402sentinel MCP Server
by kaditangio.github.kaditang/402sentinel-mcpv0.7.1
x402 payment safety for AI agents: counterparty risk gate, payment firewall, compliance, RWA gate.
context tax
queued
security
queued
cold start
queued
freshness
Maintained34d ago
Install 402sentinel MCP server
Install in Claude Code
claude mcp add 402sentinel -e CLIENT_PRIVATE_KEY='<client-private-key>' -- npx -y @kaditang/402sentinel-mcpInstall in Cursor
{
"mcpServers": {
"402sentinel": {
"command": "npx",
"args": [
"-y",
"@kaditang/402sentinel-mcp"
],
"env": {
"CLIENT_PRIVATE_KEY": "<client-private-key>"
}
}
}
}Add to ~/.cursor/mcp.json (global) or .cursor/mcp.json (project).
Install in Claude Desktop
{
"mcpServers": {
"402sentinel": {
"command": "npx",
"args": [
"-y",
"@kaditang/402sentinel-mcp"
],
"env": {
"CLIENT_PRIVATE_KEY": "<client-private-key>"
}
}
}
}Settings → Developer → Edit Config (claude_desktop_config.json), then restart.
Install in VS Code
{
"servers": {
"402sentinel": {
"type": "stdio",
"command": "npx",
"args": [
"-y",
"@kaditang/402sentinel-mcp"
],
"env": {
"CLIENT_PRIVATE_KEY": "<client-private-key>"
}
}
}
}Add to .vscode/mcp.json in your workspace.
Install in Windsurf
{
"mcpServers": {
"402sentinel": {
"command": "npx",
"args": [
"-y",
"@kaditang/402sentinel-mcp"
],
"env": {
"CLIENT_PRIVATE_KEY": "<client-private-key>"
}
}
}
}Add to ~/.codeium/windsurf/mcp_config.json.
Configuration
| Variable | Required | Secret | Description |
|---|---|---|---|
| CLIENT_PRIVATE_KEY | yes | yes | A Base wallet holding USDC on-chain (no gas needed) — pays per call, from $0.002. |
| SENTINEL_URL | — | — | Override the service base URL (default https://402sentinel.com). |
Freshness
Maintained — last maintenance signal 34d ago. The newest of the signals below sets the band.
Last commit (default branch)
2026-09-06 · 34d ago · GitHub
Latest release
no data · GitHub
Package published
no data · npm/PyPI
Registry entry updated
2026-06-10 · 4mo ago · official registry · v0.7.1
FAQ
›How do I install the 402sentinel MCP server in Claude Code?
Run: claude mcp add 402sentinel -e CLIENT_PRIVATE_KEY='<client-private-key>' -- npx -y @kaditang/402sentinel-mcp. For Cursor, VS Code, Claude Desktop and Windsurf, use the install tabs above.
›Does 402sentinel require an API key?
Yes. It expects CLIENT_PRIVATE_KEY, of which 1 is a secret.
›Can I use 402sentinel as a remote (hosted) MCP server?
No hosted endpoint is published; it runs locally over stdio.
›Is 402sentinel in the official MCP registry?
Yes, as io.github.kaditang/402sentinel-mcp.