OFAC Wallet Screen, DNS & Email Auth (x402) for LangChain
dev.workers.sdnscreen.sdn-screen-x402/agent-preflight
Pay-per-call ($0.01 USDC, Base, x402): OFAC SDN wallet screen, DNS lookup, SPF/DMARC/DKIM check.
client:LangChain
transport:streamable-http
tools:3
Install OFAC Wallet Screen, DNS & Email Auth (x402) in LangChain
pip install langchain-mcp-adapters
from langchain_mcp_adapters.client import MultiServerMCPClient
client = MultiServerMCPClient({
"agent-preflight": {
"transport": "streamable_http",
"url": "https://sdn-screen-x402.sdnscreen.workers.dev/mcp",
}
})
tools = await client.get_tools()
get_tools() returns the server's tools as LangChain tools, ready for an agent. LangChain docs