Unlimit MCP servers with zero upfront tokens, and up to 90% token reduction
MCPU is an MCP multiplexer (1:N) that manages all your MCP servers for multiple AI Assistants, with progressive discovery, parallel batch calls, code execution, and up to 90% token reduction.
Claude CLI/Desktop ─┐ ┌-> playwright Gemini CLI ──┤ ├-> filesystem Antigravity ──┼-> mcpu ──┼-> memory Cursor ──┤ ├-> tasks OpenAI Codex ─┘ └-> chroma % mcpu-stat MCPU Schema Size Statistics | Server | Tools | MCP Native | MCPU Full | Δ Full | MCPU Compact | Δ Compact | |------------|-------|------------|-----------|--------|--------------|-----------| | chroma | 13 | 11.3 KB | 8.3 KB | -26% | 1.8 KB | -84% | | memory | 9 | 8.3 KB | 2.1 KB | -75% | 1.2 KB | -86% | | playwright | 22 | 11.1 KB | 7.4 KB | -34% | 2.2 KB | -80% | | chrome-dev | 26 | 12.9 KB | 9.3 KB | -28% | 3.5 KB | -73% | | context7 | 2 | 2.9 KB | 2.7 KB | -9% | 833 B | -72% | | tasks | 20 | 25.6 KB | 5.3 KB | -79% | 2.2 KB | -91% | |------------|-------|------------|-----------|--------|--------------|-----------| | TOTAL | 92 | 72.2 KB | 35.0 KB | -51% | 11.8 KB | -84% | The "Compact" format uses abbreviated type notation and omits redundant metadata, reducing 92 tools from 72KB to under 12KB.
Move all your MCP servers in
~/.claude.json.mcpServersto~/.config/mcpu/config.jsonAdd this MCP Unified to your Claude CLI
claude mcp add --scope=user mcpu -- npx --package=@mcpu/cli -c mcpu-mcp Start Claude CLI and check
/conextto verify thatmcpuis the ony MCP server Claude connected.Test by asking Claude to
list my mcp servers
Something like this:
> list my mcp servers ⏺ mcpu - cli (MCP)(argv: ["servers"]) ⎿ disconnected: - chroma - disconnected - Type: stdio - Command: uvx chroma-mcp --client-t ype persistent --data-dir ~/.local/share/chromadb - ENV:{"ANO … +13 lines (ctrl+o to expand) ⏺ You have 6 MCP servers configured (all disconnected): | Server | Command | |------------|--------------------------------------------| | chroma | uvx chroma-mcp (persistent chromadb) | | memory | npx -y @modelcontextprotocol/server-memory | | playwright | npx playwright run-mcp-server | | chrome-dev | npx -y chrome-devtools-mcp@latest | | context7 | npx -y @upstash/context7-mcp@latest | | tasks | tasks-mcp | To connect to a server, use connect <server>. - Progressive discovery - Servers and tools revealed only when needed
- Schema compression - Up to 90% reduction using compact format
- Multi-instance connections - Multiple connections to same server for true parallelism
- Batch execution - Real cross-server parallel calls
- Exec command - JavaScript orchestration with filtering
MCPU can run in two modes:
- MCP Server Mode (
mcpu-mcp) - For MCP-native clients like Claude Desktop - CLI/Daemon Mode (
mcpu-daemon+mcpu-remote) - For agents with bash access like Claude Code
The CLI mode is useful when your AI agent can execute shell commands but doesn't have native MCP support.
| Package | Description |
|---|---|
| @mcpu/cli | Core CLI and MCP server |
Source code is in packages/mcpu-cli.