SpendPreflight for LangChain
io.github.spendpreflight/spendpreflight
Preflight x402 payments. Base ERC-8004 agent #1151628; wallet binding verified Nov 3, 2026.
client:LangChain
transport:streamable-http
tools:17
Install SpendPreflight in LangChain
pip install langchain-mcp-adapters
from langchain_mcp_adapters.client import MultiServerMCPClient
client = MultiServerMCPClient({
"spendpreflight": {
"transport": "streamable_http",
"url": "https://api.spendpreflight.com/mcp",
}
})
tools = await client.get_tools()
get_tools() returns the server's tools as LangChain tools, ready for an agent. LangChain docs