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mcp/harbor
LangChain

s3 for LangChain

com.pulsemcp/s3

MCP server for AWS S3 with fine-grained tool control and S3-compatible endpoint support.

client:LangChain transport:stdio runtime:npm

Install s3 in LangChain

pip install langchain-mcp-adapters 

from langchain_mcp_adapters.client import MultiServerMCPClient

client = MultiServerMCPClient({
        "s3": {
            "transport": "stdio",
            "command": "npx",
            "args": ["-y", "s3-aws-mcp-server"],
        }
})

tools = await client.get_tools()

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

s3 in other clients

s3 MCP server