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Relay

io.github.reservoirprotocol/relay-mcp · v0.1.0

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

Connect Runs on your machine

Terminal
claude mcp add relay-mcp -e RELAY_API_KEY=<RELAY_API_KEY> -e RELAY_API_URL=<RELAY_API_URL> -- npx -y @relayprotocol/[email protected]
claude_desktop_config.json
{
  "mcpServers": {
    "relay-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "@relayprotocol/[email protected]"
      ],
      "env": {
        "RELAY_API_KEY": "<RELAY_API_KEY>",
        "RELAY_API_URL": "<RELAY_API_URL>"
      }
    }
  }
}
~/.cursor/mcp.json
{
  "mcpServers": {
    "relay-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "@relayprotocol/[email protected]"
      ],
      "env": {
        "RELAY_API_KEY": "<RELAY_API_KEY>",
        "RELAY_API_URL": "<RELAY_API_URL>"
      }
    }
  }
}
.vscode/mcp.json
{
  "servers": {
    "relay-mcp": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "@relayprotocol/[email protected]"
      ],
      "env": {
        "RELAY_API_KEY": "<RELAY_API_KEY>",
        "RELAY_API_URL": "<RELAY_API_URL>"
      }
    }
  }
}

Replace the values in angle brackets with your own. Keys stay on your machine; we never see them.

Tools

This server runs locally, so its tools are listed by your MCP client once it starts.

Environment variables

NameDescription
RELAY_API_KEY
Optional, secret
Optional API key for higher rate limits
RELAY_API_URL
Optional
Relay API base URL (default: https://api.relay.link)

Details

Package@relayprotocol/[email protected] (NPM, stdio)
First published10 Mar 2026
Last updated10 Mar 2026
Registry nameio.github.reservoirprotocol/relay-mcp

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