Kernel MCP Server

by onkernel Your server? Claim it

answering

Kernel MCP Server is answering right now. Last checked 15 min ago. Last commit 18 Sep 2026.

Access Kernel's cloud-based browsers and app actions via MCP (remote HTTP + OAuth).

Uptime history 48 days of history · worst day 74%

48 days agonow

100.0%

Uptime 24h

91 of 91 checks

—

Tools

hidden behind auth

322 ms

Response time

average over 24h

Stars

last commit 18 Sep 2026

What changed 41

Every tool that appeared, vanished or quietly changed what it asks for. Recorded since 9 August 2026. No other catalogue keeps this.

18 Sep the owner changed

17 Sep the owner changed

16 Sep the owner changed

15 Sep the owner changed

14 Sep the owner changed

13 Sep the owner changed

12 Sep the owner changed

11 Sep the owner changed

10 Sep the owner changed

9 Sep the owner changed

and 31 more, back to 9 August 2026

Nothing serious here today

Today is the operative word: we check Kernel MCP Server every 15 minutes and re-read its code on every release. Watch it and you find out the day that stops being true.

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 15 min ago.

Claude Code Claude Desktop Codex Cursor VS Code

run in your terminal

claude mcp add kernel-mcp-server --transport http https://mcp.onkernel.com/mcp

~/Library/Application Support/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "kernel-mcp-server": {
      "url": "https://mcp.onkernel.com/mcp"
    }
  }
}

~/.codex/config.toml

[mcp_servers.kernel-mcp-server]
url = "https://mcp.onkernel.com/mcp"

.cursor/mcp.json

{
  "mcpServers": {
    "kernel-mcp-server": {
      "url": "https://mcp.onkernel.com/mcp"
    }
  }
}

.vscode/mcp.json

{
  "mcpServers": {
    "kernel-mcp-server": {
      "url": "https://mcp.onkernel.com/mcp"
    }
  }
}

This endpoint answered with an authorization challenge. The server is running, but you need an API key from its owner to call it.

Endpoints

URL	Transport	State	Latency	Checked
https://mcp.onkernel.com/mcp	streamable-http	needs key	247 ms	15 min ago

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Kernel MCP Server — questions

Answers built from our own checks of this server.

Why is there no tool list for Kernel MCP Server?

The server answered our handshake with an authorization challenge, so it is running — but it will not describe its tools to an anonymous client. To see them you need to connect with your own credentials. We record it as alive, not as broken: 100.0% of checks in the last 24 hours got a reply.

Is Kernel MCP Server 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 322 ms. The bar chart above shows every period we have measured.

How do I connect Kernel MCP Server?

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. You will need your own key: it refuses anonymous clients.

Does Kernel MCP Server need an API key?

Yes. Every time we knock, Kernel MCP Server answers with an authorization challenge instead of its tool list — that is how we know it is running and gated rather than broken. Bring your own credentials and it will talk.

How fast is Kernel MCP Server?

It answers our handshake in 322 ms on average, which is faster than 48% of all working MCP servers we measure. The comparison comes from our own checks across the whole registry, every 15 minutes.

Is Kernel MCP Server open source?

Yes — it is published under the MIT licence, written in TypeScript, 35 stars on GitHub and 3 open issues. The source link is on this page, so you can read exactly what it does with your data before you connect it.