faiss

Perform vector similarity search using Facebook's FAISS library.

20|25|Updated May 30, 2026
One-click install
npx skills add https://github.com/OpenCoven/coven-cave --skill faiss-opencoven
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: faiss
Source: https://github.com/OpenCoven/coven-cave/tree/main/marketplace/craft-sources/archivists-index/faiss
Command: npx skills add https://github.com/OpenCoven/coven-cave --skill faiss-opencoven

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill requires faiss-cpu, faiss-gpu, numpy, and includes scripts (resource) and references (resource) components.

What problem does it solve?

This Skill allows for efficient similarity search and clustering of dense vectors, making it ideal for high-performance applications that require quick k-NN search, large-scale vector retrieval, and pure similarity search without metadata.

Core Features & Use Cases

  • High-Performance Search: Handles billions of vectors with GPU acceleration.
  • Diverse Index Types: Supports Flat, IVF, HNSW, and Product Quantization for various needs.
  • Use Case: If you need to search for similar images from a large dataset of billions of images, FAISS can provide quick and accurate results.

Quick Start

Use the faiss skill to perform a search on the 'large_dataset_vectors.faiss' index for the query vector 'new_query_vector.npy'.

Frequently Asked Questions about faiss

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I perform fast vector similarity search on large datasets?

Fast k-NN similarity search on large datasets is performed by using FAISS to index dense vectors and retrieve nearest neighbors efficiently. It handles billions of vectors with optional GPU acceleration.

What is the best way to handle pure similarity search without metadata?

Pure similarity search without metadata is handled by FAISS by clustering and retrieving dense vectors directly. This approach provides quick and accurate nearest neighbor results without metadata filtering overhead.

Can I use GPU acceleration for vector search with FAISS?

Yes, GPU acceleration for vector search is supported by FAISS through the faiss-gpu dependency. This allows high-performance applications to process billions of vectors with significantly faster query speeds.

What index types are available for different accuracy and speed requirements in similarity search?

Similarity search supports diverse FAISS index types including Flat, IVF, HNSW, and Product Quantization. These indexes allow you to balance search accuracy and speed based on your specific vector retrieval requirements.

Do I need faiss-cpu or faiss-gpu and numpy to perform k-NN search?

Yes, you need faiss-cpu or faiss-gpu and numpy to perform k-NN search operations. The faiss-gpu package provides hardware acceleration while numpy handles the dense vector array inputs required for indexing.