Sentinel 402 is a Model Context Protocol (MCP) server: Uptime and price-honesty oracle for x402: trust status, attestations, USDC history. In practice that means any MCP-compatible AI assistant can call Sentinel 402's tools directly — the model decides when to use them in a conversation or agent run.
It's a hosted (remote) server — point your client at https://mcp.sentinel402.verifiedky.xyz/mcp and you're connected, with nothing to install locally. The current release is v1.0.0.
Sentinel 402 is listed under Development on mcp.site and works with any MCP client — Claude Desktop, Claude Code, Cursor, VS Code, Windsurf, Zed and the rest of the ecosystem — using the install snippets below. If you maintain Sentinel 402 for pseudowater, claim this listing to verify ownership, earn the Verified badge, and keep the details current.