Show HN: Alternative to Nvidia Auto-Ontology

Category: ai-ml

Tags: llm-agents, data-ontology, semantic-layer, dbt, data-governance

Score: 7.0/10 (Innovation: 7, Technical: 7, Documentation: 8, Utility: 6)

Cassis ontology-skills provides a multi-stage agentic workflow for bootstrapping and expanding a warehouse ontology from existing schema exports, dbt projects, semantic layers, and documentation. Its distinctive approach constrains the LLM to only write definitions traceable to source evidence, leaving unsupported columns blank and surfacing them as questions, with verification passes and human checkpoints to separate guesses from facts.

Target audience: data engineers, analytics engineers, data platform teams

Repository: https://github.com/GetCassis/ontology-skills · Python · MIT · 21 stars

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