MCP Circle runs on your own machine — the client starts it, so there is no endpoint to ping. 63 installs a week from npm. Last commit 27 Sep 2026.
MCP server for Circle — USDC payments, wallets, payouts, transfers
Nothing serious here today
Today is the operative word: we check MCP Circle every 15 minutes and re-read its code on every release. Watch it and you find out the day that stops being true.
Connect this server
This server runs on your own machine — install it with the package manager and the client starts it for you. Package name taken from the official registry entry.
claude mcp add mcp-circle -e 'CIRCLE_API_KEY=<CIRCLE_API_KEY>' -- npx -y @codespar/mcp-circle{
"mcpServers": {
"mcp-circle": {
"command": "npx",
"args": [
"-y",
"@codespar/mcp-circle"
],
"env": {
"CIRCLE_API_KEY": "<CIRCLE_API_KEY>"
}
}
}
}[mcp_servers.mcp-circle]
command = "npx"
args = ["-y", "@codespar/mcp-circle"]
env = { CIRCLE_API_KEY = "<CIRCLE_API_KEY>" }{
"mcpServers": {
"mcp-circle": {
"command": "npx",
"args": [
"-y",
"@codespar/mcp-circle"
],
"env": {
"CIRCLE_API_KEY": "<CIRCLE_API_KEY>"
}
}
}
}{
"servers": {
"mcp-circle": {
"type": "stdio",
"command": "npx",
"args": [
"-y",
"@codespar/mcp-circle"
],
"env": {
"CIRCLE_API_KEY": "<CIRCLE_API_KEY>"
}
}
}
}Put your own value in place of
<CIRCLE_API_KEY> (API key for circle).
The author’s registry entry marks it as required.
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MCP Circle — questions
Answers built from our own checks of this server.