chDB is an in-process OLAP SQL Engine 🚀 powered by ClickHouse
chDB is an in-process OLAP SQL engine powered by ClickHouse, allowing applications to query analytical data without running a separate database server. Python users and data practitioners use it to work with formats such as Parquet, CSV, JSON, Arrow, and ORC through SQL or a pandas-compatible API. Its catalogue add-ons provide agent instructions, rules, skills, and an agent for working with the project.
Latest release v4.4.0 · 11 Sept 2026
3 files for Codex, OpenCode and Claude Code: chdb AGENTS.md, pr-description, chdb CLAUDE.md — 260 tokens loaded in every session.
AGENTS.md A 257 tok CLAUDE.md A 3 tok .agents/skills/pr-description/SKILL.md A 29 tok These files are chdb-io/chdb's own configuration — they tell Codex, OpenCode and Claude Code how to work on this repository, so they are not mods to install elsewhere. Copy one as a starting point and replace the parts that are about this project.