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mcp/harbor
LangChain

HTTP 428 precondition-required for LangChain

io.github.sadri-dridi/http-428

Meaning of HTTP 428.

client:LangChain transport:streamable-http tools:31

Install HTTP 428 precondition-required in LangChain

pip install langchain-mcp-adapters 

from langchain_mcp_adapters.client import MultiServerMCPClient

client = MultiServerMCPClient({
        "http-428": {
            "transport": "streamable_http",
            "url": "https://agent-observatory-sensor.nolimit-observatory.workers.dev/s/http-428/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 428 precondition-required in other clients

HTTP 428 precondition-required MCP server