Plexus MCP Server

by pcas-io Your server? Claim it

not responding

Plexus is listed as active in the registry but did not answer our last check. Last commit 27 Apr 2026.

Typed on-prem knowledge graph for AI agents — read-only for humans, write-only for agents via MCP.

Uptime history 51 days of history · worst day 0%

51 days agonow

0.0%

Uptime 24h

0 of 90 checks

—

Tools

hidden behind auth

1 ms

Response time

average over 24h

Stars

last commit 27 Apr 2026

Plexus does not always answer

Over the last week it answered 0.0% of our checks. We check every 15 minutes, so you hear about the next outage within the hour — not from your users.

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 16 min ago.

Claude Code Claude Desktop Codex Cursor VS Code

run in your terminal

claude mcp add plexus --transport http https://{plexus_host}/mcp

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

{
  "mcpServers": {
    "plexus": {
      "url": "https://{plexus_host}/mcp"
    }
  }
}

~/.codex/config.toml

[mcp_servers.plexus]
url = "https://{plexus_host}/mcp"

.cursor/mcp.json

{
  "mcpServers": {
    "plexus": {
      "url": "https://{plexus_host}/mcp"
    }
  }
}

.vscode/mcp.json

{
  "mcpServers": {
    "plexus": {
      "url": "https://{plexus_host}/mcp"
    }
  }
}

Endpoints

URL	Transport	State	Latency	Checked
https://{plexus_host}/mcp	streamable-http	answering	1 ms	16 min ago

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Plexus — questions

Answers built from our own checks of this server.

Is Plexus working right now?

We send a real MCP handshake every 15 minutes. Over the last 24 hours 0 of 90 checks got a reply (0.0%), average response time 1 ms. The bar chart above shows every period we have measured.

The registry lists Plexus 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 Plexus?

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 Plexus need an API key?

No. Plexus 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.

Is Plexus open source?

Yes — it is published under the Apache-2.0 licence, written in TypeScript and 0 stars on GitHub. The source link is on this page, so you can read exactly what it does with your data before you connect it.