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LangChain

Relay for LangChain

io.github.reservoirprotocol/relay-mcp

Cross-chain bridge and swap quotes, fee estimation, and transaction tracking via Relay Protocol.

client:LangChain transport:stdio runtime:npm

Install Relay in LangChain

pip install langchain-mcp-adapters

from langchain_mcp_adapters.client import MultiServerMCPClient

client = MultiServerMCPClient({
        "relay-mcp": {
            "transport": "stdio",
            "command": "npx",
            "args": ["-y", "@relayprotocol/relay-mcp"],
        }
})

tools = await client.get_tools()

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

Relay in other clients