Vauban Pay MCP Server
tech.vauban/pay-mcpv0.7.1
x402 tools for MCP clients: pay exact/Starknet or STARK-receipt 402s, verify, JCS-hash. No account.
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Active32d ago
Install Vauban Pay MCP server
Install in Claude Code
claude mcp add vauban-pay -e PAY_MCP_SEPOLIA_PRIVATE_KEY='<pay-mcp-sepolia-private-key>' -e PAY_MCP_STANDARD_X402_PRIVATE_KEY='<pay-mcp-standard-x402-private-key>' -- npx -y @vauban-pay/mcpInstall in Cursor
{
"mcpServers": {
"vauban-pay": {
"command": "npx",
"args": [
"-y",
"@vauban-pay/mcp"
],
"env": {
"PAY_MCP_SEPOLIA_PRIVATE_KEY": "<pay-mcp-sepolia-private-key>",
"PAY_MCP_STANDARD_X402_PRIVATE_KEY": "<pay-mcp-standard-x402-private-key>"
}
}
}
}Add to ~/.cursor/mcp.json (global) or .cursor/mcp.json (project).
Install in Claude Desktop
{
"mcpServers": {
"vauban-pay": {
"command": "npx",
"args": [
"-y",
"@vauban-pay/mcp"
],
"env": {
"PAY_MCP_SEPOLIA_PRIVATE_KEY": "<pay-mcp-sepolia-private-key>",
"PAY_MCP_STANDARD_X402_PRIVATE_KEY": "<pay-mcp-standard-x402-private-key>"
}
}
}
}Settings → Developer → Edit Config (claude_desktop_config.json), then restart.
Install in VS Code
{
"servers": {
"vauban-pay": {
"type": "stdio",
"command": "npx",
"args": [
"-y",
"@vauban-pay/mcp"
],
"env": {
"PAY_MCP_SEPOLIA_PRIVATE_KEY": "<pay-mcp-sepolia-private-key>",
"PAY_MCP_STANDARD_X402_PRIVATE_KEY": "<pay-mcp-standard-x402-private-key>"
}
}
}
}Add to .vscode/mcp.json in your workspace.
Install in Windsurf
{
"mcpServers": {
"vauban-pay": {
"command": "npx",
"args": [
"-y",
"@vauban-pay/mcp"
],
"env": {
"PAY_MCP_SEPOLIA_PRIVATE_KEY": "<pay-mcp-sepolia-private-key>",
"PAY_MCP_STANDARD_X402_PRIVATE_KEY": "<pay-mcp-standard-x402-private-key>"
}
}
}
}Add to ~/.codeium/windsurf/mcp_config.json.
Configuration
| Variable | Required | Secret | Description |
|---|---|---|---|
| STARKNET_RPC_URL | — | — | Starknet Sepolia RPC endpoint for the two chain-reading tools. Optional; defaults to a public node not operated by Vauban. |
| PAY_MCP_SEPOLIA_ACCOUNT_ADDRESS | — | — | Starknet Sepolia account address enabling make_payment chain mode. Optional; without it make_payment returns a hash-only pending result with no network call. |
| PAY_MCP_SEPOLIA_PRIVATE_KEY | — | yes | Private key for that account. Optional; never required to try the tools. |
| PAY_MCP_STANDARD_X402_PAYEES | — | — | Standard x402 path: comma-separated payTo addresses pay_for_resource may pay, or * for any. Empty pays nobody (fail closed). |
| PAY_MCP_STANDARD_X402_MAX_WEI | — | — | Standard x402 path: cap on one payment in atomic units (default 0.1 STRK). |
| PAY_MCP_STANDARD_X402_ACCOUNT_ADDRESS | — | — | Standard x402 path: a signer of its own (falls back to PAY_MCP_SEPOLIA_*). |
| PAY_MCP_STANDARD_X402_PRIVATE_KEY | — | yes | Private key for that account. Optional. |
Freshness
Active — last maintenance signal 32d ago. The newest of the signals below sets the band.
Last commit (default branch)
no data · GitHub
Latest release
no data · GitHub
Package published
no data · npm/PyPI
Registry entry updated
2026-09-08 · 32d ago · official registry · v0.7.1
FAQ
›How do I install the Vauban Pay MCP server in Claude Code?
Run: claude mcp add vauban-pay -e PAY_MCP_SEPOLIA_PRIVATE_KEY='<pay-mcp-sepolia-private-key>' -e PAY_MCP_STANDARD_X402_PRIVATE_KEY='<pay-mcp-standard-x402-private-key>' -- npx -y @vauban-pay/mcp. For Cursor, VS Code, Claude Desktop and Windsurf, use the install tabs above.
›Does Vauban Pay require an API key?
Yes. It expects PAY_MCP_SEPOLIA_PRIVATE_KEY, PAY_MCP_STANDARD_X402_PRIVATE_KEY, of which 2 are secrets.
›Can I use Vauban Pay as a remote (hosted) MCP server?
No hosted endpoint is published; it runs locally over stdio.
›Is Vauban Pay in the official MCP registry?
Yes, as tech.vauban/pay-mcp.