Haystack – Production RAG Framework

Haystack is an open-source framework for building production-ready search and question-answering systems using RAG.

• GitHub: github.com/deepset-ai/haystack (20 000+ ⭐)
• License: Apache-2.0
• Security: Backed by deepset. Enterprise-grade. No malware.

Environment Variables

Variable	Description
{{HAYSTACK_URL}}	Base URL of a Haystack pipeline API

Usage Examples

Query a deployed pipeline

curl -s -X POST "{{HAYSTACK_URL}}/query" \
  -H "Content-Type: application/json" \
  -d '{"query": "What is retrieval augmented generation?"}'

AI Agent Tips

• Modular pipeline architecture: swap retrievers, generators, and stores.
• Supports hybrid search (BM25 + dense vector retrieval).
• Built-in evaluation tools for measuring RAG quality.
• Integrates with Elasticsearch, OpenSearch, Qdrant, Weaviate, and more.