AI agent access to Asian crypto markets. Korean exchange routing and x402 paid APIs.
Setup
Choose your client, copy the config, then fill in any required environment variables.
Local
claude mcp add crossfin --env EVM_PRIVATE_KEY='<EVM_PRIVATE_KEY>' -- npx -y crossfin-mcp~/.codex/config.toml
[mcp_servers.crossfin]
command = "npx"
args = ["-y", "crossfin-mcp"]
env = { EVM_PRIVATE_KEY = "<EVM_PRIVATE_KEY>" }
# codex mcp add crossfin --env EVM_PRIVATE_KEY='<EVM_PRIVATE_KEY>' -- npx -y crossfin-mcp~/.cursor/mcp.json
{
"mcpServers": {
"crossfin": {
"command": "npx",
"args": [
"-y",
"crossfin-mcp"
],
"env": {
"EVM_PRIVATE_KEY": "<EVM_PRIVATE_KEY>"
}
}
}
}.vscode/mcp.json
{
"servers": {
"crossfin": {
"type": "stdio",
"command": "npx",
"args": [
"-y",
"crossfin-mcp"
],
"env": {
"EVM_PRIVATE_KEY": "<EVM_PRIVATE_KEY>"
}
}
}
}~/.gemini/settings.json
{
"mcpServers": {
"crossfin": {
"command": "npx",
"args": [
"-y",
"crossfin-mcp"
],
"env": {
"EVM_PRIVATE_KEY": "<EVM_PRIVATE_KEY>"
}
}
}
}claude_desktop_config.json
{
"mcpServers": {
"crossfin": {
"command": "npx",
"args": [
"-y",
"crossfin-mcp"
],
"env": {
"EVM_PRIVATE_KEY": "<EVM_PRIVATE_KEY>"
}
}
}
}.trae/mcp.json
{
"mcpServers": {
"crossfin": {
"command": "npx",
"args": [
"-y",
"crossfin-mcp"
],
"env": {
"EVM_PRIVATE_KEY": "<EVM_PRIVATE_KEY>"
}
}
}
}Remote
claude mcp add --transport http crossfin https://crossfin.dev/api/mcp~/.codex/config.toml
[mcp_servers.crossfin]
url = "https://crossfin.dev/api/mcp"
# codex mcp add crossfin --url https://crossfin.dev/api/mcp~/.cursor/mcp.json
{
"mcpServers": {
"crossfin": {
"url": "https://crossfin.dev/api/mcp"
}
}
}.vscode/mcp.json
{
"servers": {
"crossfin": {
"type": "http",
"url": "https://crossfin.dev/api/mcp"
}
}
}~/.gemini/settings.json
{
"mcpServers": {
"crossfin": {
"httpUrl": "https://crossfin.dev/api/mcp"
}
}
}claude_desktop_config.json · Customize › Connectors › Add custom connector
{
"mcpServers": {
"crossfin": {
"command": "npx",
"args": [
"-y",
"mcp-remote",
"https://crossfin.dev/api/mcp"
]
}
}
}.trae/mcp.json
{
"mcpServers": {
"crossfin": {
"url": "https://crossfin.dev/api/mcp"
}
}
}Environment variables
EVM_PRIVATE_KEY
Replace the placeholders with your own credentials and keep them out of version control.