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mcp/harbor
LangChain

Agent Preflight for LangChain

com.agent-preflight/agent-preflight

Budgeted agent preflight: allow|block|reuse|defer|advise. Never executes destination tools. Free MCP

client:LangChain transport:streamable-http tools:2

Install Agent Preflight in LangChain

pip install langchain-mcp-adapters 

from langchain_mcp_adapters.client import MultiServerMCPClient

client = MultiServerMCPClient({
        "agent-preflight": {
            "transport": "streamable_http",
            "url": "https://api.agent-preflight.com/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

Agent Preflight in other clients

Agent Preflight MCP server