x402 payment wrapper for AI Agents and MCP Servers. USDC settlements on Base L2.
Connect Runs on your machine
claude mcp add m2mcent -e BASE_RPC_URL=<BASE_RPC_URL> -e RELAYER_PRIVATE_KEY=<RELAYER_PRIVATE_KEY> -e TREASURY_ADDRESS=<TREASURY_ADDRESS> -- npx -y [email protected]{
"mcpServers": {
"m2mcent": {
"command": "npx",
"args": [
"-y",
"[email protected]"
],
"env": {
"BASE_RPC_URL": "<BASE_RPC_URL>",
"RELAYER_PRIVATE_KEY": "<RELAYER_PRIVATE_KEY>",
"TREASURY_ADDRESS": "<TREASURY_ADDRESS>"
}
}
}
}{
"mcpServers": {
"m2mcent": {
"command": "npx",
"args": [
"-y",
"[email protected]"
],
"env": {
"BASE_RPC_URL": "<BASE_RPC_URL>",
"RELAYER_PRIVATE_KEY": "<RELAYER_PRIVATE_KEY>",
"TREASURY_ADDRESS": "<TREASURY_ADDRESS>"
}
}
}
}{
"servers": {
"m2mcent": {
"type": "stdio",
"command": "npx",
"args": [
"-y",
"[email protected]"
],
"env": {
"BASE_RPC_URL": "<BASE_RPC_URL>",
"RELAYER_PRIVATE_KEY": "<RELAYER_PRIVATE_KEY>",
"TREASURY_ADDRESS": "<TREASURY_ADDRESS>"
}
}
}
}Replace the values in angle brackets with your own. Keys stay on your machine; we never see them.
Tools
This server runs locally, so its tools are listed by your MCP client once it starts.
Environment variables
| Name | Description |
|---|---|
BASE_RPC_URLRequired | Base Mainnet RPC endpoint URL |
RELAYER_PRIVATE_KEYRequired, secret | Relayer wallet private key for on-chain settlement |
TREASURY_ADDRESSRequired | Treasury wallet address to receive payments |
Details
| Package | [email protected] (NPM, stdio) |
| First published | 16 Aug 2026 |
| Last updated | 16 Aug 2026 |
| Registry name | io.github.Evozim/m2mcent |
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