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mcp/harbor
LangChain

Exactlane Preflight for LangChain

dev.exactlane/preflight

Caller-specific static MCP capability fit evidence. No live probing; caller owns the decision.

client:LangChain transport:streamable-http

Install Exactlane Preflight in LangChain

pip install langchain-mcp-adapters 

from langchain_mcp_adapters.client import MultiServerMCPClient

client = MultiServerMCPClient({
        "preflight": {
            "transport": "streamable_http",
            "url": "https://exactlane.dev/mcp",
        }
})

tools = await client.get_tools()

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

Exactlane Preflight in other clients

Exactlane Preflight MCP server