Sentinel is an MCP server with 2 tools an agent can call, among them check_address, check_url. It answers at https://448c.org/mcp over streamable HTTP, and it listed its tools to an anonymous client, so no sign-in was needed for that. Our probes reached it 6 of 6 times since 12 September 2026; the last check, on 24 October 2026, succeeded.
Pay-per-call safety checks for AI agents: screen a crypto address or URL before you transact.
Description as the publisher wrote it.
| Tool | What it does |
|---|---|
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. Inputs: address, chain |
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. Inputs: url |
Every block below points at https://448c.org/mcp. Pick your client and copy.
claude mcp add --transport http sentinel https://448c.org/mcp
{
"mcpServers": {
"sentinel": {
"command": "npx",
"args": ["-y", "mcp-remote", "https://448c.org/mcp"]
}
}
}{
"mcpServers": {
"sentinel": {
"url": "https://448c.org/mcp"
}
}
}{
"servers": {
"sentinel": {
"type": "http",
"url": "https://448c.org/mcp"
}
}
}{
"context_servers": {
"sentinel": {
"url": "https://448c.org/mcp"
}
}
}{
"mcpServers": {
"sentinel": {
"serverUrl": "https://448c.org/mcp"
}
}
}{
"mcpServers": {
"sentinel": {
"url": "https://448c.org/mcp"
}
}
}name: Sentinel
version: 0.0.1
schema: v1
mcpServers:
- name: Sentinel
type: streamable-http
url: https://448c.org/mcp{
"mcpServers": {
"sentinel": {
"httpUrl": "https://448c.org/mcp"
}
}
}{
"mcpServers": {
"sentinel": {
"type": "http",
"url": "https://448c.org/mcp"
}
}
}{
"mcpServers": {
"sentinel": {
"url": "https://448c.org/mcp"
}
}
}goose://extension?url=https%3A%2F%2F448c.org%2Fmcp&type=streamable_http&id=sentinel&name=Sentinel
It answered our last check on 24 October 2026 in 334 ms. Over 6 checks since 12 September 2026 it answered 6. Status here comes from Neuronto's own probes, not from the publisher.
Yes. It is published by 448c.org and served from 448c.org, the vendor's own domain: https://448c.org/mcp.
2, as returned by the server's own tools/list on 23 September 2026: check_address, check_url.
It answered our last check on 24 October 2026 in 334 ms. Over 6 checks since 12 September 2026 it answered 6.
Put the server under mcpServers in ~/.cursor/mcp.json with the URL https://448c.org/mcp. The exact JSON is above, with the same setup for Claude Code, Claude Desktop, VS Code, Windsurf, Zed, Gemini CLI and the rest.
It listed its tools to an anonymous client, so reading the tool list needs no key. Individual tools can still ask for credentials in their own inputs.
Publisher: org.448c. Endpoint host: 448c.org. ARD identifier: urn:air:org.448c:mcp:sentinel.
First indexed 10 September 2026. The tools are exactly what the server returned; nothing on this page
is inferred from its name. Ranking in Neuronto search is never for sale.