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2o MCP Server

by russellshen1992 Your server? Claim it
answering

2o is answering right now. Last checked 7 min ago. 23 installs a week from npm.

Human intelligence API — AI agents verify facts with human domain experts via MCP

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

Installs per day peak 12 · avg 4 · +9% w/w
a month agotoday
Uptime history 47 days of history · worst day 0%
47 days agonow
100.0%
Uptime 24h
91 of 91 checks
—
Tools
hidden behind auth
536 ms
Response time
average over 24h
23
Installs / week
npm and PyPI

This one has been quiet for a while

Quiet is not dead — but it is worth knowing when it wakes up, or when someone else takes it over. We watch the repository and tell you either way.

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 7 min ago.

run in your terminal
claude mcp add 2o --transport http https://www.2oapi.xyz/api/mcp
~/Library/Application Support/Claude/claude_desktop_config.json
{
  "mcpServers": {
    "2o": {
      "url": "https://www.2oapi.xyz/api/mcp"
    }
  }
}
~/.codex/config.toml
[mcp_servers.2o]
url = "https://www.2oapi.xyz/api/mcp"
.cursor/mcp.json
{
  "mcpServers": {
    "2o": {
      "url": "https://www.2oapi.xyz/api/mcp"
    }
  }
}
.vscode/mcp.json
{
  "mcpServers": {
    "2o": {
      "url": "https://www.2oapi.xyz/api/mcp"
    }
  }
}

This endpoint answered with an authorization challenge. The server is running, but it did not say what kind of credentials it expects.

Endpoints

URLTransportStateLatencyChecked
https://www.2oapi.xyz/api/mcp sse needs auth 1083 ms 7 min ago

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2o — questions

Answers built from our own checks of this server.

Why is there no tool list for 2o?
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 2o 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 536 ms. The bar chart above shows every period we have measured.
Is 2o 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.
How do I connect 2o?
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 credentials: it refuses anonymous clients.
Does 2o need an API key?
Yes. Every time we knock, 2o 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 2o?
It answers our handshake in 536 ms on average, which is faster than 26% of all working MCP servers we measure. The comparison comes from our own checks across the whole registry, every 15 minutes.
How many people use 2o?
The npm package @russellshen1992/2o-mcp was installed 23 times in the last week. Week over week that is +9%. We show installs rather than GitHub stars on purpose: a star is a bookmark, an install is someone actually running it.