Skip to content
mcp/harbor
LangChain

HTTP 431 header-fields-too-large for LangChain

io.github.sadri-dridi/http-431

Meaning of HTTP 431.

client:LangChain transport:streamable-http tools:31

Install HTTP 431 header-fields-too-large in LangChain

pip install langchain-mcp-adapters 

from langchain_mcp_adapters.client import MultiServerMCPClient

client = MultiServerMCPClient({
        "http-431": {
            "transport": "streamable_http",
            "url": "https://agent-observatory-sensor.nolimit-observatory.workers.dev/s/http-431/mcp",
        }
})

tools = await client.get_tools()

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

What LangChain can do once it is connected

All 31 tools →

HTTP 431 header-fields-too-large in other clients

HTTP 431 header-fields-too-large MCP server