CoreBunch/Instatic

The open-source alternative to Webflow, Framer and WordPress. Agentic self-hosted visual CMS outputting clean static pages. Users, roles, plugins, content, database, it's all there.

About the project

Instatic is a self-hosted content management system with a visual editor, content tools, and publishing in one Bun server, producing static HTML and CSS pages. It is used to build and manage websites such as blogs, portfolios, and small-business sites.

Latest release v0.0.21 — Instatic 0.0.21 · 12 Oct 2026

5 files for Claude Code, Codex and OpenCode: agent-browser, instatic-user-e2e, skill-creator, Instatic AGENTS.md and 1 more — 8,802 tokens loaded in every session.

Open on GitHub instatic.com

▶ Instatic + Claude Code: A New Open Source CMS Jeffrey @ Lytbox · about CoreBunch/Instatic · on YouTube →

Instructions

Instatic AGENTS.md AGENTS.md A 4 tok
Instatic CLAUDE.md CLAUDE.md A 8,798 tok

Skills

agent-browser .agents/skills/agent-browser/SKILL.md A 108 tok
instatic-user-e2e .agents/skills/instatic-user-e2e/SKILL.md A 83 tok
skill-creator .agents/skills/skill-creator/SKILL.md A 46 tok

These files are CoreBunch/Instatic's own configuration — they tell Claude Code, Codex and OpenCode 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.