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HelixDB

Graph-vector database for AI

HelixDB is an open-source graph-vector database that brings structure to unstructured data for RAG and AI applications, combining vector meaning with graph relationships.

Founders
George Curtis, Xavier Cochran
YC batch
P25
Website ↗Y Combinator ↗

Company posts

Summaries from the company’s own website.

  • How We Used PlanetScale MCP to Cut Query Latency ↗

    HelixDB says it used PlanetScale Insights and the PlanetScale MCP server to identify an expensive cursor scan in its control-plane queries, trace it to two backend workers, and test fixes against live schema and metrics. The company says a smaller predicate rewrite let MySQL and Vitess use the existing composite index, reducing wasted database work and lowering query latency percentiles.

  • Introducing HelixDB Query Insights ↗

    HelixDB says it launched Query Insights in HelixDB Cloud to help users understand why queries are slow by combining latency graphs, planner findings, index information, and recommendations in one view. The post also says these insights are available in the dashboard and through its MCP server for agent-based troubleshooting.

“Having someone to tell you when you’re wrong or being stupid whilst providing support and ideas is a superpower when trying to build a company; Jeremy is just that. He goes above and beyond to understand not just your company but who you are as founders and as people.”

Xavier CochranCTO & Co-Founder at HelixDB

“Jeremy is the most founder-focused investor I've met. He's been our go-to advisor, always ready to listen and offer support even during what feels like the dullest of times. I consistently leave our conversations feeling uplifted. His insights are always useful, and it's evident he's as concerned about their outcomes as we are. Jeremy is THE first person I'd want on any cap table.”

George CurtisFounder at HelixDB

“During the investment process, Jeremy was open about his thoughts and made a swift decision, meeting the deadline he provided himself.”

George CurtisFounder at HelixDB

“Outside of us, Jeremy consistently bets on founders whom I personally hold in high regard. He seems capable of judging character exceptionally well in an obviously restricted amount of time.”

George CurtisFounder at HelixDB