay/mcp and optionally set AIFINPAY_AGENT_SECRET and AIFINPAY_MAX_USD environment variables.
agent.pay() for x402‑gated APIs.x402 is a standard for HTTP 402 Payment Required responses; Aifinpay agents automatically sign and pay these.
Yes, agents hold their own private keys and sign payments directly.
Polygon (mainnet) with a deployed contract suite, and Solana (

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