x402 Wallet
About
Self-custodial x402 wallet for AI agents: pay any service in USDC or $THREE from your own key.
Use this server
Add it to your MCP client. The catalogue lists this config verbatim from its source — it does not run, download, or vouch for the server. Review the command before you run it.
Transportstdio (runs a local command)
Env vars
SOLANA_SECRET_KEY SOLANA_RPC_URL MAX_PAY_USD REQUIRE_CONFIRM THREE_WS_BASEClaude Code
claude mcp add --env SOLANA_SECRET_KEY= --env SOLANA_RPC_URL= --env MAX_PAY_USD= --env REQUIRE_CONFIRM= --env THREE_WS_BASE= x402-mcp -- npx @three-ws/x402-mcp
Cursor
If the button doesn't open Cursor, use the JSON below — Cursor accepts the same mcpServers config.
VS Code
code --add-mcp '{"name":"x402-mcp","command":"npx","args":["@three-ws/x402-mcp"],"env":{"SOLANA_SECRET_KEY":"","SOLANA_RPC_URL":"","MAX_PAY_USD":"","REQUIRE_CONFIRM":"","THREE_WS_BASE":""}}'
JSON
{
"mcpServers": {
"x402-mcp": {
"command": "npx",
"args": [
"@three-ws/x402-mcp"
],
"env": {
"SOLANA_SECRET_KEY": "",
"SOLANA_RPC_URL": "",
"MAX_PAY_USD": "",
"REQUIRE_CONFIRM": "",
"THREE_WS_BASE": ""
}
}
}
}
Environment variables are listed by name only — fill in your own values. Entries never carry secrets.