Omnigraph
Omnigraph is Modern Relay's MIT-licensed, Rust graph database for AI agents: the graph lives as open Lance files in S3 or local storage, agents write on reviewable branches, every write is schema-checked, and one query mixes graph traversal with vector and keyword search. Free; managed Cloud in preview.
About Omnigraph
Omnigraph: a graph database for AI agents
An MIT-licensed, object-storage native graph database from Modern Relay. Agents work with graph data the way engineers work with code: branched, typed, reviewed, merged and audited.
Key capabilities
- Typed schema: one shared model of the domain; malformed writes are rejected.
- Branches: a branch per agent or task, diffs, three-way merge and time travel; nothing reaches main without review.
- Hybrid search: graph traversal, vector, BM25 and RRF ranking in a single query, suited to GraphRAG.
- Object storage: the graph, branches and commits stored as open Lance tables in S3-compatible storage, Azure Blob (preview) or local disk; stateless servers.
- Policy and config as code: Cedar policies enforced in-engine; Terraform-style plan and apply for schemas, queries and permissions.
Clients and tools
CLI (install script or Homebrew), TypeScript SDK (@modernrelay/omnigraph), Python SDK (omnigraph), an MCP endpoint in omnigraph-server, the Omnigraph Studio desktop app, and runnable cookbooks such as Company brain and Second brain.
Deploy and pricing
Embedded, bring-your-own-cloud (AWS, Azure, GCP), on-premises or Omnigraph Cloud. The engine is free and open source; Cloud is free during its private preview.
Value & Audience
Value Proposition
Give many AI agents one shared, typed, versioned knowledge graph they can write to safely, with every change reviewable before merge and the data kept as open files in storage you own.
Problem Solved
Multiple agents writing shared knowledge collide and drift, and teams otherwise have to stitch together separate graph and vector stores with no review, schema enforcement or audit trail.
Target Audience
Tech Stack
Frontend
Database
Social & Links
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Feedback & Roadmap
Omnigraph FAQ
Common questions about Omnigraph's features, pricing, and use cases
Is Omnigraph free to use?
Yes. Omnigraph is open source and free to use.
What are some alternatives to Omnigraph?
Popular Database & Storage alternatives to Omnigraph include Sandra, PlanetScale and Truvem.
Omnigraph appears in
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