Use Cases

markjason is built for specific workflows. Here's where it shines.

AI Coding Workflows

Using Claude Code, Cursor, Codex, or other AI coding assistants? markjason's live file sync and instant startup make it the perfect companion.

Edit AI agent instructions with instant preview, token counting, and visual hierarchy. The fastest way to tune your agents.

Reading documentation — Double-click any README.md and have it rendered instantly
Editing configs — JSON files with real-time validation and collapsible tree view
Managing secrets — .env files with one-click copy for keys and values
Reviewing agent output — Watch files update in real-time as AI writes
Sharing specs — Copy rendered markdown as images for non-technical colleagues
Prompt engineering — Token counting tells you exactly how long your prompts are

vs VS Code 0.3s launch vs 3-5s vs Obsidian No vault required

Download markjason

Free. Native macOS. ~100MB RAM.