helix-db
HelixDB is an OLTP graph-vector database built in Rust on Object Storage.
The helix-db MCP server connects AI agents to HelixDB, a graph-vector database built in Rust for knowledge graphs and AI memory. It enables agents to store and query multi-modal data—including graphs, vectors, key-value pairs, documents, and relational structures—through a unified platform. Developers use the MCP server to give their AI assistants persistent memory and federated access to company data without juggling separate vector, graph, and application databases. The server is installed via the Helix CLI's interactive 'helix chef' command, which bootstraps projects and integrates with Claude Code, OpenAI Codex, OpenCode, and Cursor Agent.
Key Features
Use Cases
- 01Providing AI agents with long-term memory and knowledge graph storage across conversations
- 02Building RAG (retrieval-augmented generation) applications with unified vector and graph retrieval
- 03Creating company-wide AI brains with federated access to structured and unstructured data
- 04Developing AI-powered applications that require graph relationships, vector similarity, and relational queries
- 05Prototyping AI agent features locally with instant query feedback and no deployment overhead
- 06Replacing fragmented storage architectures (separate vector DB, graph DB, app DB) with a single platform
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helix-db — FAQ
What is the helix-db MCP server?+
The helix-db MCP server provides AI agents with access to HelixDB, a graph-vector database that combines knowledge graphs, vector search, and traditional data models in one platform. It's designed specifically for AI memory, RAG pipelines, and intelligent applications.
How do I install the helix-db MCP server?+
Install the Helix CLI using 'curl -sSL https://install.helix-db.com | bash' on macOS/Linux or the PowerShell script on Windows, then run 'helix chef' to interactively install the MCP server, scaffold a project, and start a local instance. The command detects and configures supported AI agents automatically.
Which AI clients work with helix-db?+
The helix chef installer detects and integrates with Claude Code, OpenAI Codex, OpenCode, and Cursor Agent. The MCP server can work with any client that supports the Model Context Protocol.
Do I need API keys or cloud credentials to use helix-db locally?+
No API keys are required for local development. The 'helix start dev' command runs a standalone instance on localhost:6969. Cloud deployment requires authentication via 'helix auth login' and a workspace/project configuration.
Is the helix-db MCP server free to use?+
The CLI, local database instances, and SDKs are open source and free for local development. HelixDB Cloud is a separate managed service with its own pricing; contact the team or visit their website for commercial support options.
What programming languages can I use to query HelixDB?+
HelixDB provides SDKs for Rust, TypeScript (Node.js 20+), Python, and Go, all using a consistent query DSL. Queries are sent as JSON to the /v2/query HTTP endpoint, so any language with HTTP support can interact with the database.
How do I install helix-db?+
Open the source repository on GitHub and follow its README. helix-db is a mcp server — MCP Agents Market links you directly to the official repo.
Is helix-db free?+
helix-db is an open-source project hosted on GitHub. Check the repository for its license and any usage requirements.