# How to Vibe Code Your Own Obsidian (and Stop Paying for It) > Sharpen your thinking. - Site: https://obsidian.md - Category: Productivity / Knowledge Management - Platforms: macOS app, Windows app, Linux app, iOS app, Android app - Verdict: **Serious undertaking** (42/100 vibecodeable) - Estimated effort: 3-5 months of serious part-time work ## Verdict Build a desktop subset or keep paying for the real app, because replicating Obsidian's multi-platform Electron architecture, CodeMirror live-preview engine, and zero-knowledge sync is a serious multi-month engineering marathon. Replicating Obsidian as a solo developer means building a full desktop and mobile wrapper around a custom text editor engine while implementing reliable file system watchers and parsing complex Markdown graphs. While a web-based local-first clone using Tauri and CodeMirror is approachable, achieving the snappy performance, plugin sandbox, and encrypted sync of the real application requires months of unglamorous low-level debugging across file systems and view states. ### What you can't replicate - The massive library of 1,000+ community-maintained plugins and themes - The exact multi-year polish of their CodeMirror live-preview text editor implementation - The institutional trust and security audit history (Cure53, Trail of Bits) backing their zero-knowledge sync ## What it does Obsidian is a powerful, local-first personal knowledge base and note-taking application that operates on local plain-text Markdown files with bi-directional linking, a graph view, and an extensible plugin ecosystem. ### Core features - Local Markdown file system access and indexing - Live Preview editor with CodeMirror customization and inline Markdown parsing - Bi-directional linking (`[[Wiki-links]]`) and automatic backlink detection - Force-directed interactive graph view of note relationships - Canvas infinite spatial workspace for visual brainstorming - Extensible plugin API and theme engine - Cross-platform client wrappers (Desktop Electron + Mobile native) ## The business ### Pricing - Personal / Internal Business: Free - Obsidian Sync: $5 / mo — Billed monthly ($4/mo billed annually) - Obsidian Publish: $10 / mo — Billed monthly per site ($8/mo billed annually) - Commercial License: $50 / user / yr ### Funding $0 raised. Founded 2020. Team size: 7-9 full-time employees. ## The hard parts - Cross-platform file system performance when indexing and watching tens of thousands of local Markdown files without UI stutter - Building a seamless Live Preview editor mode that toggles between raw syntax and rendered DOM nodes cleanly inside CodeMirror - Zero-knowledge end-to-end client-side encryption (AES-256) for sync infrastructure - Force-directed graph physics engine performing smoothly on mobile devices with thousands of interconnected nodes ## How to vibe code Obsidian ### Prerequisites - Node.js (Free): Required for running the TypeScript build toolchain and Electron/Tauri development environment. - GitHub (Free): Source code repository hosting and CI/CD version control. - macOS / Windows PC (Free): Required desktop environment to build, bundle, and test cross-platform Electron applications. ### Recommended AI tools - Claude Code: The best terminal coding agent for scaffolding multi-file desktop apps, writing complex file-system parsers, and debugging build loops. - Cursor: An AI-native code editor ideal for iterative UI polish, tweaking CSS themes, and reviewing component diffs. ### Stack - Frontend: Electron + React + CodeMirror 6 + Tailwind CSS - Backend: Node.js (Local IPC / File System module) - Database: Local SQLite (via libSQL/better-sqlite3 for metadata indexing) + Plain text Markdown files - Auth: None (local-first, no account required) - Payments: None (personal use clone) - Other: D3.js (for the interactive graph view), Unified / Remark (for Markdown parsing and backlink extraction) ### Hosting - Cloudflare (Optional static landing page or update distribution server): $0/mo ### Build guide 1. **Scaffold Electron Desktop Shell & Local File System Bridge** — Initialize a cross-platform desktop application shell using Electron and TypeScript, establishing secure IPC bridges to read, write, and watch local directories containing Markdown files. ``` Scaffold a cross-platform Electron desktop application using TypeScript, Vite, and React. Create a main process that exposes secure IPC handlers (`window.electronAPI`) for reading directory contents, loading file trees recursively, reading plain text Markdown