llama-index-vector-stores-zerodb

ZeroDB vector store integration for LlamaIndex - the AI-native vector database with free embeddings and sub-millisecond semantic search.

Why ZeroDB?

• Free embeddings - BAAI/bge-small-en-v1.5 (384-dim) powered by TEI, no OpenAI costs
• Sub-millisecond search - pgvector with HNSW indexes
• Zero infrastructure - fully managed, no servers to run
• Instant provisioning - POST /api/v1/instant-db gets you a database in one request
• Built for agents - MCP server, memory API, event streams

Installation

pip install llama-index-vector-stores-zerodb

Quick Start

from llama_index_zerodb import ZeroDBVectorStore
from llama_index.core import VectorStoreIndex, Document

# Initialize (get your API key at ainative.studio)
vector_store = ZeroDBVectorStore(
    api_key="your-api-key",
    project_id="your-project-id",
)

# Build index from documents
documents = [
    Document(text="ZeroDB is an AI-native vector database"),
    Document(text="Semantic search finds meaning, not keywords"),
]
index = VectorStoreIndex.from_documents(documents, vector_store=vector_store)

# Query
query_engine = index.as_query_engine()
response = query_engine.query("What is ZeroDB?")
print(response)

Use as a Standalone Vector Store

from llama_index_zerodb import ZeroDBVectorStore
from llama_index.core import VectorStoreIndex

# Connect to existing vectors
vector_store = ZeroDBVectorStore(
    api_key="your-api-key",
    project_id="your-project-id",
)

# Build index from existing store
index = VectorStoreIndex.from_vector_store(vector_store)

# Query
retriever = index.as_retriever(similarity_top_k=5)
results = retriever.retrieve("semantic search performance")
for node in results:
    print(f"{node.score:.3f}: {node.text[:100]}")

Get a Free API Key

1. Sign up at ainative.studio
2. Create a ZeroDB project
3. Copy your API key

Or get an instant database with no signup:

curl -X POST https://api.ainative.studio/api/v1/public/instant-db

Links

• ZeroDB Product Page
• API Documentation
• GitHub
• Discord
• LangChain Integration

License

MIT - Built by AINative Studio