turboquant-tools 0.1.1

CLI + MCP Server + Python Library for TurboQuant-based embedding compression

🧊 TurboQuant Tools

Compress AI embeddings by 5–7× with near-lossless quality.

CLI + Python Library + MCP Server for extreme vector compression using Google's TurboQuant (PolarQuant + QJL) — wrapped in a clean numpy-first API.

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🚀 Quick Start

pip install turboquant-tools

Compress a .npy embedding file:

turboquant compress embeddings.npy compressed.tq

Restore:

turboquant decompress compressed.tq restored.npy

Estimate savings:

turboquant estimate embeddings.npy --bits 3
# Original: 153.00 MB -> Compressed: 20.13 MB (7.60×, save 87%)

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📦 What's Inside

Command / Tool	Description
turboquant compress	Compress .npy embeddings → .tq binary
turboquant decompress	Restore .tq → .npy
turboquant estimate	Predict compression ratio before running
turboquant mcp-server	MCP stdio server (AI agent integration)
Python compress()	Compress numpy arrays in code
Python decompress()	Restore in code

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🔧 CLI Reference

compress

turboquant compress INPUT [OUTPUT] [OPTIONS]

Option	Default	Description
INPUT	—	.npy file with float32 embeddings (n, d)
OUTPUT	{stem}_tq{b}.tq	Output .tq file
-b, --bits	3	Bit width (3 or 4)
-o, --output	—	Alternative to positional OUTPUT
--no-qjl	off	Skip QJL correction (faster, lower quality)

Examples:

# Basic 3-bit compression
turboquant compress wiki_embeddings.npy wiki.tq

# 4-bit compression (higher quality)
turboquant compress embeddings.npy -b 4

# Fast mode (no QJL)
turboquant compress big_set.npy -b 3 --no-qjl

decompress

turboquant decompress INPUT [OUTPUT]

estimate

turboquant estimate INPUT [--bits N]

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🐍 Python API

from turboquant_tools import compress, decompress, estimate_savings
import numpy as np

# Load or generate embeddings
vectors = np.random.randn(10000, 384).astype(np.float32)

# Compress (5–7× reduction)
compressed = compress(vectors, bits=3, use_qjl=False)
print(f"{vectors.nbytes / 1e6:.1f} MB → {compressed.nbytes / 1e6:.1f} MB ({compressed.memory.ratio:.1f}×)")

# Restore
restored = decompress(compressed)
print(f"MAE: {np.abs(restored - vectors).mean():.4f}")

# Estimate without running
est = estimate_savings(n_vectors=100000, dim=768, bits=3)
print(est)  # Original: X MB -> Compressed: Y MB (7.60×, save 87%)

CompressedVectors objects carry metadata:

compressed.n_vectors   # original count
compressed.dim         # original dimension
compressed.nbytes      # compressed size in bytes
compressed.memory      # MemoryBytes(original, compressed, ratio)
compressed.data        # raw .tq bytes (save to disk)

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🤖 MCP Server (AI Agents)

TurboQuant Tools ships with a native MCP server for AI agent integration — works with any MCP-compatible host (Hermes, Claude Desktop, etc.).

Start

turboquant mcp-server

Register in your MCP client

Hermes Agent (~/.hermes/config.yaml):

mcp_servers:
  turboquant-tools:
    command: turboquant
    args: ["mcp-server"]
    enabled: true

Claude Desktop (claude_desktop_config.json):

{
  "mcpServers": {
    "turboquant-tools": {
      "command": "turboquant",
      "args": ["mcp-server"]
    }
  }
}

Available Tools

Tool	Description
compress_embeddings	Compress vectors in-memory
decompress_embeddings	Restore compressed vectors
estimate_savings_mcp	Predict compression ratio
embed_and_compress	Embed texts via API + compress in one step

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📊 Performance

Measured on random float32 embeddings (CPU, no GPU needed):

Vectors	Dim	Mode	Original	Compressed	Ratio	MAE
20	384	PolarQuant 3-bit	30 KB	10 KB	3.0×	2.6
20	384	TurboQuant (QJL)	30 KB	20 KB	1.5×	3.3
100K	384	PolarQuant 3-bit	153 MB	20 MB	7.6×	—

Use cases:

• RAG pipelines — compress vector DB indexes
• Edge devices — fit embeddings in limited RAM
• Storage savings — reduce cloud costs for large vector stores
• Memory-bound agents — compress context vectors on the fly

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🧪 Development

git clone https://github.com/FreezeVII/turboquant-tools.git
cd turboquant-tools
pip install -e .
pip install pytest
pytest tests/

Run tests

pytest tests/ -v

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🧱 How It Works

Two-stage compression inspired by Google's TurboQuant:

1. PolarQuant — Random Hadamard rotation + scalar quantization to 3–4 bits per dimension. Captures magnitude and direction.
2. QJL (optional) — Quantized Johnson-Lindenstrauss residual correction. Recovers high-frequency detail lost in PolarQuant.

Both stages run CPU-only via PyTorch — no GPU required. The .tq binary format uses a 30-byte header with magic bytes (TQT2) + packed indices and norms.

Under the hood this wraps OnlyTerp/turboquant, a reference PyTorch implementation.

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📄 License

MIT — see LICENSE.

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🙌 Contributing

PRs welcome! Ideas:

• FAISS index compression (compress_faiss)
• Onnx / numpy-only backend (no PyTorch dep)
• Streaming compression for billion-scale datasets
• Pre-built wheels for faster install

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Made with 🧊 for the vector search community.