Cross-chain bridge and swap quotes, fee estimation, and transaction tracking via Relay Protocol.
Setup
Choose your client, copy the config, then fill in any required environment variables.
claude mcp add relay-relayprotocol --env RELAY_API_KEY='<RELAY_API_KEY>' -- npx -y @relayprotocol/relay-mcp~/.codex/config.toml
[mcp_servers.relay-relayprotocol]
command = "npx"
args = ["-y", "@relayprotocol/relay-mcp"]
env = { RELAY_API_KEY = "<RELAY_API_KEY>" }
# codex mcp add relay-relayprotocol --env RELAY_API_KEY='<RELAY_API_KEY>' -- npx -y @relayprotocol/relay-mcp~/.cursor/mcp.json
{
"mcpServers": {
"relay-relayprotocol": {
"command": "npx",
"args": [
"-y",
"@relayprotocol/relay-mcp"
],
"env": {
"RELAY_API_KEY": "<RELAY_API_KEY>"
}
}
}
}.vscode/mcp.json
{
"servers": {
"relay-relayprotocol": {
"type": "stdio",
"command": "npx",
"args": [
"-y",
"@relayprotocol/relay-mcp"
],
"env": {
"RELAY_API_KEY": "<RELAY_API_KEY>"
}
}
}
}~/.gemini/settings.json
{
"mcpServers": {
"relay-relayprotocol": {
"command": "npx",
"args": [
"-y",
"@relayprotocol/relay-mcp"
],
"env": {
"RELAY_API_KEY": "<RELAY_API_KEY>"
}
}
}
}claude_desktop_config.json
{
"mcpServers": {
"relay-relayprotocol": {
"command": "npx",
"args": [
"-y",
"@relayprotocol/relay-mcp"
],
"env": {
"RELAY_API_KEY": "<RELAY_API_KEY>"
}
}
}
}.trae/mcp.json
{
"mcpServers": {
"relay-relayprotocol": {
"command": "npx",
"args": [
"-y",
"@relayprotocol/relay-mcp"
],
"env": {
"RELAY_API_KEY": "<RELAY_API_KEY>"
}
}
}
}Environment variables
RELAY_API_KEY
Replace the placeholders with your own credentials and keep them out of version control.