Obsidian OpenCode

A plugin that embeds the OpenCode CLI directly into Obsidian. Manage your AI coding sessions, browse conversation history, and resume work without leaving your vault.

✨ Features

• Native OpenCode Execution: Runs the OpenCode CLI directly inside Obsidian using an integrated terminal, ensuring smooth performance for long coding sessions.
• Vault-Centric Workflow: Automatically spawns the agent in your vault's root, ensuring it has immediate access to your notes and project files.
• Drag and Drop Context: Drop files from Obsidian's file explorer directly into the terminal to insert them as @path/to/file.md#1 mentions for OpenCode.
• Session Manager:
  • History Browser: View a list of all your past OpenCode sessions with timestamps and working directories.
  • Conversation Preview: Inspect message history, token usage, model details, and costs before deciding to resume.
  • One-Click Restore: Instantly resume a previous session in the embedded terminal.
  • Export to Markdown: Save entire conversation threads as formatted notes in your vault for documentation or review.

🖥️ Platform Support

• Linux: stable on my daily driver, not tested on all distros.
• Windows: Beta support on Windows 10 version 1809 and later through ConPTY. Node.js must be available on PATH for the isolated PTY helper.
• macOS: Experimental.

🚀 Installation

From Obsidian Community Plugins (Recommended)

1. Open Obsidian and go to Settings → Community plugins
2. Click Browse and search for OpenCode
3. Click Install, then Enable

Manual Installation

1. Download main.js, manifest.json, and styles.css from the latest release
2. Create a folder named opencode in your vault's .obsidian/plugins/ directory
3. Copy the downloaded files into that folder
4. Reload Obsidian and enable the OpenCode plugin in Community Plugins settings

Usage

• Terminal: Use the command palette (Ctrl/Cmd + P) and select "OpenCode: Open Terminal" to launch the CLI.
• Sessions View: Use the command palette to select "OpenCode: Open Sessions" to browse, restore, or export past conversations.
• Settings: Configure your opencode binary path, default CLI arguments, and terminal styling preferences (font size/family) in the Obsidian settings under the "OpenCode" tab.

Development

To develop the plugin, you can run the development script which automatically rebuilds the plugin when files change:

npm run dev

Unit tests run with npm test. To create a fresh isolated vault and test the built plugin inside a sandboxed Obsidian instance, run:

npm run test:obsidian

Use npm run test:obsidian:smoke for the smaller baseline suite. Windows contributors can also run npm run test:obsidian:windows-ui to exercise the installed OpenCode CLI and native terminal interactions.

See Testing in Obsidian for setup, coverage, evidence, and limitations.

⚠️ Known Issues

• Session Previews / Loading: While the buffer size for exporting sessions has been increased (up to 100MB), exceptionally large or deeply complex OpenCode sessions with massive token counts may still occasionally fail to preview or load properly.

• Limited Linux support: While the plugin should work on major distros, it's only tested on manjaro, ubuntu, and fedora.

🙏 Acknowledgements

• Terminal integration approach inspired by polyipseity/obsidian-terminal — the Python PTY proxy with pty.fork() and 4-pipe stdio for resize control (FD 3).

📄 License

MIT License