Somewhere along the way, API tooling lost the plot.
One tool for specs. Another for tests. A third for docs. Then a parade of SDKs, mocks, CI scripts, and shiny portals nobody asked for.
We got fed up, and from that frustration, Voiden was born.
Voiden keeps your specs, tests, and docs in one place. Use Markdown. Commit with Git. Extend with your own plugins. No account. No lock-in. No syncing, tabbing, or jumping between tools.
Voiden is a Git-native, offline-first workspace that lets you design, test and document APIs in a single Markdown file.
- for
- Developers who version-control APIs and prefer local, no-account tools
- pricing
- free
- license
- Apache-2.0
- v2.3.1-b12 days ago
- v2.3.1Voiden v2.3.112 days ago
- runner-v2.3.0voiden-runner runner-v2.3.015 days ago
works withNode.jsGitHub ActionsGitLab CIClaudeCodex
Key features
6 features of Voiden
- Executable API Docs — Run API requests directly inside Markdown alongside documentation.
- LEGO-style HTTP Blocks — Compose requests from reusable endpoint, header, auth, and param blocks.
- Multi-Protocol Support — Handle REST, WebSocket, gRPC and GraphQL in one workspace.
- MCP Integration — Expose requests as AI-agent callable tools via built-in MCP support.
- Pre & Post Request Scripts — Run JavaScript, Python or Shell scripts before and after requests.
- OpenAPI & Postman Import — Import existing OpenAPI specs or Postman collections to generate .void files.
Use cases
- Version-controlled API specs that can be reviewed via Git diffs
- CI pipelines that run API tests headlessly with voiden-runner
- AI agents generating or invoking API calls through MCP tooling
Voiden vs alternatives
 Voiden |  Bruno |  Insomnia | |
|---|---|---|---|
| Best for | Git-native API design, testing and docs | Offline, Git-friendly API client | Open-source API client with multi-protocol support |
| Pricing | Free | Free | Free |
| DevHunt upvotes | 1 | 0 | 0 |
| Launched | May 2026 | — | — |
- Voiden vs Bruno: Bruno is also offline-first and Git-friendly but focuses on a UI client; Voiden adds built-in AI-agent (MCP) support and executable Markdown docs.
- Voiden vs Insomnia: Insomnia supports REST, GraphQL and gRPC but stores collections in its own format; Voiden stores everything as plain Markdown in Git.
Voiden FAQ
Why not just use curl or Postman?+
Voiden combines specs, tests and docs in one Git-native Markdown file, avoiding multiple tools and vendor lock-in.
Where does my data live?+
All files are stored in your repository; there is no cloud sync or external storage.
How does collaboration work?+
Since files are plain text in Git, standard Git workflows (branches, PRs, reviews) handle collaboration.
Does Voiden support large specs like OpenAPI?+
Yes, it can import OpenAPI schemas and generate .void files automatically.
Can Voiden turn API requests into MCP tools?+
Yes, you can mark requests as tools and serve them via the built-in @voiden/mcp plugin.
Summarized by DevHunt from voiden.md · Oct 1, 2026. Details may change; check the official site.
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