✨ xtiandOS

Agentic home-lab web OS for Kali Linux with mjane, the copilot manager.

Run it

npm install
npm run db:push        # first time only
cp .env.example .env   # set MASTER_SECRET!
npm run dev:api &      # http://localhost:3101
npm run dev:web        # http://localhost:5174

CLI: node apps/cli/bin/xos.mjs (or npm link -w apps/cli → xos ask "...")

Related MCP server: Codex Harness MCP

MCP

xtiandOS is both an MCP host (client) and an MCP server.

As a client (mjane uses external MCP servers)

Manage servers in 🧩 Skills & MCP:

• stdio servers — local tools like the reference filesystem or sequential-thinking servers: npx -y @modelcontextprotocol/server-filesystem ./

• Streamable HTTP servers — remote tools with optional auth headers

• Add servers in the UI, or declare them in mcp.json (claude_desktop_config.json-compatible format) and press Sync mcp.json. Reference: mcp.example.json.

• Each server can be probed to list its tools, resources, and prompts; resources and prompts can be read/fetched from the UI.

Enabled servers are connected at chat time and their tools are exposed to mjane as mcp_<tool>.

As a server (any MCP client connects to xtiandOS)

Packet packages/mcp-server exposes the brain, memory, chat, message bus, shell, docker, and artifact tools plus resources, prompts, roots, and sampling:

# stdio (point any MCP client at this command)
node --import tsx packages/mcp-server/src/index.ts

# Streamable HTTP (http://0.0.0.0:8942)
XTIANDOS_MCP_PORT=8942 node --import tsx packages/mcp-server/src/http-server.ts

Capabilities: tools, resources (subscribe + listChanged), prompts, roots, sampling. Configure from mcp.json:

{
  "mcpServers": {
    "xtiandos": {
      "command": "node",
      "args": ["--import", "tsx", "/abs/path/xtiandOS/packages/mcp-server/src/index.ts"]
    }
  }
}

What mjane can do

Architecture

• apps/api — Express + Prisma 7 (SQLite) + agent orchestration

• apps/web — React 19 + Vite, dark theme

• apps/cli — xos terminal companion

• packages/shared — domain types

• packages/mjane-core — providers, plan→act→observe loop, tools, hybrid RAG

• packages/mcp-bridge — MCP stdio client (connect any MCP server)

Memory: vault notes are chunked + embedded into MemoryChunk; retrieval = cosine (50%) + keyword overlap (40%) + recency decay (10%). Reindex from the Brain page. Provider embeddings upgrade automatically when a key works.

Rules

• No unprompted commits. Tests required per feature (npm test).

• Never commit .env / *.db / installed skills.