2s Io runs on your own machine — the client starts it, so there is no endpoint to ping. 708 installs a week from npm. Last commit 24 Oct 2026.
575+ agent tools: data, AI gateway, storage/queues/watchers. x402 USDC, no keys, usage billing.
Nothing serious here today
Today is the operative word: we check 2s Io 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 -e 'EVM_PRIVATE_KEY=<EVM_PRIVATE_KEY>' -- npx -y @2sio/mcp{
"mcpServers": {
"mcp": {
"command": "npx",
"args": [
"-y",
"@2sio/mcp"
],
"env": {
"EVM_PRIVATE_KEY": "<EVM_PRIVATE_KEY>"
}
}
}
}[mcp_servers.mcp]
command = "npx"
args = ["-y", "@2sio/mcp"]
env = { EVM_PRIVATE_KEY = "<EVM_PRIVATE_KEY>" }{
"mcpServers": {
"mcp": {
"command": "npx",
"args": [
"-y",
"@2sio/mcp"
],
"env": {
"EVM_PRIVATE_KEY": "<EVM_PRIVATE_KEY>"
}
}
}
}{
"servers": {
"mcp": {
"type": "stdio",
"command": "npx",
"args": [
"-y",
"@2sio/mcp"
],
"env": {
"EVM_PRIVATE_KEY": "<EVM_PRIVATE_KEY>"
}
}
}
}Put your own value in place of
<EVM_PRIVATE_KEY> (Hex-encoded EVM private key (0x-prefixed) used by the SDK to sign x402 EIP-3009 payment authorizations. Funds USDC on Base).
The author’s registry entry marks it as required.
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2s Io — questions
Answers built from our own checks of this server.