Local MCP server that signs x402 USDC payments (Solana, EVM) to buy PrivadoVPN access
Connect Runs on your machine
claude mcp add x402-mcp -e SOLANA_PRIVATE_KEY=<SOLANA_PRIVATE_KEY> -e EVM_PRIVATE_KEY=<EVM_PRIVATE_KEY> -e PREFERRED_NETWORK=<PREFERRED_NETWORK> -e X402_BASE_URL=<X402_BASE_URL> -e SOLANA_RPC_URL=<SOLANA_RPC_URL> -e EVM_RPC_URL=<EVM_RPC_URL> -- npx -y @privadovpn/[email protected]{
"mcpServers": {
"x402-mcp": {
"command": "npx",
"args": [
"-y",
"@privadovpn/[email protected]"
],
"env": {
"SOLANA_PRIVATE_KEY": "<SOLANA_PRIVATE_KEY>",
"EVM_PRIVATE_KEY": "<EVM_PRIVATE_KEY>",
"PREFERRED_NETWORK": "<PREFERRED_NETWORK>",
"X402_BASE_URL": "<X402_BASE_URL>",
"SOLANA_RPC_URL": "<SOLANA_RPC_URL>",
"EVM_RPC_URL": "<EVM_RPC_URL>"
}
}
}
}{
"mcpServers": {
"x402-mcp": {
"command": "npx",
"args": [
"-y",
"@privadovpn/[email protected]"
],
"env": {
"SOLANA_PRIVATE_KEY": "<SOLANA_PRIVATE_KEY>",
"EVM_PRIVATE_KEY": "<EVM_PRIVATE_KEY>",
"PREFERRED_NETWORK": "<PREFERRED_NETWORK>",
"X402_BASE_URL": "<X402_BASE_URL>",
"SOLANA_RPC_URL": "<SOLANA_RPC_URL>",
"EVM_RPC_URL": "<EVM_RPC_URL>"
}
}
}
}{
"servers": {
"x402-mcp": {
"type": "stdio",
"command": "npx",
"args": [
"-y",
"@privadovpn/[email protected]"
],
"env": {
"SOLANA_PRIVATE_KEY": "<SOLANA_PRIVATE_KEY>",
"EVM_PRIVATE_KEY": "<EVM_PRIVATE_KEY>",
"PREFERRED_NETWORK": "<PREFERRED_NETWORK>",
"X402_BASE_URL": "<X402_BASE_URL>",
"SOLANA_RPC_URL": "<SOLANA_RPC_URL>",
"EVM_RPC_URL": "<EVM_RPC_URL>"
}
}
}
}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 |
|---|---|
SOLANA_PRIVATE_KEYOptional, secret | Base58-encoded Solana secret key used to sign and pay in SPL USDC. At least one of SOLANA_PRIVATE_KEY or EVM_PRIVATE_KEY is required. |
EVM_PRIVATE_KEYOptional, secret | Hex-encoded EVM private key used to sign EIP-3009 USDC authorizations. At least one of SOLANA_PRIVATE_KEY or EVM_PRIVATE_KEY is required. |
PREFERRED_NETWORKOptional | Which network to prefer when a quote offers both. Accepts 'solana' or 'evm' ('eip155' is an accepted alias for 'evm'). Defaults to 'solana' if SOLANA_PRIVATE_KEY is set, else 'evm'. |
X402_BASE_URLOptional | Base URL of the x402 payment backend used for catalog, quote, and fulfillment requests. Defaults to https://x402.privadovpn.com. |
SOLANA_RPC_URLOptional | Solana RPC endpoint used to check balances and broadcast transactions. Defaults to https://api.mainnet-beta.solana.com. |
EVM_RPC_URLOptional | EVM RPC endpoint used to check balances and broadcast transactions. Required for EVM payments. |
Details
| Package | @privadovpn/[email protected] (NPM, stdio) |
| First published | 30 Oct 2026 |
| Last updated | 30 Oct 2026 |
| Registry name | io.github.privadovpn/x402-mcp |
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