AI Developer Tools

Polygres

Polygres combines PostgreSQL hosting with native graph traversal, HNSW vector search, and hybrid retrieval APIs for AI agent workflows.

What is Polygres?

Polygres is an all-in-one database platform that combines PostgreSQL with native graph traversal, HNSW vector search, and hybrid retrieval APIs, designed for AI agent workflows.

Polygres vs Similar AI Tools

Pricing ModelFree, FreemiumFreeCustom PricingFree, Paid
Free Credits
Key Features
  • Full PostgreSQL 17 instance with ACID compliance
  • Native graph traversal via pgGraph
  • HNSW vector search with scalar filtering via pgVector
  • GitHub Pages hosting
  • Jekyll integration
  • Markdown content support
  • Workload monitoring and anomaly detection
  • Slow query identification and optimization
  • Natural language querying to SQL translation
  • Scans skills and MCP servers against ATR rules before loading
  • Real-time runtime protection against prompt injection and hijacks
  • Signed audit-ready evidence for compliance (EU AI Act, NYDFS, DORA)
Pros
  • Combines relational, graph, and vector capabilities in one database
  • Open source core components (PostgreSQL, pgGraph, pgVector)
  • Free hosting with custom domain support
  • Easy setup via Git
  • Quick one-line installation and setup in 15 minutes
  • Self-hosted ensures data stays within your infrastructure
  • Open source with MIT license
  • Real-time detection and prevention
Cons
  • Relatively new platform with limited community support
  • Requires learning pgGraph syntax for graph traversal
  • Limited to static content
  • No server-side processing
  • Requires self-hosting and VPC setup
  • No free tier or trial mentioned
  • Enterprise features require paid tiers
  • Setup may require technical expertise
Best For
  • AI agents needing structured, relational, and semantic data
  • Developers building knowledge graphs with vector search
  • Developers
  • Open source projects
  • Database administrators
  • Data engineers
  • Developers building and deploying AI agents
  • Enterprises needing audit-ready AI security

How to use Polygres?

  1. 1Create an account at polygres.com.
  2. 2Deploy a managed PostgreSQL instance with pgGraph and pgVector.
  3. 3Connect using any Postgres-compatible client, Python SDK, or REST API.
  4. 4Write queries combining SQL, graph traversals, and vector similarity search.

Polygres Key Features

  • Full PostgreSQL 17 instance with ACID compliance
  • Native graph traversal via pgGraph
  • HNSW vector search with scalar filtering via pgVector
  • Hybrid search combining relational, graph, and vector queries
  • Managed cloud with Kubernetes and Docker support
  • Python SDK and REST API for agent workflows

Polygres Use Cases

  • AI agent data storage and retrieval
  • Building knowledge graphs with semantic meaning
  • Hybrid search for RAG (Retrieval-Augmented Generation)
  • Storing and querying embeddings at scale

Polygres Pricing & Free Credits

Polygres currently operates on a Free, Freemium model.

Free TierFree Credits

Free Tier

Free

Get started with free credits to deploy a small database.

Paid Plans

Managed Cloud

Contact for Pricing

Scalable cloud hosting with personalized support.

Free Tier

Free

Get started with free credits to deploy a small database.

Managed Cloud

Contact for Pricing

Scalable cloud hosting with personalized support.

Polygres Pros & Cons

Pros

  • Combines relational, graph, and vector capabilities in one database
  • Open source core components (PostgreSQL, pgGraph, pgVector)
  • ACID compliant and battle-tested
  • Easy integration with existing Postgres tools and ORMs

Cons

  • Relatively new platform with limited community support
  • Requires learning pgGraph syntax for graph traversal
  • No built-in GUI for schema design

What is Polygres best for?

  • AI agents needing structured, relational, and semantic data
  • Developers building knowledge graphs with vector search
  • Teams looking for a unified database for hybrid retrieval

Polygres FAQ

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