Base Tx Preflight for LangChain
com.madebydevx.preflight/preflight
Simulate a Base tx before signing: revert reason, gas limit, full fee in ETH/USD. Paid x402.
client:LangChain
transport:streamable-http
tools:2
Install Base Tx Preflight in LangChain
pip install langchain-mcp-adapters
from langchain_mcp_adapters.client import MultiServerMCPClient
client = MultiServerMCPClient({
"preflight": {
"transport": "streamable_http",
"url": "https://preflight.madebydevx.com/mcp",
}
})
tools = await client.get_tools()
get_tools() returns the server's tools as LangChain tools, ready for an agent. LangChain docs