mcpbeat

Sendinel MCP Server

ai.sendinel/mcp-server
not responding

Sendinel is listed as active in the registry but did not answer our last check. 794 installs a week from npm.

AI-controlled email ops for campaigns, contacts, segments, analytics, and sending.

The linked repository no longer exists on GitHub — it was deleted or made private.

Installs per day peak 394 · avg 37 · +1293% w/w
a month agotoday
Uptime history 39 hours of history · worst hour 0%
39 hours agonow
23.1%
Uptime 24h
21 of 91 checks
—
Tools
hidden behind auth
1039 ms
Response time
average over 24h
794
Installs / week
npm and PyPI

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 13 min ago.

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

Endpoints

URLTransportStateLatencyChecked
https://sendinel.ai/mcp streamable-http answering 84 ms 13 min ago

Sendinel — questions

Answers built from our own checks of this server.

Is Sendinel working right now?
We send a real MCP handshake every 15 minutes. Over the last 24 hours 21 of 91 checks got a reply (23.1%), average response time 1039 ms. The bar chart above shows every period we have measured.
Is Sendinel still maintained?
The linked repository no longer exists on GitHub — it was deleted or made private. We show this because it changes what you can expect: an unmaintained server may keep answering for months and then stop without warning.
The registry lists Sendinel as active — why does it not respond?
The official MCP registry stores what the author submitted; it does not verify that the server still runs. We check the endpoint ourselves, and this one does not answer. Catalogues that copy the registry without checking will show it as working.
How do I connect Sendinel?
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 Sendinel need an API key?
No. Sendinel completed a full MCP handshake with us as an anonymous client and listed its tools without asking for anything. This is what we observed, not what the docs claim.
How fast is Sendinel?
It answers our handshake in 1039 ms on average, which is faster than 4% of all working MCP servers we measure. That is on the slow side — worth knowing if the tool sits inside an interactive loop. The comparison comes from our own checks across the whole registry, every 15 minutes.
How many people use Sendinel?
The npm package @sendinel/mcp-server was installed 794 times in the last week. Week over week that is +1293%. We show installs rather than GitHub stars on purpose: a star is a bookmark, an install is someone actually running it.