Documentation

Everything you need to run ChengYoung — local-first, offline-friendly.

Getting started

Quick StartFrom download to your first conversation — up and running in five minutes. Install & updateInstall ChengYoung, verify the installer, and stay up to date with in-app updates.

Core features

Local models & providersBuilt-in local inference (fully offline) or bring your own cloud provider — keys stay in the OS keychain. WorkflowsPackage instructions, parameters, and settings into reusable, shareable one-click workflows. Extensions (MCP)Give the agent new tools with extensions — built-ins work out of the box, third-party MCP servers install only with your explicit consent. SkillsTeach the agent domain know-how with skills — from simple checklists to full professional procedures, loaded on demand. SchedulesHand workflows to a timer — run automatically on your machine by cron rules, with no server in the loop.

Safety & privacy

Permissions & safetyTool calls are Allow / Ask / Deny — your call. Browser capabilities are authorized per domain; sensitive fields are always refused. Privacy & dataZero usage data collection; everything stays on your machine; the three network scenarios, spelled out.

Help

FAQModel downloads, GPU, failed updates, full offline use — the eight questions we hear most.