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Zerno Lite MCP Server

by zerno Your server? Claim it
answering

Zerno Lite is answering right now. Last checked 9 min ago. Last commit 15 Jun 2026.

Give AI agents secure access to ZERNO project briefs, tasks, and context over remote MCP.

Uptime history 91 days of history · worst day 0%
91 days agonow
100.0%
Uptime 24h
91 of 91 checks
—
Tools
hidden behind auth
519 ms
Response time
average over 24h
0
Stars
last commit 15 Jun 2026

Zerno Lite does not always answer

Over the last week it answered 35.7% of our checks. We check every 15 minutes, so you hear about the next outage within the hour — not from your users.

Three servers free · no card

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 9 min ago.

run in your terminal
claude mcp add zerno-lite --transport http https://zerno.one/mcp
Settings → Connectors → Add custom connector, then paste this address
https://zerno.one/mcp
~/.codex/config.toml
[mcp_servers.zerno-lite]
url = "https://zerno.one/mcp"
.cursor/mcp.json
{
  "mcpServers": {
    "zerno-lite": {
      "url": "https://zerno.one/mcp"
    }
  }
}
.vscode/mcp.json
{
  "servers": {
    "zerno-lite": {
      "type": "http",
      "url": "https://zerno.one/mcp"
    }
  }
}

This endpoint answered with an authorization challenge. The server is running, and it signs you in through your browser: there is no API key to paste.

Endpoints

URLTransportStateLatencyChecked
https://zerno.one/mcp streamable-http sign-in 133 ms 9 min ago

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Zerno Lite — questions

Answers built from our own checks of this server.

Why is there no tool list for Zerno Lite?
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 Zerno Lite 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 519 ms. The bar chart above shows every period we have measured.
How do I connect Zerno Lite?
Copy the ready config from this page. We generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each in the form that client actually reads. It is a remote server, so there is nothing to install — the client connects to the address. You sign in through your browser once and the client keeps the session: no key to copy, and it refuses anonymous clients.
How do you sign in to Zerno Lite?
No API key is involved. Zerno Lite answers our knock with an OAuth challenge, so you authorise it once in your browser and the client keeps the session. That is also why we see no tool list: it will not describe itself to an anonymous client, and that is the server working as intended, not a fault.
How fast is Zerno Lite?
It answers our handshake in 519 ms on average, which is faster than 23% 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.
Is Zerno Lite open source?
The code is open source: it is published under the MIT licence, 0 stars on GitHub and 1 open issue. The licence covers the code in the repository, not the hosted service at zerno.one, which runs on its operator's own terms.