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mcp/harbor
LangChain

21st.dev for LangChain

dev.21st/mcp

Find UI components and themes, retrieve code, and generate with hosted 21st AI when enabled.

client:LangChain transport:streamable-http

Install 21st.dev in LangChain

pip install langchain-mcp-adapters 

from langchain_mcp_adapters.client import MultiServerMCPClient

client = MultiServerMCPClient({
        "mcp": {
            "transport": "streamable_http",
            "url": "https://21st.dev/api/mcp",
        }
})

tools = await client.get_tools()

get_tools() returns the server's tools as LangChain tools, ready for an agent. LangChain docs

21st.dev in other clients

21st.dev MCP server