Who maintains Nucleus?

Nucleus is maintained by eidetic-works, which publishes 1 MCP server (5 total versions) tracked on MCP Toplist.

Is Nucleus listed on the Official MCP Registry?

Yes — Nucleus is listed on the Official MCP Registry, alongside PulseMCP, Glama and mcp.so.

How many versions does Nucleus have?

MCP Toplist tracks 5 versions of Nucleus, most recently published on Jul 18, 2026.

Where can I find the source code for Nucleus?

The source code for Nucleus is hosted at github.com/eidetic-works/nucleus-mcp.

SERVER

Nucleus

Rank #3,512

io.github.eidetic-works/nucleus

Sovereign Agent OS — Persistent Memory, Governance & Compliance for AI Agents.

5 versions

4 GitHub stars

by eidetic-works (1 servers)View repository ↗

First listed

Feb 9, 2026

Last publish date

Jul 18, 2026

OVERVIEW

Nucleus is a Model Context Protocol (MCP) server published by eidetic-works. It ranks #3,512 of 115,460 servers tracked on MCP Toplist, and its repository has 4 GitHub stars. Nucleus is listed across 4 registries — Official MCP, PulseMCP, Glama and mcp.so, with 5 tracked versions. It was first listed on Feb 9, 2026 and most recently updated on Jul 18, 2026.

STANDING

#3,512of 115,460 tracked serversTop 5%

Ranks ahead of 111,948 of 115,460 servers on MCP Toplist.

CONNECT

Use Nucleus

No setupRuns out of the box

No credentials or required configuration declared — add it to your MCP client and go.

Remote · HTTP

claude mcp add --transport http nucleus https://relay.nucleusos.dev/mcp

npm package

claude mcp add nucleus -e "NUCLEUS_BRAIN_PATH=<your NUCLEUS_BRAIN_PATH>" -- npx -y nucleus-mcp

Replace each placeholder with your own value before saving.

Python package (PyPI)

claude mcp add nucleus -e "NUCLEUS_BRAIN_PATH=<your NUCLEUS_BRAIN_PATH>" -- uvx nucleus-mcp

Replace each placeholder with your own value before saving.

Remote · HTTP

[mcp_servers.nucleus]
url = "https://relay.nucleusos.dev/mcp"

Add to ~/.codex/config.toml.

npm package

[mcp_servers.nucleus]
command = "npx"
args = ["-y", "nucleus-mcp"]

[mcp_servers.nucleus.env]
NUCLEUS_BRAIN_PATH = "<your NUCLEUS_BRAIN_PATH>"

Add to ~/.codex/config.toml. Replace each placeholder with your own value before saving.

Python package (PyPI)

[mcp_servers.nucleus]
command = "uvx"
args = ["nucleus-mcp"]

[mcp_servers.nucleus.env]
NUCLEUS_BRAIN_PATH = "<your NUCLEUS_BRAIN_PATH>"

Add to ~/.codex/config.toml. Replace each placeholder with your own value before saving.

Remote · HTTP

https://relay.nucleusos.dev/mcp

Settings → Connectors → “Add custom connector”, then paste this URL.

npm package

{
  "mcpServers": {
    "nucleus": {
      "command": "npx",
      "args": [
        "-y",
        "nucleus-mcp"
      ],
      "env": {
        "NUCLEUS_BRAIN_PATH": "<your NUCLEUS_BRAIN_PATH>"
      }
    }
  }
}

Add to claude_desktop_config.json (Settings → Developer → Edit Config). Replace each placeholder with your own value before saving.

Python package (PyPI)

{
  "mcpServers": {
    "nucleus": {
      "command": "uvx",
      "args": [
        "nucleus-mcp"
      ],
      "env": {
        "NUCLEUS_BRAIN_PATH": "<your NUCLEUS_BRAIN_PATH>"
      }
    }
  }
}

Add to claude_desktop_config.json (Settings → Developer → Edit Config). Replace each placeholder with your own value before saving.

Remote · HTTP

{
  "mcpServers": {
    "nucleus": {
      "url": "https://relay.nucleusos.dev/mcp"
    }
  }
}

Add to ~/.cursor/mcp.json (global) or .cursor/mcp.json (per project).

npm package

{
  "mcpServers": {
    "nucleus": {
      "command": "npx",
      "args": [
        "-y",
        "nucleus-mcp"
      ],
      "env": {
        "NUCLEUS_BRAIN_PATH": "<your NUCLEUS_BRAIN_PATH>"
      }
    }
  }
}

Add to ~/.cursor/mcp.json (global) or .cursor/mcp.json (per project). Replace each placeholder with your own value before saving.

Python package (PyPI)

{
  "mcpServers": {
    "nucleus": {
      "command": "uvx",
      "args": [
        "nucleus-mcp"
      ],
      "env": {
        "NUCLEUS_BRAIN_PATH": "<your NUCLEUS_BRAIN_PATH>"
      }
    }
  }
}

Add to ~/.cursor/mcp.json (global) or .cursor/mcp.json (per project). Replace each placeholder with your own value before saving.