files, and saving files back to disk. Implement a local file system watcher using Chokidar or Node's `fs.watch` that notifies the renderer process whenever external changes occur in the active vault directory. Ensure proper error handling for missing permissions, locked files, and large directories. Set up a clean Tailwind CSS layout with a collapsible left sidebar, main editing pane, and right inspector panel. ``` 2. **Implement CodeMirror 6 Editor & Markdown Parser** — Integrate CodeMirror 6 as the core text editing engine with custom extensions for live preview syntax toggling, headings, lists, and inline formatting. ``` Integrate CodeMirror 6 into the React frontend as the main note editor. Configure syntax highlighting for Markdown, line numbers, autocompletion, and keybindings (including optional Vim mode). Build a custom CodeMirror view plugin or decorator that implements 'Live Preview' behavior: when the cursor is outside a Markdown formatting token (like `**bold**`, `# heading`, or `[[link]]`), render the styled DOM element inline while keeping the raw syntax accessible when editing. Add keyboard shortcuts for toggling bold, italic, lists, and headers. ``` 3. **Build Bi-Directional Linking & Wiki-Links Engine** — Parse `[[Wiki-links]]` across all vault files, construct an in-memory index of forward links and backlinks, and build an autocomplete popup for link creation. ``` Create a background indexing service in the frontend/main process that scans all Markdown files in the active vault upon startup and on file changes. Parse out all `[[Wiki-links]]` and `#tags` using regular expressions or an AST parser. Build an in-memory graph index mapping every note to its outgoing links and incoming backlinks. Implement an autocomplete dropdown that triggers when the user types `[[` inside CodeMirror, showing a searchable list of matching note titles from the vault. Clicking a suggestion inserts the link and updates the backlist inspector panel for the currently viewed note. ``` 4. **Develop Interactive Force-Directed Graph View** — Build an interactive D3.js or HTML5 canvas graph visualization that renders notes as nodes and bi-directional links as edges. ``` Build a dedicated Graph View panel using D3.js force simulation (or HTML5 Canvas for performance). Transform the in-memory note and backlink index into a node-edge graph structure. Render notes as interactive circular nodes and links as connecting lines, with node sizing scaled by backlink count. Support pan, zoom, hover tooltips displaying note titles, and click-to-navigate functionality that opens the selected note in the editor pane. Include basic filter controls to filter by tags or search queries. ``` 5. **Create Canvas Spatial Workspace** — Implement an infinite spatial canvas workspace allowing users to place note cards, media, and spatial connections freely. ``` Build an infinite spatial Canvas workspace view where users can pan and zoom across a 2D plane. Allow users to create card nodes (linked to local Markdown notes or containing freeform text), color them, resize them, and draw connecting directional arrows between cards. Store canvas layouts in a JSON file alongside the vault. Implement smooth drag-and-drop mechanics, multi-selection bounding boxes, and zoom-to-fit controls. ``` 6. **Add Plugin Extension API & Settings UI** — Design a sandboxed plugin architecture allowing community JavaScript/TypeScript scripts to register UI extensions, commands, and workspace views. ``` Design and implement a local plugin extension architecture for the desktop app. Create a plugin manifest reader that scans a `.obsidian/plugins` directory in the vault. Provide a safe API (`window.obsidianAPI` or similar context) exposed to plugins that allows them to register custom status bar items, editor commands, ribbon icons, and sidebar views. Build a searchable Settings modal that lists core and community plugins with toggles to enable or disable them instantly without restarting the app. ``` ### Cost vs paying **Starting costs (one-time):** - Total: $0 one-time **Ongoing costs (monthly):** - Local execution / No cloud hosting required: $0/mo - Total: $0/mo - Paying for the SaaS instead: $5 - $15/mo (Sync/Publish add-ons) - Build time: 60 - 90 hours - AI tool credits: $20/mo (Claude Pro / Cursor Pro) - Break-even: N/A (Obsidian local app is free) ## Sources - [Obsidian Official Website](https://obsidian.md) - [Obsidian Pricing Page](https://obsidian.md/pricing) - [Obsidian Security & Audits](https://obsidian.md/security)