Voiden
Design, test, and document APIs in plain Markdown with reusable blocks. Works entirely offline with no cloud dependency or vendor lock-in.

Voiden.md is an offline-first, Git-native API workspace that unifies API specs, documentation, tests, and mocks using programmable Markdown blocks. Built for developers who treat API work like code.
Key Features
- Git-Native Workflow: Store API specs, tests, and docs in
.voidfiles committed directly to your Git repository - Executable Markdown: Combine requests, documentation, and context in a single plain-text file that executes in place
- Reusable Blocks: Decompose API requests into composable components (endpoints, headers, auth, params) for reuse across files
- Offline-First: Works entirely locally with no cloud dependency, no accounts, and no telemetry
- CI/CD Integration: Run API tests headlessly in pipelines using
@voiden/runnerwith deterministic exit codes - No Vendor Lock-in: Pure Markdown format with Git as the storage layer, ensuring full portability
- Cross-Platform: Available as a desktop app with plugins and a CLI runner for terminal environments
- Developer-Friendly: Built by developers for developers who value version control, privacy, and ownership
Tech / Self-Hosting
Voiden.md is open-source software that runs entirely on your local machine. The desktop application is available for Windows, macOS, and Linux, while the @voiden/runner CLI can be deployed in any Node.js environment including CI/CD pipelines. No server infrastructure is required as all data remains local to your device.