Spacecake
FreeExplore Spacecake, the open-source terminal interface for Claude Code with task tracking, markdown planning, real-time cost monitoring, and WYSIWYG editing.
About Spacecake
spacecake is an open-source desktop application designed to provide a superior interface for Claude Code. It combines a Notion-style markdown editor with an integrated Ghostty terminal, bridging the gap between running terminal agents and editing documentation. The app features a real-time status bar to monitor context window usage and costs, a live task panel to track agent progress, and a WYSIWYG editor for spec-driven development. It allows users to write specs, create Mermaid diagrams, and define custom project rules via JSON to maintain coding conventions.
How to Use
Download the application for your specific platform (macOS or Linux). Once installed, use the integrated Ghostty terminal to run Claude Code and the markdown editor to visually manage your specs and plans. Monitor the task panel to see what the agent is working on and check the status bar for real-time cost tracking.
Key Features
- Notion-style markdown editor
- Integrated Ghostty terminal
- Real-time context window and usage cost tracking
- Live task monitoring panel
- WYSIWYG editing with rich code blocks
- Custom rule definitions via JSON
Use Cases
- Editing markdown documentation while running Claude Code agents
- Monitoring AI agent tasks and progress visually
- Explaining code architecture using integrated Mermaid diagrams
- Tracking API costs and context limits in real-time during development
Key Features
Pros & Cons
- Open-source and free to use (no software license cost)
- Integrates planning, coding, git, and cost tracking in one interface
- Supports markdown with visual features like diagrams and checklists
- Cross-platform availability (macOS, Windows, Linux)
- Real-time cost visibility helps manage Claude API spending
- Requires Claude Code and a valid Anthropic API key/account to use the terminal features
- Still in public alpha, so stability and completeness may vary
- Primarily designed for terminal-oriented developers; may have a learning curve for non-CLI users
- Free tier limits for Claude Code usage (API costs) are not managed by Spacecake and should be verified with Anthropic
- Open-source project; support and updates depend on community and maintainers
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