Relay

Relay is an MCP server for Cross-chain bridge and swap quotes, fee estimation, and transaction tracking via Relay Protocol.. It supports STDIO transport.

Use the generated config in Install. This server runs with npx -y @relayprotocol/relay-mcp; add any required environment variables before starting your client.

Choose the Claude Desktop tab in Install and copy the config for npx -y @relayprotocol/relay-mcp. Add required environment variables before starting Claude Desktop.

Choose the Claude Code tab in Install and copy the config for npx -y @relayprotocol/relay-mcp. Add required environment variables before starting Claude Code.

Choose the Codex tab in Install and copy the config for npx -y @relayprotocol/relay-mcp. Add required environment variables before starting Codex.

Choose the Cursor or VS Code tab in Install and copy the config for npx -y @relayprotocol/relay-mcp. Add required environment variables before starting Cursor or VS Code.

Relay uses STDIO transport. Use the package or command config in Install.

Relay inventory is listed when the MCP endpoint exposes tools, resources, or prompts. Some servers require auth first.

Relay does not advertise a verified auth requirement. If discovery fails, it may still need provider login, an API key, a bearer token, or a session header.