HeliosDB Nano

The PostgreSQL-Compatible Database Built for AI-Native Applications

Ship Faster with Zero Infrastructure Complexity

HeliosDB Nano is a single-binary, embeddable database that gives you PostgreSQL compatibility, built-in vector search, and enterprise security - all without managing servers.

# Start building in seconds
cargo add heliosdb-nano

Why Developers Choose HeliosDB Nano

One Database, Every Workload

Traditional Stack	HeliosDB Nano
PostgreSQL + pgvector + Redis + S3	Single Binary
4+ services to manage	Zero infrastructure
Complex connection pooling	Embedded or Server mode
Separate vector DB subscription	Built-in HNSW + PQ

Built for Modern Development

PostgreSQL-Compatible: Use your existing SQL knowledge and tools
AI-Native: Vector search with HNSW and Product Quantization (8-16x compression)
SQLite-Simple: Embed directly in your application with zero network overhead
Enterprise-Ready: AES-256-GCM encryption, RBAC, multi-tenancy out of the box

Quick Start

REST API (5 Minutes)

# Start server
heliosdb-nano --mode server --port 6543

# Authenticate and query
curl -X POST http://localhost:6543/api/v1/query \
  -H "Authorization: Bearer YOUR_TOKEN" \
  -H "Content-Type: application/json" \
  -d '{"sql": "SELECT * FROM users LIMIT 10"}'

Embedded Mode (3 Lines of Code)

use heliosdb_nano::EmbeddedDatabase;

let db = EmbeddedDatabase::open("./my_app.db")?;
let results = db.execute("SELECT * FROM products WHERE category = 'AI'")?;

Schema Generation API (For AI Agents)

# Generate schema from your data samples
curl -X POST http://localhost:6543/api/v1/schema/infer \
  -H "Authorization: Bearer YOUR_TOKEN" \
  -H "Content-Type: application/json" \
  -d '{
    "samples": [
      {"id": 1, "name": "Widget", "price": 29.99, "embedding": [0.1, 0.2, 0.3]},
      {"id": 2, "name": "Gadget", "price": 49.99, "embedding": [0.4, 0.5, 0.6]}
    ],
    "table_name": "products"
  }'

Response:

{
  "success": true,
  "data": {
    "table_name": "products",
    "ddl": "CREATE TABLE products (\n    id INTEGER NOT NULL,\n    name VARCHAR(12) NOT NULL,\n    price NUMERIC NOT NULL,\n    embedding VECTOR(3) NOT NULL,\n    PRIMARY KEY (id)\n);",
    "confidence": 0.85
  }
}

Perfect For

AI/ML Applications

Semantic search with vector similarity
RAG (Retrieval-Augmented Generation) backends
Embedding storage with automatic compression
AI agent memory and context management

SaaS Platforms

Multi-tenant isolation with Row-Level Security
Per-tenant resource quotas and limits
Database branching for preview environments
Time-travel queries for audit trails

Edge & Embedded

Single binary deploys anywhere
In-process execution (no network latency)
Works offline with sync support
Mobile and IoT data persistence

Rapid Prototyping

No infrastructure setup required
Schema inference from JSON samples
Built-in REPL for exploration
Instant database branching

Key Capabilities

Feature	Description
Vector Search	HNSW indexing with Product Quantization
Time Travel	Query historical data with `AS OF TIMESTAMP`
Branching	Git-like database branching and merging
Encryption	AES-256-GCM with <3% performance overhead
Multi-Tenancy	RLS policies, quotas, isolation modes
Schema Inference	Auto-generate DDL from JSON samples

Pricing

Free Tier

100 MB storage
5 concurrent connections
10 queries/second
Full SQL support
Vector search included
Schema inference API
Perfect for development and prototyping

Starter - $29/month

1 GB storage
20 concurrent connections
100 queries/second
CDC event tracking
30-day time travel

Pro - $99/month

10 GB storage
100 concurrent connections
1,000 queries/second
Tenant migrations
Custom quotas
90-day time travel

Enterprise - Contact Us

Unlimited storage
Unlimited connections
All isolation modes
Priority support
SLA guarantees

Get Started

Resource	Description
Quick Start Guide	Set up HeliosDB in 5 minutes
Authentication	Bearer token setup
API Reference	Complete REST API documentation
Schema Generation	AI-friendly schema inference
Examples	Real-world use cases

Trusted By Developers

"Finally, a database that understands modern app development.
 Vector search + SQL + embedding in one package."

 - AI Startup Founder

"We replaced 4 services with HeliosDB Nano.
 Our deployment went from 20 minutes to 30 seconds."

 - DevOps Engineer

Resources

HeliosDB Nano v3.3.0 - Apache 2.0 License