Remote · HTTP

{
  "servers": {
    "nucleus": {
      "type": "http",
      "url": "https://relay.nucleusos.dev/mcp"
    }
  }
}

Save as .vscode/mcp.json in your workspace.

npm package

{
  "servers": {
    "nucleus": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "nucleus-mcp"
      ],
      "env": {
        "NUCLEUS_BRAIN_PATH": "<your NUCLEUS_BRAIN_PATH>"
      }
    }
  }
}

Save as .vscode/mcp.json in your workspace. Replace each placeholder with your own value before saving.

Python package (PyPI)

{
  "servers": {
    "nucleus": {
      "type": "stdio",
      "command": "uvx",
      "args": [
        "nucleus-mcp"
      ],
      "env": {
        "NUCLEUS_BRAIN_PATH": "<your NUCLEUS_BRAIN_PATH>"
      }
    }
  }
}

Save as .vscode/mcp.json in your workspace. Replace each placeholder with your own value before saving.

Remote · HTTP

{
  "mcpServers": {
    "nucleus": {
      "serverUrl": "https://relay.nucleusos.dev/mcp"
    }
  }
}

Add to ~/.codeium/windsurf/mcp_config.json.

npm package

{
  "mcpServers": {
    "nucleus": {
      "command": "npx",
      "args": [
        "-y",
        "nucleus-mcp"
      ],
      "env": {
        "NUCLEUS_BRAIN_PATH": "<your NUCLEUS_BRAIN_PATH>"
      }
    }
  }
}

Add to ~/.codeium/windsurf/mcp_config.json. Replace each placeholder with your own value before saving.

Python package (PyPI)

{
  "mcpServers": {
    "nucleus": {
      "command": "uvx",
      "args": [
        "nucleus-mcp"
      ],
      "env": {
        "NUCLEUS_BRAIN_PATH": "<your NUCLEUS_BRAIN_PATH>"
      }
    }
  }
}

Add to ~/.codeium/windsurf/mcp_config.json. Replace each placeholder with your own value before saving.

Remote · HTTP

{
  "mcpServers": {
    "nucleus": {
      "url": "https://relay.nucleusos.dev/mcp"
    }
  }
}

npm package

{
  "mcpServers": {
    "nucleus": {
      "command": "npx",
      "args": [
        "-y",
        "nucleus-mcp"
      ],
      "env": {
        "NUCLEUS_BRAIN_PATH": "<your NUCLEUS_BRAIN_PATH>"
      }
    }
  }
}

Replace each placeholder with your own value before saving.

Python package (PyPI)

{
  "mcpServers": {
    "nucleus": {
      "command": "uvx",
      "args": [
        "nucleus-mcp"
      ],
      "env": {
        "NUCLEUS_BRAIN_PATH": "<your NUCLEUS_BRAIN_PATH>"
      }
    }
  }
}

Replace each placeholder with your own value before saving.

BADGE

Show your rank

Maintain this server? Add the live rank badge to your README — it updates automatically as the leaderboard changes.

Markdown

[![MCP Toplist](https://mcptoplist.com/badge/io.github.eidetic-works%2Fnucleus.svg)](https://mcptoplist.com/server/io.github.eidetic-works%2Fnucleus)

HTML

<a href="https://mcptoplist.com/server/io.github.eidetic-works%2Fnucleus"><img src="https://mcptoplist.com/badge/io.github.eidetic-works%2Fnucleus.svg" alt="MCP Toplist: Top 5% of 115,460" /></a>

Variants: append ?metric=score or ?metric=stars to the image URL.

REGISTRIES

Listed on 2 registries (2 delisted)

Official MCP

PulseMCPDelisted · last seen Jun 4, 2026

GlamaDelisted · last seen Jun 4, 2026

mcp.so

ORGANIZATION

eidetic-works

Organization

eidetic-works

Servers in org

Versions across org

VERSIONS

Available versions (5)

Version	Published
1.15.0	Jul 18, 2026
1.13.0	Jun 13, 2026
1.8.0	Apr 4, 2026
1.0.4	Feb 10, 2026
0.1.0	Nov 25, 2024

FAQ

Frequently asked questions

Who maintains Nucleus?: Nucleus is maintained by eidetic-works, which publishes 1 MCP server (5 total versions) tracked on MCP Toplist.
Is Nucleus listed on the Official MCP Registry?: Yes — Nucleus is listed on the Official MCP Registry, alongside PulseMCP, Glama and mcp.so.
How many versions does Nucleus have?: MCP Toplist tracks 5 versions of Nucleus, most recently published on Jul 18, 2026.
Where can I find the source code for Nucleus?: The source code for Nucleus is hosted at github.com/eidetic-works/nucleus-mcp.

EXPLORE

All MCP Servers Official MCP Servers GitHub MCP Servers Best MCP Servers Most Active MCP Servers New MCP Servers Best New MCP Servers