mcpbeat

Sentinel MCP Server

org.448c/sentinel
answering

Sentinel is answering right now. Last checked 11 min ago. It exposes 2 tools.

Pay-per-call safety checks for AI agents: screen a crypto address or URL before you transact.

Uptime history 40 hours of history
40 hours agonow
100.0%
Uptime 24h
91 of 91 checks
2
Tools
read from the server
231 ms
Response time
average over 24h
open, no key
Access
streamable-http

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 11 min ago.

run in your terminal
claude mcp add sentinel --transport http https://448c.org/mcp
~/Library/Application Support/Claude/claude_desktop_config.json
{
  "mcpServers": {
    "sentinel": {
      "url": "https://448c.org/mcp"
    }
  }
}
~/.codex/config.toml
[mcp_servers.sentinel]
url = "https://448c.org/mcp"
.cursor/mcp.json
{
  "mcpServers": {
    "sentinel": {
      "url": "https://448c.org/mcp"
    }
  }
}
.vscode/mcp.json
{
  "mcpServers": {
    "sentinel": {
      "url": "https://448c.org/mcp"
    }
  }
}

Available tools 2

Read directly from the server with tools/list, grouped by what they act on. If a tool disappears, we record the date.

address
check_address
Check whether a crypto address is safe to transact with. Screens OFAC sanctions + community scam lists and flags contract-vs-wallet. Returns verdict (safe/caution/avoid), 0-100 risk score, reasons, and sources.
url
check_url
Check whether a URL or domain is a scam/phishing site. Screens the MetaMask crypto-phishing blocklist, domain age (RDAP), and lexical red flags. Returns verdict (safe/caution/avoid), 0-100 risk score, reasons, and sources.

Endpoints

URLTransportStateLatencyChecked
https://448c.org/mcp streamable-http answering 140 ms 11 min ago

Sentinel — questions

Answers built from our own checks of this server.

What can Sentinel do?
It exposes 2 tools, read directly from the server on our last check. Among them: check_address, check_url. The full list with descriptions is on this page — we take it from the server itself via tools/list, not from a README. How MCP servers expose tools in the first place →
Is Sentinel working right now?
We send a real MCP handshake every 15 minutes. Over the last 24 hours 91 of 91 checks got a reply (100.0%), average response time 231 ms. The bar chart above shows every period we have measured.
How do I connect Sentinel?
Copy the ready config from this page — we generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each with the file path that client actually reads. It is a remote server, so there is nothing to install — the client connects to the address.
Does Sentinel need an API key?
No. Sentinel completed a full MCP handshake with us as an anonymous client and listed its tools without asking for anything. All 2 of them are readable on this page. This is what we observed, not what the docs claim.
How fast is Sentinel?
It answers our handshake in 231 ms on average, which is faster than 56% of all working MCP servers we measure. The comparison comes from our own checks across the whole registry, every 15 minutes.