Agent integration guide

Let your AI agent buy RWA data per call with USDC: $0.05 per authenticity check, database queries from $0.02. No account, no API key, no ETH needed (gas is sponsored by the facilitator).

Two layers: MCP lets agents discover and call tools (discovery); x402 makes them pay USDC before receiving data (settlement, Base mainnet). Neither requires registration - USDC in the wallet is enough.

pip install "mcp<2" "x402[evm]==2.25.0" web3, then:

import asyncio, json
from eth_account import Account
from mcp import ClientSession
from mcp.client.streamable_http import streamable_http_client
from x402 import x402Client
from x402.mechanisms.evm import EthAccountSigner
from x402.mechanisms.evm.exact import ExactEvmScheme
from x402.mcp import wrap_mcp_client_with_payment

class Adapter:  # x402 wrapper 与 mcp 1.x 的签名对齐
    def __init__(self, s): self._s = s
    async def call_tool(self, params, **kw):
        return await self._s.call_tool(name=params["name"],
            arguments=params.get("arguments") or {},
            meta=params.get("_meta"), **kw)
    def __getattr__(self, n): return getattr(self._s, n)

async def main():
    account = Account.from_key("0x你的买家私钥")   # 钱包里只需 Base 主网 USDC
    xc = x402Client()
    xc.register("eip155:8453", ExactEvmScheme(EthAccountSigner(account)))
    async with streamable_http_client("https://365rwa.vip/mcp") as (r, w, _):
        async with ClientSession(r, w) as s:
            await s.initialize()
            mcp = wrap_mcp_client_with_payment(Adapter(s), xc, auto_payment=True,
                                               on_payment_requested=lambda ctx: True)
            res = await mcp.call_tool("verify_rwa_project", {"name": "BUIDL"})
            print(res.content[0].text)   # 五级判定 + 证据

asyncio.run(main())

Give Claude or your agent framework an x402 skill / wallet plugin (e.g. Coinbase AgentKit or the open-source x402 bazaar skill), then add https://365rwa.vip/mcp to its MCP server list. The client signs payment automatically on a 402. Note: a vanilla MCP connector cannot pay - x402 capability is required.

# 零成本验证：不付款直接调付费工具，应返回 402 支付挑战
# 先 initialize 拿 mcp-session-id，再带会话调 tools/call：
curl -s https://365rwa.vip/mcp \
  -H "Content-Type: application/json" \
  -H "Accept: application/json, text/event-stream" \
  -d '{"jsonrpc":"2.0","id":1,"method":"initialize","params":{"protocolVersion":"2025-06-18","capabilities":{},"clientInfo":{"name":"probe","version":"1"}}}'
# 402 挑战里应看到四要素：
#   network = eip155:8453（Base 主网）
#   asset   = 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913（Circle 官方 USDC）
#   payTo   = 0x230cd9cd33589bcf33cd32e5aa4f9e0c3994a63b
#   amount  = 50000（即 $0.05）

Data is CC BY 4.0 - cite "Source: 365rwa.vip" with the verification date. Nothing here is investment advice.