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mcp/harbor
LangChain

substrate browser for LangChain

io.github.manuelinuxkr/substrate-browser

Token-first headless browser for AIs. Extracts a tiny semantic graph, cutting HTML bloat by 95%.

client:LangChain transport:stdio runtime:npm

Install substrate browser in LangChain

pip install langchain-mcp-adapters 

from langchain_mcp_adapters.client import MultiServerMCPClient

client = MultiServerMCPClient({
        "substrate-browser": {
            "transport": "stdio",
            "command": "npx",
            "args": ["-y", "substrate-browser"],
        }
})

tools = await client.get_tools()

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

substrate browser in other clients

substrate browser MCP server