Call Square APIs for payments, orders, customers, inventory and more.
Setup
Choose your client, copy the config, then fill in any required environment variables.
claude mcp add square --env ACCESS_TOKEN='<ACCESS_TOKEN>' -- npx square-mcp-server start~/.codex/config.toml
[mcp_servers.square]
command = "npx"
args = ["square-mcp-server", "start"]
env = { ACCESS_TOKEN = "<ACCESS_TOKEN>" }
# codex mcp add square --env ACCESS_TOKEN='<ACCESS_TOKEN>' -- npx square-mcp-server start~/.cursor/mcp.json
{
"mcpServers": {
"square": {
"command": "npx",
"args": [
"square-mcp-server",
"start"
],
"env": {
"ACCESS_TOKEN": "<ACCESS_TOKEN>"
}
}
}
}.vscode/mcp.json
{
"servers": {
"square": {
"type": "stdio",
"command": "npx",
"args": [
"square-mcp-server",
"start"
],
"env": {
"ACCESS_TOKEN": "<ACCESS_TOKEN>"
}
}
}
}~/.gemini/settings.json
{
"mcpServers": {
"square": {
"command": "npx",
"args": [
"square-mcp-server",
"start"
],
"env": {
"ACCESS_TOKEN": "<ACCESS_TOKEN>"
}
}
}
}claude_desktop_config.json
{
"mcpServers": {
"square": {
"command": "npx",
"args": [
"square-mcp-server",
"start"
],
"env": {
"ACCESS_TOKEN": "<ACCESS_TOKEN>"
}
}
}
}.trae/mcp.json
{
"mcpServers": {
"square": {
"command": "npx",
"args": [
"square-mcp-server",
"start"
],
"env": {
"ACCESS_TOKEN": "<ACCESS_TOKEN>"
}
}
}
}Environment variables
ACCESS_TOKEN
Replace the placeholders with your own credentials and keep them out of version control.