Dutyfinch for LangChain
dev.workers.cybermax-tools.cybermax/dutyfinch
US tariff API + MCP: HTS duty rates, Section 301 lists. Keys $19/mo; 50 free calls a day.
client:LangChain
transport:streamable-http
tools:4
Install Dutyfinch in LangChain
pip install langchain-mcp-adapters
from langchain_mcp_adapters.client import MultiServerMCPClient
client = MultiServerMCPClient({
"dutyfinch": {
"transport": "streamable_http",
"url": "https://dutyfinch.cybermaxtools.com/mcp?via=mcp-registry",
}
})
tools = await client.get_tools()
get_tools() returns the server's tools as LangChain tools, ready for an agent. LangChain docs